what is the molecular weight of potassium ( k2so4)​

Answers

Answer 1

Answer:

174.259 g/mol

Explanation:

The molecular weight of potassium (K2so4) is 174.259 g/mol .

Hope it is helpful to you


Related Questions

Anyone please help I’m in summer school please

Answers

Answer:

1. Absolute time, also known as Newtonian time is a time that exists independent of the observer of the time, and therefore, can only be expressed through mathematics

Absolute dating is a dating method that makes use of the radioactive property of matter and is determined through dating of radioactive isotopes present

Absolute time (dating) is found through radioactive dating

2. Radioactive isotopes are atoms that have the property of unstable proton neutron combination or excess energy nucleus. They can be fined as unstable element

3. A stabilized isotope are the decay product atoms of the element which are non radioactive.

4. The half life is the time it takes the original isotope to decay into the decay product

5. To determine the age of a rock, the proportion of the original isotope to the amount of decay product in the rock is compared

6. The isotope used to date organic materials is carbon-14

7. The isotope used to date rocks with comparable age to the Earth is Uranium-238 that has a half life of 4.468 billion years

8. The half life of carbon-14 is only 5,700 years while the age of a dinosaur is between 245 and 66 million years ago, and therefore, carbon is absent in most fossils

9. Uranium-238 is only found in igneous or volcanic rocks and not in metamorphic rocks, therefore, fossils  of dinosaur as well as other fossils that are buried in sedimentary materials, including sand and clay, cannot be determined by Uranium-238

Explanation:

Explain the charge, the location and the size of protons, and electron.

Answers

Protons are positively charged particles that are located inside the nucleus at the center of the atom. Protons have a mass of 1 amu or atomic mass unit.

Electrons are negatively charged particles found outside the nucleus. Electrons have a mass of approximately 0 amu or atomic mass unit.

hope it helps :)

please mark brainliest!!!

What is pH value in simple words?

Answers

The pH value is a measure of how acidic/basic a substance is.

The range goes from 0 to 14, with 7 being neutral.

pH values that are less than 7 indicate acid (acidity), whereas a pH value greater than 7 indicates a base (basic).

pH is really a measure of the relative amount of free hydrogen and hydroxyl ions in the substance.

How are the vapor pressure and boiling point of alkynes affected as the chain length increases?

Answers

Answer:

Answer to the following question is as follows;

Explanation:

Alkynes' vapour pressure and normal boiling points are altered when chain length grows, since vapour pressure rises while boiling point falls.

Vapour pressure always include pressure entered by vapour with its condensed phase, pressure include molecules force of attraction include vapour

If 30.0 grams of AlC3 is produced in the reaction, how many grams of HCI must have reacted?

Answers

Answer:

Al2O3 + 6HCl ==> 2AlCl3 + 3H2O ... balanced equation

moles Al2O3 present = 30.0 g x 1 mol/101.96 g = 0.294 moles

moles HCl present = 30 g HCl x 1 mol/36.5 g = 0.822 moles HCl

HCl is LIMITING as it takes 6 moles HCl for each 1 mol Al2O3 and here that is not enough. It will run out first.

Now, using the limiting reactant, we find the moles and mass of AlCl3 that can be formed.

0.822 moles HCl x 2 moles AlCl3/6 moles HCl = 0.274 moles AlCl3 formed

mass of AlCl3 = 0.274 moles AlCl3 x 133 g/mole = 36.4 g AlCl3 formed

what is transition state​

Answers

Answer:

transition state is a point in which electrons been removed from the atom

Answer:

The highest energy structure in the reaction coordinate.

Explanation:

Calculate the molar mass AND identify the gas if 3.25 kg of this gas is stored in a 15.00 L tank and exerts a pressure of 120.0 atm at a constant temperature of 66.0°C.

Answers

Answer:

is your question correct

.

..

.

.

.

or not

what are the intermolecular forces of Sulfate ion

Answers

Answer:

oh it's easy

Explanation:

Take the hydrate

N

a

2

S

2

O

3

5

H

2

O

. Are there ionic forces between the

N

a

+

and the

S

2

O

2

3

and ion-dipole forces between the cation/anions and the water?

Is this population more likely to grows slowly or quickly in the next 10 years

Answers

nobody can say it is uncertain but in my opinion it will grow quickly in the next 10 years

Exprese la concentración de una solución de H3PO4 al 30 % en masa y con una densidad de 1.39 g/mL en: M, y N.

Answers

Respuesta:

4.26 M; 12.8 N

Explicación:

Primer paso: Calcular la concentración volumétrica (Cv)

Usaremos la siguiente expression.

