descrie what would happen in the follopwing situations. in the reaction h2so4 (aq) h hso4 the ph has been increased

Answers

Answer 1

The pH will decrease and goes in acidic sense in the following situations i.e. in the reaction of H2SO4 (aq) + HSO4.

Chemistry uses a scale known as pH, which formerly stood for "potential of hydrogen" (or "power of hydrogen"), to express how acidic or basic an aqueous solution is. Acidic solutions (solutions with higher H+ ion concentrations) have lower pH values than basic or alkaline solutions. The pH scale, which is logarithmic, exhibits an inverse relationship with the concentration of hydrogen ions in the solution. To trace the pH scale, a group of standard solutions whose pH has been established by international agreement can be employed. The potential difference between a hydrogen electrode and a standard electrode, such as the silver chloride electrode, is measured using a concentration cell with transference to obtain the primary pH standard values. The pH of aqueous solutions can be measured using a glass electrode, a pH meter, or a color-changing indicator. pH measurements are important in many fields, including chemistry, agronomy, medicine, water treatment, and many more.

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Related Questions

The preparations of two aqueous solutions are described in the table below. For each solution, write the chemical formulas of the major species present at equilibrium. You can leave out water itself Write the chemical formulas of the species that will act as acids in the 'acids' row, the formulas of the species that will act as bases in the 'bases' row, and the formulas of the species that will act as neither acids nor bases in the 'other' row You will find it useful to keep in mind that NH3 is a weak base. acids ,口, 1.3 mol of HNO3 is added to 1.0 L of a 1.3 MNH, solution bases: other acids: bases: - 0.57 mol of KOH is added to 1.0 L of a solution that is 1.2 M in both NH3 and NH4CI. other:

Answers

a) NaFi is formed when 1 mol of NaOH is oriented to 1.0 L of a 0.5 M HF mixture.

b) To 1.0 L of a solution that is 0.8 M in both HF & KF-producing KF, 0.3 mol of KOH is added.

An acid generates the hydronium ions H3O+ in an aqueous solution, whereas a base creates the hydroxide ions OH. Water and salt are the byproducts of the neutralization process that occurs when an acid and a base interact.

A) 1 mol of NaOH is counted to 1.0 L of a 0.5 M HF resolution.

The reaction involved in this is:

NaOH + HF → NaF + H2O

acid: HF

base: NaOH

species that neither creates an acid and neither a base nor a salt NaF

b) To 1.0 L of a mixture that seems to be 0.8 M in both HF as well as KF, 0.3 mol of KOH is added.

The reaction involved in this is:

KOH + HF → KF + H2O

acid: HF

base: KOH

the mixture that could be neither an acid nor a base or salt delivered: KF

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The question is -

The preparations of two aqueous solutions are described below. For each solution, write the chemical formulas of the major species present at equilibrium. You can leave out water itself.

For each of the questions, write the chemical formulas of the species that will act as acids, the formulas of the species that will act as bases, and the formulas of the species that will act as neither acids nor bases. Note that HF is a weak acid.

A) 1 mol of NaOH is added to 1.0 L of a 0.5 M HF solution.

B) 0.3 mol of KOH is added to 1.0 L of a solution that is 0.8 M in both HF and KF.

zones in lakes and oceans are delineated by depth, distance from shore, or light penetration. different zones have different physical and chemical characteristics, such as temperature and salinity. label the diagrams of zonation in lakes and oceans. drag the labels to their correct targets on the diagrams below.

Answers

The diagrams of zonation in lakes and oceans with correct targets are :

a) fresh plant may be rooted here

b) littoral zone

c) limnetic zone

d) alternately dry and submerged

e) extends to edge of the continental shelf

f) generally low nutrient levels

g) light penetrates here

h) no photosynthesis occurs here

i) benthic zone

There are zones which divided the lakes. they are separated by the water from the top to bottom and the side to the side. that is named as : the littoral zone , the limnetic zone, the profundal zone , the benthic zone and the euphotic zone . the waters temperature will be affected the density. there are several zones in the ponds and the lakes. these are dived by the water column.

