Answer:
[tex]1 \: mole \: of \: sulphurdioxide \: weighs \: 64 \: g \\ 0.850 \: moles \: will \: weigh \: (0.850 \times 64) \: g \\ = 544 \: g[/tex]
The mass of 0.85 mol of sulfur dioxide has been 54.4 grams.
Moles can be calculated as the ratio of the mass to the compound to the molecular mass. The moles can be expressed as:
Moles = [tex]\rm \dfrac{mass}{molecular\;mass}[/tex]
Mass = moles [tex]\times[/tex] molecular mass
The molecular mass of sulfur dioxide = Mass of sulfur + 2 [tex]\times[/tex] mass of oxygen
= 32 + 2 [tex]\times[/tex] 16
= 32 + 32
= 64 g/mol
The given moles of sulfur dioxide = 0.850 mol
The mass of sulfur dioxide = 0.850 [tex]\times[/tex] 64
The mass of sulfur dioxide = 54.4 grams.
The mass of 0.85 mol of sulfur dioxide has been 54.4 grams.
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3. What are the planets called that are mostly made of gas?
Explanation:
The gas planets are Jupiter, Saturn, Uranus and Neptune.
Answer:
A gas giant is a large planet composed mostly of gases, such as hydrogen and helium, with a relatively small rocky core. The gas giants of our solar system are Jupiter, Saturn, Uranus and Neptune. These four large planets, also called jovian planets after Jupiter, reside in the outer part of the solar system past the orbits of Mars and the asteroid belt. Jupiter and Saturn are substantially larger than Uranus and Neptune, and each pair of planets has a somewhat different composition.Although there are only four large planets in our solar system, astronomers have discovered thousands outside of it, particularly using NASA's Kepler Space Telescope. These exoplanets (as they are called) are being examined to learnmore about how our solar system came to be.Explanation:
hopeit helps...For an ideal gas, evaluate the volume occupied by 0.3 mole of gas.
Answer:
V=0.3×22.4=6.72 liters hope this helps
HELLLLLPPPPP PLZZZZZZZ
when monomers are joined together, what do they form?
The monomers combine with each other via covalent bonds to form larger molecules known as polymers. In doing so, monomers release water molecules as byproducts.
Una masa de aire ocupa un volumen de5litro a una temperatura de 120c Cual será el nuevo volumen si la temperatura se reduce ala mitad. Un gas ideal ocupa un volumen de 4000ml a una presión absoluta de 1500 kilo pascal Cual será la presión si el gas es comprimido lentamente hasta 750 kilo pascal a temperatura constante? Un gas ocupa un volumen de 200 litros a 95c y 782mmHg Cual será el volumen ocupado por dicho gas a 65cyn815mmHg
Answer:
1. [tex]V_2=2.5L[/tex]
2. [tex]V_2=8000mL[/tex]
3. [tex]V_2=176.3L[/tex]
Explanation:
¡Hola!
En este caso, dada la información para estos problemas, procedemos de la siguiente manera, basado en las leyes de los gases ideales:
1. Una masa de aire ocupa un volumen de 5 litros a una temperatura de 120 °C Cual será el nuevo volumen si la temperatura se reduce a la mitad:
Aqui, utilizamos la ley de Charles, asegurándonos que la temperatura está en Kelvin:
[tex]\frac{T_2}{V_2} =\frac{T_1}{V_1} \\\\V_2 =\frac{V_1T_2}{T_1} \\\\V_2 =\frac{5L*196.5K}{393K} \\\\V_2=2.5L[/tex]
2. Un gas ideal ocupa un volumen de 4000 ml a una presión absoluta de 1500 kilo pascal Cual será la presión si el gas es comprimido lentamente hasta 750 kilo pascal a temperatura constante?
Aquí, utilizamos la ley de Boyle, dado que la temperatura se mantiene constante, calculando el volumen, ya que lo que se da es la presión final:
[tex]\neq P_2V_2=P_1V_1\\\\V_2=\frac{P_1V_1}{P_2}\\\\ V_2=\frac{4000mL*1500kPa}{750kPa}\\\\V_2=8000mL[/tex]
3. Un gas ocupa un volumen de 200 litros a 95°C y 782 mmHg Cual será el volumen ocupado por dicho gas a 65°C y 815 mmHg:
Aquí, utilizamos la ley combinada de los gases ideales, asegurándonos que las temperaturas están en Kelvin:
[tex]\frac{T_2}{P_2V_2} =\frac{T_1}{P_1V_1} \\\\V_2 =\frac{P_1V_1T_2}{P_2T_1} \\\\V_2 =\frac{782mmHg*200L*338K}{815mmHg*368K}\\\\V_2=176.3L[/tex]
¡Saludos!
how many atoms of zirconium are in the molecule of zirconium sulfide
Answer:
1 atom of zirconium
Explanation:
Zirconium sulfide or zirconium disulphide can be written as ZrS2.
In a chemical reaction, the number of moles of the reactants
A.
should always be equal to the number of moles of the products.