Cv = Cg × ρ

Cv = 30 g%g × 1.39 g/mL = 41.7 g%mL

Segundo paso: Calcular la molaridad

La concentración volumetrica es 41.7 g%mL, es decir, hay 41.7 gramos de soluto cada 100 mL de solución. Usaremos la siguiente fórmula para molaridad.

M = masa de soluto / masa molar de soluto × litros de solución

M = 41.7 g / 97.99 g/mol × 0.1 L = 4.26 M

Tercer paso: Calcular la normalidad

Usaremos la siguiente fórmula.

N = M × Z

donde Z para un ácido es igual al número de protones.

N = M × Z

N = 4.26 mol/L × 3 eq/mol = 12.8 N

Question 1: Alkanes, Alkenes, and Alkynes

Complete the table by labeling each molecule an alkane, alkene, or alkyne.

Answers

Answer: The labelling of each molecule is listed below:

B.) alkyne

C.) Alkane

D.) alkyne

I.) alkene

Explanation:

In organic chemistry, if an organic compound contains atoms joined only by single covalent bonds, the compound is said to be saturated. The ALKANES are said to be saturated hydrocarbons. For example butane and hexane that is shown in option F and G respectively. If an organic compound contains carbon atoms joined by double or triple covalent bonds, the compound is said to be unsaturated. For example Octene and butyne as seen in option E and H respectively.

Furthermore, hydrocarbons possess8g a set of carbon-carbon double covalent bonds,>C=C<, in their carbon chains form the homologous series called ALKENES while those possessing a set of carbon-carbon triple covalent bond in their carbon chains form the ALKYNE series

From the questions above, a more informative formula known as the structural formula is used to represent the various organic substances. The formula indicates how the atoms are arranged within the molecule of a substance. A structural formula is usually shown as a planar for convenience and does not imply a flat molecule. It shows the actual arrangement of the atoms in space and the angles between the bonds. Therefore options C, D and I are alkane,alkyne and alkene respectively.

is SrO a conductor of electricity

Answers

Answer:

No and Yes

Explanation:

it depends bc its an ionic compound, therefore can't conduct electricity when SOLID, BUT unless it DISSOLVES in water it can conduct

A common oxidizing agent is..?


A. KI
C. KMnO4/H+

B. FeSO4
D. concentrated HCl

Answers

Answer:

C. KMnO4/H+

Explanation:

Oxidizing agent is a substance that has the ability to accept electrons from other substances.

how much energy is required to melt 2kg of aluminium

Answers

800kj----------




800kj----------

How does kinetic energy transform into potential energy?

Answers

kinetic energy is converted to potential energy because while it is not actually doing work, it has the potential to do work. If we drop the object from the shelf or release the spring, that potential energy is converted back into kinetic energy.

What is the total pressure in millimeters of mercury,
exerted by the gas mixture

P= _______ units?

Answers

Answer:

87059.50558 pa

Explanation:

Dalton's law of partial pressure states that Ptotal=P1 +P2+ P3

417mmHg + 150mmHg +86mmHg =653 mmHg

convert it to Pa, your answer is 87059.50558Pa.

I hope I'm of help to you

Indicar que elemento es de transición *

a) Calcio

b) Radio

c) Hierro

d) Carbono

e) Azufre

Sabiendo que las configuraciones electrónicas son correctas, determinar qué analogía es incorrecta *

a) 47Ag: [Kr] 5s2 4d9  I – B
b) 27Co: [Ar] 4s2 3d7  VIII – B
c) 41Nb: [Kr] 5s2 4d3  V – A
d) 50Sn: [Kr] 5s2 4d10 5p2  IV – A
e) N.A.

porfaaaaaaaaaaaaaaaaaaaa

Answers

Answer:

c hierro

no se la otra sorry

Name each compound. Do not capitalize element names. An example can be seen
below.
Ex. SF6: sulfur hexfluoride
a. H2O:
b. PC15:
C. SiF4:
d. N20

Answers

Answer:

a. H2O: dihydrogen monoxide

b. PCl5: Phosphorus pentachloride

c. SiF4: Silicon tetrafluoride

d. N20: dinitrogen oxide

How many grams of hydrogen is produced from 12.5 G of MG reacting with hydrochloric acid in this balanced equation?
Mg+ 2HCL —>MgCl2+H2

Answers

Answer:

1.03 grams of hydrogen is produced from 12.5 g of Mg reacting with hydrochloric acid.