The limnology divides the lakes in the three types of zones ., that is the limnetic zone, the littoral zone and the benthic zone.

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Correct the volume of 2.90 L of a gas at –12 °C to the volume occupied at 25 °C. Remember to convert between °C and K.

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The volume occupied at 25 °C. Remember to convert between °C and K. V2 = 3.311 L is the correct answer.

What is volume?

Volume is the measure of the amount of space occupied by an object or a substance. It is measured in three dimensions: length, width, and height. In the International System of Units (SI), it is measured in cubic meters (m3). Volume is also commonly measured in liters (L), gallons (gal), or cubic feet (ft3). Volume can also refer to the amount of a substance or object, such as the volume of a gas or the volume of a liquid.

Temperature and Volume equation

Given,

The volume at -12°C = 2.90L

Temperature, T1 = -12°C

= (-12°C + 273)

= 261K

And, Volume at 25°C = ?

(25°C + 273)K

= 298K

Now, by using this equation:-

V1/T1 = V2/T2

V2 = V1 x T2/T1

V2 = 2.90L x 298K/261K

V2 = 3.311L

Hence, The volume at  25°C will be 3.311L

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cold water can hold more dissolved oxygen than warm water because the solubility of oxygen decreases as temperature increases. T/F

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The solubility of oxygen reduces with increasing temperature, hence cold water can store more dissolved oxygen than warm water. The chemical element with the letters O.

And the atomic number 8 is called oxygen. It belongs to the chalcogen group of the periodic table and is a highly reactive nonmetal that rapidly forms oxides with most elements as well as with other compounds. Understanding the makeup of matter developed together with the creation of the concepts of the elements. The substance has been viewed as either continuous or discontinuous at various points throughout history. It is possible to hypothesise that continuous substance is homogenous, infinitely divisible, and has parts that are all the same size.

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a chemistry graduate student is given of a chloroacetic acid solution. chloroacetic acid is a weak acid with . what mass of should the student dissolve in the solution to turn it into a buffer with ph ? you may assume that the volume of the solution doesn't change when the is dissolved in it. be sure your answer has a unit symbol, and round it to significant digits.

Answers

Choloracetic acid, 12 g. The colorless solution of the white crystalline substance known as chloroacetic acid.

Up to 80% of the solution can be acidic. By inhalation, ingestion, and skin contact, it is poisonous. It corrodes flesh and metals.

The equilibrium of the buffer is

CH2ClCO2 + H+ HCH2ClCO2

PKA = Log Ka

Ka: [CH2ClCO2] = 1,3 x 103. "H+" / "HCH2ClCO2"

Using the Henderson-Hasselbalch formula:

pH equals pka plus log10 [A]/[HA].

2,89 + log10 [A] / [HA] = 3,01

1,318 = [A⁻] / [HA]

Since chloroacetic acid (HA) has a molar concentration of 0,20M

[A⁻] = 0,26 mol/L

There are 500 mL plus 0.5 L.

Chloroacetic acid is equal to 0,26 mol/L x 0,5 l, or 0,13 moles. By weight:

Choloracetic acid is equal to 0,13 mol (94,5g / 1mol) = 12 g.

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this method of acquiring mw differs from sec and gives dosy nmr many advantages over sec. as stated before, molecules of specific sizes produce indi-vidual diffusion coefficients. due to low sample con-centration, the purity of polymer is not as essential compared to sec; thus, reducing preparation time. dosy also requires minimum amounts of solvent

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A well-known NMR technique called diffusion ordered spectroscopy (DOSY) provides diffusion coefficients for specific resonances in NMR spectra.

The main applications of DOSY are the analysis of small molecule mixtures and the oligomeric state of biomolecules. The spreading Self-Diffusion (SD)-NMR and diffusion ordered spectroscopy are two common names for the NMR technology (DOSY). This is accomplished by fusing magnetic field gradients, which encode spatial information, with radio-frequency pulses, which are commonly employed in NMR spectroscopy. Magnetic field gradients are used by Diffusion Ordered Spectroscopy (DOSY) to examine diffusion processes in both solid and liquid materials. Liquid structure is discovered using NMR spectroscopy. It is also used to figure out how soluble chemical molecules are structured.