B.
depends on the amount of product that is formed.
C.
should never be equal to the number of moles of the products.
D.
may or may not be equal to the number of moles of the products.
Answer:
may or may not be equal to the number of moles of the products.
Explanation:
A chemical reaction involves the interaction between reactants to yield products. The number of moles of reactants and products in the system depends on the stoichiometry of the reaction.
The balanced reaction equation shows us the number of moles of reactants and products involved in the reaction.
Hence, in the balanced chemical reaction equation; the number of moles of reactants may or may not be equal to the number of moles of the products.
what is the hydronium ion concentration ion of a solution with a poH of 7.20
Answer:
10^-7.20 or 1×10^-7.20mol.dm^-3
Explanation:
[H3O^+]= -log[H3O^+]
=antilog(-pH)
=antilog(-7.20)
=10^-7.20 mol.dm^-3
Answer:
1.58 x 10^-7 M
Explanation:
Use the earthquake distribution map and what you know about boundaries to answer the question
17. A sample of oxygen gas has volume 150.0 mL, at 0.947 atm, what will be the volume of the gas at 750.12 mm of Hg if temperature remain constant.
Answer:
143.9 mL is the new volume for the gas.
Explanation:
Let's apply one of the gases law to solve this problem:
Boyle's law states that the product of pressure and volume remains constant when the T° is not modified.
P₁ . V₁ = P₂ . V₂
Be careful because we have T° in mmHg. We need to convert to atm:
750.12 mmHg . 1 atm / 760 mmHg = 0.987 atm
We replace data:
150 mL . 0.947 atm = 0.987 atm . V₂
V₂ = (150 mL . 0.947 atm) / 0.987 atm
V₂ = 143.9 mL
This term P . V comes from the Ideal Gases Law
P . V = n . R . T
1. Two hypothetical elements in the periodic table have different characteristics as shown in the following table.
ELEMENT, ELECTRONEGATIVITY, TYPE OF ION, ELECTRICAL CONDUCTIVITY, BRIGHTNESS
X Low Electro cation ion high conduc brightness yes
Y High Electro anion ion none conduc brightness no
According to the data in the table, answer the following questions.
a. If you were to carry out an experiment with these 2 hypothetical elements, write a hypothesis to differentiate them and write another hypothesis about how they would react with oxygen and water.
HYPOTHESIS 1:
HYPOTHESIS 2:
In four steps, design an experiment (write step 1, step 2, step 3 and step 4) to check and verify what types of links would form these elements X and Y if after a series of reactions these elements join in some type chemical bonding.
STEP 1
STEP 2
STEP 3
STEP 4
b. A series of reactions of elements X and Y are given below, complete these reactions bearing in mind that X has an oxidation number +2 and Y has an oxidation number +6.
I. X + O2 XO
II. Y + O2 YO3.
III. XO + H2O X(OH)2
IV. YO3 + H20 H2YO4.
V. X(OH)2 + H2YO4 A + H2O.
d. Considering the result (A) in reaction number 5, answer:
I. What type of chemical bond do you think A has?
II. What are its physical and chemical properties?
III. Design a four-step experiment so that you can identify the type of chemical bond that substance A obtained in reaction 5 has. The design must contain at least 2 variables to be measured and 2 hypotheses with these variables.
Answer:
gas and element and compound
Explanation:
because it's different and more power so the elements
what is the average weather condition in a place over a long period of time?
If [H3O^ + ]=1.7*10^ -3 M what is the pOH of the solution?
Answer:
The pOH of the solution is 11.23.
Explanation:
To solve this problem, we must remember the following formula for pH: pH = -log[H+].
If we plug in the value we are given, we can find the pH.
pH = -log[H+]
pH = -log(1.7*10^-3)
pH = 2.77
To find the pOH, we use the following formula:
pH + pOH = 14
To solve, we should plug in the value we found above for pH and solve for the pOH.
2.77 + pOH = 14
pOH = 11.23
Therefore, the correct answer is 11.23.
Hope this helps!
please explain what a ecosystem is.
Explanation:
An ecosystem includes the environment, living and non-living things and how they interact with each other.
For example, in a Reef ecosystem there
are marine plants and animals that depend on each other and their surrounding to survive.
What is the percent composition of phosphorus in the compound P3CI8
Answer:
24.68%
Explanation:
Molar mass of phosphorous / molar mass of P3Cl8
= 3 x 30.97 / (3 x 30.97) + (8 x 35.45)
= 92.91/376.51 x 100
= 24.676%
=24.68% (2dp)
How many Carbon Atoms are there on the PRODUCT SIDE
Answer: There are 6 carbon atoms on the product side.
Explanation:
The given reaction equation is as follows.
[tex]6CO_{2} + 6H_{2}O \rightarrow C_{6}H_{12}O_{6} + 6O_{2}[/tex]
Species present on the left side of an arrow in a chemical equation depicts the reactants.
Species present on the right side of an arrow in a chemical equation depicts the products.