Explanation:

The balanced reaction is:

Mg+ 2 HCl → MgCl₂ + H₂

By stoichiometry of the reaction, the following amounts of moles of each compound participate in the reaction:

Mg: 1 moleHCl: 2 molesMgCl₂: 1 moleH₂: 1 mole

Being the molar mass of each compound:

Mg: 24.31 g/moleHCl: 36.45 g/moleMgCl₂: 95.21 g/moleH₂: 2 g/mole

By reaction stoichiometry, the following mass amounts of each compound participate in the reaction:

Mg: 1 mole* 24.31 g/mole= 24.31 gHCl: 2 moles* 36.45 g/mole= 72.9 gMgCl₂: 1 mole* 95.21 g/mole= 95.21 gH₂: 1 mole* 2 g/mole= 2 g

Then you can apply the following rule of three: if by stoichiometry 24.31 grams of Mg produces 2 grams of H₂, 12.5 grams of Mg produces how much mass of H₂?

[tex]mass of H_{2} =\frac{12.5 grams of Mg* 2 grams of H_{2}}{24.31 grams of Mg}[/tex]

mass of H₂= 1.03 grams

1.03 grams of hydrogen is produced from 12.5 g of Mg reacting with hydrochloric acid.

TIMED HELP ASAP

19.11 g of MgSO₄ is placed into 100.0 mL of water. The water's temperature increases by 6.70°C. Calculate ∆H, in kJ/mol, for the dissolution of MgSO₄. (The specific heat of water is 4.184 J/g・°C and the density of the water is 1.00 g/mL). You can assume that the specific heat of the solution is the same as that of water.

Answers

Answer:

TIMED HELP ASAP

19.11 g of MgSO₄ is placed into 100.0 mL of water. The water's temperature increases by 6.70°C. Calculate ∆H, in kJ/mol, for the dissolution of MgSO₄. (The specific heat of water is 4.184 J/g・°C and the density of the water is 1.00 g/mL). You can assume that the specific heat of the solution is the same as that of water.

Answer:

-21.03 kJ/mol

Explanation:

∆H is enthalpy. Enthalpy is the total heat content of a system.

So we can establish that ∆H = q (heat)

The formula for heat (q)

q = cm∆T

c = specific heat capacity

m = mass of substance

∆T= change of temperature

Since we are calculating the enthalpy of the SOLUTION. We must account for both the mass of water and the mass of MgSO₄ in our q formula.

All you gotta do is plug and chug at this stage.

∆H = q     = cm∆T = (4.184)(19.11+100.0)(6.70) = 3338.986808 Joules

We have now calculated the heat (aka enthalpy) of the solution.

BUT

Remember! The problem asked for enthalpy in kj....

Use this conversion factor.

1000 J = 1 kJ

3338.986808 Joules * 1kJ/1000 J = 3.338986808 kJ

We were asked to find ∆H for the dissolution of MgSO4  in units of kj/mol so we are not finished.

Take the grams of MgSO4 in the problem  and convert it into moles using its molar mass.

MgSO4 molar mass = 120.3676 g

1 mol = 120.3676 g MgSO4   <---- Use this as a conversion factor

19.11 g MgSO4 * 1 mol MgSO4/120.3676 g = 0.15876365 mol MgSO4

Now that you've calculated the moles of MgSO4 in this solution. You can divide your heat by it.

q dissolution = 3.338.986808 kJ/ 0.15876365 mol =  21.03 kj/mol

Note that the problem tells us that the temperature of water increases.

This means that the water is experiencing an endothermic process (heat is being absorbed from MgSO4) . Mathematically, this would be indicated by a positive sign. ---> +q

We can assume MgSO4 is losing heat as it is placed into the water. It is experiencing an exothermic process (heat is being lost).  Mathematically, this would be indicated by a negative sign. ----> -q

So if we're calculating the enthalpy for the dissolution of MgSO₄ ....the value we've arrived at must be negative.

Answer

∆H = 21.03 kj/mol :)))))

I hope that helped...I feel like my explanation was a bit convoluted.

Which element has 2 valence electrons in the 2s sublevel?

Answers

Answer:

beryllium is the answer.

I hope this will help you

draw the structure of iso -pentylpropanoate​

Answers

i dont know how to draw bu tjisy drow stick people sjdiwkicksickenf

what is S in the equation G= H-T delta S?

Answers

Answer:

C

Explanation:

∂S represents change in entropy.

C
Because it explain four

Is FeS iron (ll) sulfide or iron (lll) sulfide?

Answers

Answer:

the valence of S is -2. For FeS to be neutral the valence of Fe used must be +2

and since Iron (II) has its valency 2, FeS will be Iron (II) Sulfide.

PLEASE HELP!!

Balance the equation below to answer the question. Suppose you mix 3.25 grams of nitrogen trihydride with 3.50 grams of oxygen gas. How many grams of nitrogen monoxide would you make?