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Suppose the galvanic cell sketched below is powered by the following reaction: Fe(s)+NiCl2(aq) → FeCl2(aq)+Ni(s) E2 S1 S2 Write a balanced equation for the half-reaction that happens at the cathode of this cell. Write a balanced equation for the half-reaction that happens at the anode of this cell. Of what substance is E1 made? of what substance is E2 made? What are the chemical species in solution S1? What are the chemical species in solution S2?

Answers

The chemical species in solution S2 Fe(s)+NiCl2(aq) → FeCl2(aq)+Ni(s)

Fe(s) ------> [tex]Fe^{2+}[/tex] + 2e                              (Oxidation)

[tex]Ni^{2+}[/tex] (aq) + 2e ------> Ni(s)                        (Reduction)

Galvanic Cell

Galvanic cells employ the electrical energy generated by the transport of electrons during a redox reaction to carry out practical electrical work. By separating the oxidation and reduction half-reactions and connecting them with a wire so that the electrons must pass through the wire, it is possible to gather the electron flow.

Write a balanced equation for the half-reaction that happens at the cathode of this cell = Ni (aq) + 2e ------> Ni(s)

Write a balanced equation for the half-reaction that happens at the anode of this cell = Fe(s) ------> [tex]Fe^{2+}[/tex] + 2e.

Of what substance is E1 made? = Fe

of what substance is E2 made? = Ni

What are the chemical species in solution S1? = [tex]Fe^{2+}[/tex]

What are the chemical species in solution S2? = [tex]Ni^{2+}[/tex]

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The Solubility Of Fe (OH)2 In Water At 25 °C Is Measured To Be 5.2x 10-4 Fe(OH)2 Use This Information To Calculate K Round Your Answer To 2 Significant Digits.

Answers

The Solubility Of Fe(OH)₂ In Water At 25 °C Is Measured To Be 5.2x 10⁻⁴ Fe(OH)₂ Ksp value is 5.6 × 10⁻¹⁰.

The chemical reaction is given as follows :

Fe(OH)₂ ⇄  Fe²⁺    +   2OH⁻

Ksp expression for the given reaction is given as follows :

Ksp = [Fe²⁺] [OH⁻]²

the solubilty S =  5.2x 10⁻⁴

so , the Ksp = S × (2S)²

                    = 4S³

Ksp = 4 ×S³

      = 4 × (  5.2x 10⁻⁴ )³

      = 4 × 140.6 × 10⁻¹²

      = 5.6 × 10⁻¹⁰

The solubility product value for Fe(OH)₂   that is Ksp value is 5.6 × 10⁻¹⁰.

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draw the structure or structures produced by the catalytic reduction of the given compound, in which h2 is in excess.

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Structures produced by catalytic reduction of certain compounds where H2 is H2. 1-Ethylcyclohexa-1,4-diene and excess hydrogen-ethyl-2-methylcyclohexane are formed.

Specific compound 1-Ethylcyclohexa-1,4-diene and excess hydrogen-ethyl-2-methylcyclohexane are formed. One compound has the R, S configuration and the other has the S, R configuration. Using the CIP rule, preference is given to groups attached to chiral carbons.

CIP rules are based on the atomic mass of the combined groups, so the group with the highest atomic mass has the lowest number. Since it is a mixture of two enantiomers, it can be called a Rekamic mixture. Selective catalytic reduction refers to the reduction of nitrogen oxides with oxygen and selective inorganic or organic reducing agents.

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The density of an unknown element in the gaseous state is 1.60 g at 300 K and 1 atm. Which of the following could be the element?
a. He
b. Ne
c. Ar
d.O2
e. Cl2

Answers

e. Я проходила это так что это правильно

What is the formula for cobalt (III) oxide?

Co3O2
Co2O3
Co3O
CoO3

Answers

Answer:Co2O3

Explanation:

look it up

Answer:

Co2O3

Explanation:

when you write any formula you apply the criss-cross method where you write the charges of each substance

Co3 and O2

applying the criss-cross method( you switch the charges number, in this case you switch the 2 and the 3) :-

Co2 and O3

so Co2O3

Combustion of 31.68 g of a compound containing only carbon, hydrogen, and oxygen produces 36.67 g CO2 and 15.01 gH2O. What is the empirical formula of the compound?

Answers

Combustion of 31.68 g of a compound containing only carbon, hydrogen, and oxygen produces 36.67 g CO₂ and 15.01 g H₂O. the empirical formula of the compound is CH₂O.

given that :

mass of CO₂ = 36.67 g

mass of H₂O = 15.01 g

total mass of compound = 31.68 g

moles of CO₂ = 36.67 / 44

                       = 0.833 mol

moles of C = 0.833 mol

moles of  H₂O = 15.01 / 18

                        = 0.833 mol

moles of H = 2(0.833)

                  = 1.667 mol

mass of carbon = 0.833 × 12

                           = 10 g

mass of hydrogen = 1.667 × 1

                               = 1.667 g

mass of oxygen = 31.68 - ( 10 + 1.67 )

                             = 20 g

moles of Oxygen = 20 / 16

                             = 1.25 mol

dividing by the smallest one :

C = 0.833 / 0.833 = 1

H = 2

O = 1

The empirical formula is CH₂O.

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part a: identification of a hydrocarbon write out a balanced chemical reaction for 1-hexene with br2 using structural formulae for reactants and products g

Answers

The chemical reaction and its components are as follows -

Firstly writing the balanced chemical reaction for 1-hexene and bromine gas -

1-hexene -- [tex] Br_{2}[/tex]/[tex] CH_{3}[/tex]OH--> 1,2-dibromohexane + 1-bromo-2-methoxyhexane

The structural formula of each compound is -

1-hexene: [tex] C_{6}[/tex][tex] H_{12}[/tex]

1,2-dibromohexane: [tex] C_{6}[/tex][tex] H_{12}[/tex][tex] Br_{2}[/tex]

1-bromo-2-methoxyhexane: [tex] C_{7}[/tex][tex] H_{15}[/tex]BrO

Containing alkene group, 1-hexene finds application in Linear Low Density Polyethylene. The products are used in research processes. Reaction involves incorporation of bromine atoms and methyl alcohol group on the hexene.

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In a gas chromatogram, the retention time of compounds A and B are 1.25 min and 1.45 min, respectively. If both of these compounds have similar structures, which of the compounds has a higher boiling point?

Answers

In a gas chromatogram, the retention time of compounds A and B are 1.25 min and 1.45 min, respectively. If both of these compounds have similar structures, Compound A has a higher boiling point.

Gas chromatogram is a widely used technique in analytical chemistry for the separation and investigation of compounds that may evaporate without disintegrating (GC). The purity of a substance can be assessed by GC, as can the components of a mixture. Preparative chromatography can make use of GC to separate pure compounds from a mixture. Other names for gas chromatography include vapor-phase chromatography (VPC) and gas-liquid partition chromatography (GLPC). These alternative names and the accompanying acronyms are frequently used in scientific literature. Gas chromatography is a technique for separating compounds in mixtures by injecting a gaseous or liquid sample into a mobile phase, which is usually referred to as the carrier gas, and passing the gas through a stationary phase. The mobile phase is often composed of an inert gas or an unreactive gas, such as helium, argon, nitrogen, or hydrogen. The stationary phase is a minuscule layer of viscous liquid on a surface of solid particles on an inert solid support in a piece of glass or metal tubing known as a column.

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On a hot afternoon (311 K) a party balloon was filled with 2.07 L of helium. That evening the temperature dropped to 295 K. What is the
new volumen of the balloon?