A. 2.63 grams
B. 2.11 grams
C. 4.34 grams
D. 3.45 grams
E. 1.76 grams

Answers

(D)because after adding all the elements and canceling parts out it equals (3.34) so d is your answer

PLZ HELP According to the atomic model Which particles are found In the same part of the atom
a. protons electrons neutrons
B.protons and neutrons
C.protons and ​electrons
D.electrons and neutrons​

Answers

protons and neutrons
B I think its the best answer
Hope its help for your questions

Please help!!
Chemical reactions and Nuclear reactions cause matter to change in different ways. Witch TWO statements decribe how matter changes only in nuclear reactions.
• A. The automic nuclei change.
• B. Some energy is transformed into mass.
• C. The total mass of the reactions is conserved.
• D. New elements are formed​

Answers

Answer:

Answer is 2nd

Explanation:

some energy is transformed into mass

What does this chemical energy reaction describe? Water-hydrogen+oxygen

Answers

Answer:

may be you mean water= hydrogen + oxygen, this reaction describes that water is made by the combination of hydrogen and oxygen.

water is made by the chemical reaction of hydrogen and oxygen

option with explaination

Answers

Answer:

B. it's water of crystallization.

the water of crystallization, that is the number of molecules of water attached to One Copper atom gives blue color to the hydrated salt (CuSO4.5H2O)

copper II carbonate in a crucible produced only 7g of copper II oxide. What was the percentage yield of copper II oxide​

Answers

The question is incomplete, the complete question is;

.On heating 12.4 g of copper (II) carbonate in a crucible only 7.0g of copper (II) oxide was produced. What was the % yield of copper (II) oxide ? [Cu=64,C=12,O=16]

Answer:

87.5%

Explanation:

CuCO3 -------> CuO + CO2

Number of moles of CuCO3 = 12.4g/123.55 g/mol = 0.1 moles

Since the reaction is 1:1,

Mass of CuO produced = 0.1 moles × 80g/mol = 8 g

Hence,

% yield = actual yield/theoretical yield × 100

% yield = 7/8 × 100

% yield = 87.5%

Other Questions
In a particular year, a total of 46,601 students studied in two of the most popular host countries when traveling abroad. If 8483 more students studied in the most popular host country than in the second most popular host country, find how many students studied abroad in each country. There were ____ students who studied abroad in the most popular host country. 1. ng knh ca mt loi trc my l mt i lng ngu nhin c phn phi chun N ( = 250mm, 2 = 25mm2). Trc my c gi l hp quy cch nu ng knh t 245mm n 255mm. Cho my sn xut 100 trc. Tnh xc sut :a. C 50 trc hp quy cch.b. C khng qu 80 trc hp quy cch A vehicle purchased for $20700 depreciates at a constant rate of 6%.Determine the approximate value of the vehicle 14 years after purchase.Round to the nearest whole number.Question Help: Viden M Message instructorn Post to forum Divide the sum of 65/12 and 8/3 by their difference. To make sky blue Sam uses two drops of blue paint for every eight drops of white paint. He wants tomake a large amount of sky blue paint. If he uses sixteen drops of blue, how many drops of white will heneed? hai in tch q1 =-2.10^(-8), q2=1,8.10^(-8) t ti A v B trong khng kh,AB=8cm. Mt in tch q3 t ti C. 1, C u q3 cn bng 2) How was the war at the beginning for the USA? Were they winning or losing? Please, explain. GIVING BRAINLIESTWhich equations are used to calculate the velocity of a wave?O velocity = distance ~ timevelocity = wavelength x frequencyvelocity = distance/timevelocity = wavelength/frequencyvelocity = distance/timevelocity = wavelength x frequencyvelocity = distance ~ timevelocity = wavelength/frequency State the different radiations emitted by radioactive elements. if 30% of students like pineapple and 15% of them like banana , how many more students favour pineapple? Divide Decimals by Decimals.Fill in the blanks:Steps:1. Make the outside number whole (move the decimal point to the _________.)2. However many decimals places you moved on the outside number, you must move it over the ________ amount on the inside number.3. Put the decimal point on the elevator and bring it up on the roof.4. Divide as with whole numbers. Dipper Donuts licenses its brand name to foreign firms as long as they agree to run their restaurants on exactly the same lines as Dipper Donuts restaurants elsewhere in the world. In return, the foreign firms have to pay Dipper Donuts a percentage of their profits. This is an example of Fill in the missing statements and reasons in the proof Please help me with this on the picture A man with a Body Mass Index (BMI) measuring at 27% would fall into what range? Athletic Fit Average Obese If f(x) = 3 ^ x, prove that f(x) + f(x + 1) = 4f (x) . Bob wants to replace a glass window in his restaurant. The window is in the shape of a square. Its side lengths are 6 feet. Suppose glass costs $7 for each square foot. How much will the glass cost to replace the window? What does -3/8 > -1 indicate about the positions of -3/8 and -1 on the number line?! marked price of an item is 4000, what will be it's selling price having 20% discount and 10% vat. What do you know about Labor Unions and worker strikes today? What is similar and/or different?