Answers

Answer:

2.02 L

Explanation:

The volume of a gas is directly proportional to its temperature, according to the ideal gas law. This means that as the temperature of a gas decreases, its volume will also decrease.

To determine the new volume of the balloon as the temperature drops from 311 K to 295 K, we can use the ideal gas law to calculate the new volume of the gas:

PV = nRT

Where:

P = the pressure of the gas (assuming it remains constant)

V = the new volume of the gas

n = the number of moles of the gas (assuming it remains constant)

R = the universal gas constant

T = the new temperature of the gas

Since we know the pressure, number of moles, and universal gas constant, we can solve for the new volume of the gas by substituting in the known values and solving for V:

V = nRT / P

Substituting in the values from the problem, we get:

V = (n * R * 295 K) / P

Since the number of moles and the universal gas constant are constants, we can simplify the equation to:

V = k / P

Where k is a constant equal to the product of the number of moles, the universal gas constant, and the original temperature of the gas (in this case, k = n * R * 311 K).

Since we know the value of k and the pressure of the gas, we can solve for the new volume of the gas by substituting in the known values:

V = (k / P)

= (n * R * 311 K) / P

= (2.07 L * 8.31 L * atm / mol * K * 311 K) / P

= 2.02 L

Therefore, the new volume of the balloon is approximately 2.02 L.

How many compounds, of the ones listed below, have hydrogen bonding?CH3CH2CH2NH2 CH3CH2NHCH2CH3 (CH3CH2)2NCH2CH32130

Answers

Since CH3CH2CH2NH2 may form intermolecular hydrogen bonds, it has a higher boiling point than other compounds. The hydrogen atoms in (CH3)3N (C H 3) 3 N are joined to the carbon atoms.

Since carbon is not a particularly electronegative atom, it cannot donate hydrogen. There aren't any hydrogen atoms to accept, despite the fact that nitrogen is a strong hydrogen atoms. As a result, CH3CH2CH2CH3 is a nonpolar molecular complex in which induced dipole forces are the only intermolecular forces. When both the donor atom, D, and the acceptor atom, A, are among the highly electronegative elements O, N, or F, hydrogen bonding occurs, as shown by the symbol D-H—-A.

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A fresh sample 1311 was left out on the benchtop for 40 days. The scientist forgot it has a half-life of 8 days. The original sample mass
was 64 g. How much of the parent isotope is left?
g

Answers

Answer:

2 g of the parent isotope is left.

Explanation:

The half-life of a radioactive isotope is the amount of time it takes for half of the isotope to decay. In this case, the half-life of the isotope is 8 days, which means that after 8 days, half of the isotope will have decayed.

To determine how much of the parent isotope is left after 40 days, we need to calculate how many half-lives have passed in that time. Since the half-life is 8 days, and 40 days have passed, we can divide 40 by 8 to find the number of half-lives that have occurred: 40 / 8 = 5

Since 5 half-lives have passed, we can calculate the amount of the parent isotope that is left by multiplying the original amount of the isotope by 1/2 to the power of the number of half-lives that have passed: 64 * (1/2)^5 = 64 * (1/32) = 2 g

Therefore, after 40 days, only 2 g of the parent isotope is left.

Consider the titration of 100.0 mL of 0.59 M H3A by 0.59 M KOH for the next three questions. The triprotic acid has Ka1 = 1.0 x 10-3, Ka2 = 1.0 x 10-6, and an unknown value for Ka3.1) Calculate the pH after 100.0 mL of KOH has been added.2) Calculate the pH after 150.0 mL of KOH has been added.3) The pH of the solution after 200.0 mL of KOH has been added is 8.00. Determine the value of Ka3 for this triprotic acid. Use scientific notation to enter this answer, e.g., 1.0 x 10-3 = 1.0E-3.

Answers

Acid concentration: 0.49 M KOH concentration is 0.49 MKa1=1.0 x 104 eq. rm

a remedy for Take the example of titrating 100 mL of 0.100 M HOCl with 0.100 M KOH at 25 °C. HOCl has a Ka of 3.5 10-8. Calculate the pH after 0.0 mL of KOH in Part 1.

Consider titrating 0.115 M RbOH in a 25.0 mL sample with 0.100 M HCl. Figure out each quantity. The initial pH and the amount of acid that must be added to achieve the equivalence point are also factors. c. the pH after adding 5.0 mL of acid. pH at the equivalency point (d). e. the pH following the addition of 5.0 mL of acid over the equivalency point.

Think about titrating 100 mL of 0.59 M H 3 a 1-3 a2-6 a3. 1) Determine the pH following

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Find the volume, in mL, of an object whose density is 400 g/mL and has a mass of 600
mg.

Answers

The volume of the object is 1.5ml.

What is the volume of an object?

This refers to the space occupied within the boundaries of an object in three-dimensional space. It is also called the capacity of the object.

In the question:

ρ = 400 g/mL

m = 600 mg

v = ?

Formular for calculating density ρ:

ρ = m/v

Where,

ρ= Density of the object

m= Mass of the object

v = volume of the object

Were are given the values of density and mass in the question. We are to calculate the volume.

Makinig v subject of the formular we have:

v = m/ρ

v =  600 mg

      400 g/mL

v = 1.5ml

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What come first egg or hen? ​

Answers

Hen because who makes the egg?


What mass of silver will be precipitated when 5.0g of copper are reacted with
excess of silver nitrate solution?
Cu(s) + 2AgNO3(aq) → Cu(NO3)₂(aq) + 2Ag(s)

Answers

As per the given balanced reaction, one mole or 63.5 g of Cu produces 2 moles or 215.6 g of silver metal. Hence, 5 g of copper produces16.9 g of Ag.

What is displacement reaction?

A displacement reaction is a type of reaction, in which one element or group of the reactant is displaced by the attacking group or element. The reaction between copper and silver nitrate is an example of single displacement reaction.

Given the balanced equation  of the reaction. One mole of Cu produces 2 moles of Ag.

atomic mass of Cu = 63.5 g/mol

atomic mass of Ag = 107.8 g/mol

mass 2 moles of Ag = 2 × 107.8 =215.6 g.

Hence, 63.5 g of Cu produces 215.6 g of Ag.

The mass of Ag produced by 5 g of Cu is calculated as follows:

mass of Ag = (5 × 215.6 g) /63.5 g = 16.9 g

Therefore, the mass of silver precipitated will be 16.9 g.

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Epinephrine is a hormone secreted into the bloodstream in times of danger and stress. It is 59% Carbon, 7.1% Hydrogen, 26.2% Oxygen and 7.7% Nitrogen by mass. Determine the empirical formula. The molar mass is 148 g/mol.

Answers

Based o the percentage masses of the elements, the empirical formula of epinephrine is C₉H₁₃O₃N.

What is the empirical formula of epinephrine?

The empirical formula of epinephrine is calculated below as follow:

Mole ratio of the elements are determined:

Carbon = 59% / 12

Carbon = 0.049 moles

Hydrogen = 7.1% / 1

Hydrogen = 0.07 moles

Oxygen = 26.2% / 16

Oxygen = 0.016

Nitrogen = 7.7% / 14

Nitrogen = 0.0055

The simplest whole-number ratio will be:

C = 0.049/0.0055

C = 9

Hydrogen = 0.07/0.0055

H = 13

Oxygen = 0.016/0.0055

Oxygen = 3

Nitrogen = 0.0055/0.0055

Nitrogen = 1

The empirical formula = C₉H₁₃O₃N

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Write the overall balanced cell reaction for the following voltaic cell Fe(s) | Fe2+ (aq) || Ag + (aq) | Ag(s) (Ctrl).

Answers

the overall balanced cell reaction for the following voltaic cell

Hg2Cl2(s) + Cu(s) ® 2Hg(l) + Cu2+(aq) + 2Cl-(aq)

The cell reaction, also known as the total reaction, is the reaction that occurs within the cell as a whole and is expressed under the assumption that the right electrode is the cathode and that the spontaneous reaction is the one in which reduction takes place in the right-hand compartment.Galvanic, also known as Voltaic, and electrolytic cells are the two varieties of electrochemical cells. While electrolytic cells utilize non-spontaneous reactions and therefore need an external electron source, such as a DC battery or an AC power source, galvanic cells get their energy from spontaneous redox reactions.

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An organism with the genotype of AaXx can produce gametes containing _________ if the two genes are unlinked.
a. either Aa or Xx
b. either AX, Ax, aX, ax
c. AaXx
d. AX or ax
e. None of the above.

Answers

An organism with the genotype of AaXx can produce gametes containing  either AX, Ax, aX, ax  if the two genes are unlinked .

An organism's genotype is the complete set of its genetic material. [1] Genotype can also be used to refer to the alleles or variants that an individual has at a particular gene or locus. The number of alleles an individual can have for a particular gene depends on the number of copies of each chromosome (also called polyploidy) found in that species. Diploid species like humans have two complete sets of chromosomes. This means that each individual has her two alleles for a particular gene. If both alleles are the same, the genotype is said to be homozygous. If the alleles are different, the genotype is called heterozygous.

Genotypes contribute to the phenotype, observable traits and characteristics of an individual or organism. The extent to which genotype influences phenotype depends on the trait.

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water is a polar molecule because: in the o-h bonds of water, the oxygen is more electronegative. the electrons in the o-h bond spend more time close to the oxygen. it has asymmetrically arranged polar bonds. water molecules have permanent electric dipole moments. the hydrogens have a partial positive charge, and the oxygen has a partial negative charge.

Answers

Water is a polar molecule because in the O-H bond of water, Oxygen is more electronegative due to which partial positive charge and partial negative charge is created on hydrogen and oxygen respectively, resulting in a dipole moment.

A dipole moment is created between two atoms having a suitable electronegativity (ability to pull electrons more towards itself) difference.

A difference in electronegativity between two atoms creates a partial positive charge and a partial negative charge on the atoms. The electrons are pulled towards the atom having partial negative charge. The resultant direction of the atoms in which they get pulled gives the dipole moment of the bond.

If the resultant dipole is zero then the bond is considered to be non-polar

water is an example of a polar molecule as in the bent structure of the molecule, with oxygen at the center, surrounded by two H atoms on both sides, the electrons of the two O-H bonds are pulled towards O, resulting in a dipole moment in the upward direction. Thus, making water a polar molecule.

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i can not figure out this question to save my life

Answers

Specific heat capacity of a substance is the amount of heat required to raise the temperature by one degree Celsius of one gram of a substance. Therefore, the total enthalpy of the given reaction is -781.44KJ.

What is Enthalpy?

Enthalpy term is basically used in thermodynamics to show the overall energy that a matter have. Mathematically, Enthalpy is directly proportional to specific heat capacity of a substances.

Mathematically,

q = n ×ΔH

where

q = amount of heat

n = no of moles

ΔH = enthalpy

n = w / M.M

w = given mass

M.M = molar mass

4CH[tex]_3[/tex]NH[tex]_2[/tex]+2H[tex]_2[/tex]O[tex]\rightarrow[/tex]3CH[tex]_4[/tex]+CO[tex]_2[/tex]+4NH[tex]_3[/tex]   ΔH=-138.8KJ

number of moles of methyl amine=175/31.06

                                                       =5.63moles

enthalpy for reaction of one mole of methyl amine=-138.8KJ

enthalpy for reaction of 5.63 mole of methyl amine=-138.8KJ×5.63

                                                                                     =-781.44KJ

Therefore, the total enthalpy of the given reaction is -781.44KJ.

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Consider the following reaction at 276 K.
1 A + 2 B → C + D
where rate = rate=k[A][B]2. An experiment was performed for a certain number of seconds where [A]o = 0.000847 M and [B]o = 1.11 M. A plot of ln[A] vs time had a slope of -9.43. What will the rate of this reaction be if a new experiment is preformed when [A] = [B] = 0.779 M?

Answers

1 A + two C and d → C + S t where rate=k[A][B][rate] 2. An experiment with [A]o = 0.000847 T s as well as [B]o = 1.11 M was run for a predefined number of seconds. The slope of a ln[A] vs. grown steadily was -9.43. rate of reaction is 3.62m/s

Slope and slant both refer to an incline up from a reference surface or line that is generally straight. The ground slopes (either upward or straight down) sharply here. To slope is to slope vertically in an ambiguous path A line's steepness could be determined by looking at its slope. Altitude is calculated mathematically as "rise over run."

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For how many electrons is the value of ml +2

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Only two electrons can be filled in an orbital with a magnetic quantum number (ml) +2.

What are the quantum numbers?

The set of numbers that defines the position and energy of the electron filled in a specific orbital are called quantum numbers. Four quantum numbers are principal, azimuthal quantum number, magnetic, and spin quantum numbers.

The principal quantum number (n) denotes the principal electron shell of the atom and the most probable distance between the nucleus and the electrons. The azimuthal quantum number (l) denotes the shape of an orbital in which an electron is present.

The magnetic quantum number denotes the total number of orbitals in a subshell and the orientation of these orbitals.  The value of the spin quantum number (s) denotes the direction in which the electron is spinning.

For the value of n = 2, we have five values of ml which are +2, +1, 0, -1, and -2. Every value of ml represents one d-orbital. Each orbital can have two electrons.

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Compound A is an alkyne with molecular formula CsH8- When treated with aqueous sulfuric acid and mercuric sulfate, two different products with molecular formula C5H1oo are obtained in equal amounts. 0 Get help answering Molecular Drawing questions. Draw the structure of compound A. Edit 0 Get help answering Molecular Drawing questions. Draw the two products obtained in the box below Edit

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Alkynes are hydrocarbons containing a carbon-carbon triple bond. Their general formula is CnH2n-2 for molecules with triple bonds.

Alkynes undergo many of the same reactions as alkenes but can react twice due to the presence of two p-bonds on the triple bond. Ethyne is commonly known by the trivial name acetylene. It is the simplest alkyne, consisting of two carbon atoms joined by a triple bond, where each carbon can bond to a hydrogen atom.

Molecules containing a triple bond between two carbon atoms are called alkynes. A triple bond consists of one σ bond and two π bonds. As for the hydrogen atoms, this compound is unsaturated, so the extra electrons are exchanged with two carbon atoms forming a double bond.

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using curved arrow notation, write lewis acid/base equations for each of the following. remember to place formal charge on the appropriate atoms. a. aici3- b. phyp: bf3 bh3

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AlCl 3 is Lewis base,PH3 is Lewis base,BH3 is Lewis acid ,BF3 is Lewis acid.

The crucial step is AlCl 3 accepting a chloride ion lone-pair to generate AlCl 4 and the highly acidic, or electrophilic, carbonium ion. Lewis bases:  RCl +AlCl 3 → R + + AlCl 4−, etc. [ edit] The highest occupied molecular orbital (HOMO) of an atomic or molecular species that is strongly localised is known as a Lewis base.Lewis acid borane (BH3) has three hydrogen atoms and one boron atom in its molecule. The Lewis structure of borane features a single connection connecting each hydrogen atom to boron (BH3). Only three bonds surround the boron atom, and there are no lone pairs on the atom itself. We will learn how to draw the BH3 Lewis structure in this lesson.Only six electrons orbit the boron atom, according the Lewis structure of BF3. As a result, the boron atom's octal is incomplete. Borane BF3 is therefore regarded as a Lewis acid.A highly poisonous gaseous chemical is phosphorus. Three sigma bonds and one lone pair are present around the phosphorus atom in the Lewis structure of phosphine (PH3). Hydrogen and phosphorous atoms have no charges. The trigonal pyramidal shape of PH3 is a fundamental shape.

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