Hence, products in the given reaction equation are [tex]C_{6}H_{12}O_{6}[/tex] and [tex]6O_{2}[/tex].
Therefore, there are 6 carbon atoms present on the product side.
Thus, we can conclude that there are 6 carbon atoms on the product side.
In which situation would hydrogen bonding be present?
Answer:
Water ?
Need more info.
Water is [tex]H_{2}[/tex]O
Explanation:
Answer:
Hydrogen bonding occurs when a protonic H is bonded to F, O or N and there must be a lone pair of electron in the F, O or N atom.
Which two activities are practical applications of magnetism?
Answer:
Computer hard drives use magnetism to store the data on a rotating disk. More complex applications include: televisions, radios, microwave ovens, telephone systems, and computers. An industrial application of magnetic force is an electromagnetic crane that is used for lifting metal objects.
Explanation:
Computer hard drives use magnetism to store the data on a rotating disk. More complex applications include: televisions, radios, microwave ovens, telephone systems, and computers. An industrial application of magnetic force is an electromagnetic crane that is used for lifting metal objects.
Write the net ionic equation. Don't worry about identifying the state of matter. 2 NH4Cl (aq) + 1 Mg(OH)=2NH3 (g) + 2H2O (l) + 1 MgCl2 (aq)
Answer:
2NH4^+(aq) + 2OH^-(aq) ----->2NH3(g) + 2H2O(l)
Explanation:
Molecular balanced reaction equation;
2NH4Cl (aq) + Mg(OH)2---->2NH3 (g) + 2H2O (l) + MgCl2 (aq)
Complete ionic reaction equation;
2NH4^+(aq) + 2Cl^-(aq) + Mg^2+(aq) + 2OH^-(aq) ----->2NH3(g) + 2H2O(l) + Mg^2+(aq) + 2Cl^-(aq)
Net Ionic reaction equation;
2NH4^+(aq) + 2OH^-(aq) ----->2NH3(g) + 2H2O(l)
What volume will 106.476 g N, gas at STP occupy?
O 85.1808L
O 170.362L
O 7.60543L
0 3.80271L
Answer:
170.362 L
General Formulas and Concepts:
Atomic Structure
Reading a Periodic TableMolesGas Laws
STP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 KStoichiometry
Using Dimensional AnalysisExplanation:
Step 1: Define
Identify variables
[Given] 106.476 g N
[Solve] L N
Step 2: Identify Conversions
[STP] 1 mol = 22.4 L
[PT] Molar Mass of N: 14.01 g/mol
Step 3: Convert
[DA] Set up: [tex]\displaystyle 106.476 \ g \ N(\frac{1 \ mol \ N}{14.01 \ g \ N})(\frac{22.4 \ L \ N}{1 \ mol \ N})[/tex][DA] Divide/Multiply [Cancel out units]: [tex]\displaystyle 170.24 \ L \ N[/tex]What is the oxidation state of each element in the compound CaSO4?
N is another unit for mass True or False
A student tests a solid sample of a compound and determines that it does not conduct electric
current. When the
compound is dissolved in water, the solution does conduct electric current
What type of bonding does the compound have?
a.non polar covalent
b.ionic
c.polar covalent
d.metallic
Answer:
A
Explanation:
because they are non polar so would not conduct electricity :)
The type of bonding does the compound have non polar covalent.
What is non polar covalent?A non-polar covalent bond is just a sort of chemical bond that occurs when two atoms share electrons evenly. As a result, the count of electrons shared by neighboring atoms in an atom would be identical.
What is compound?A compound would be a material made up of two or maybe more chemical elements that have been chemically bonded together.
They still wouldn't conduct electricity even though they can non-polar.
Therefore, the correct answer will be option (A).
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Loud speaker A vibrates 200 times each second. Loud speaker B vibrates 400 times each second.a)What is the frequency of the sound produced by Loud speaker A ? Give the value and unit.
b)Which loudspeaker produces higher frequency of vibrations?
(Show calculations)
Answer:
For a: The frequency produced by loudspeaker A is 200 Hz
For b: Loudspeaker B produces a higher frequency of vibrations.
Explanation:
To calculate the frequency of a loudspeaker, we use the formula:
[tex]\nu=\frac{\text{Number of vibrations}}{\text{Time period}}[/tex] ......(1)
where,
[tex]\nu[/tex] = frequency
For loudspeaker A:Number of vibrations = 200
Time period = 1 second
Putting values in equation 1:
[tex]\nu_A=\frac{200}{1s}=200Hz[/tex]
For loudspeaker B:Number of vibrations = 400
Time period = 1 second
Putting values in equation 1:
[tex]\nu_B=\frac{400}{1s}=400Hz[/tex]
Hence, the frequency produced by loudspeaker A is 200 Hz and loudspeaker B produces a higher frequency of vibrations.
Which sentence is a scientific statement?
A. The sun is constantly emitting undetectable waves.
B. Instrumental music sounds better than choral music.
C. Studying science is more important than studying art.
D. Pure water is better than sugar water for plant growth.
Answer:d
Explanation:
obv
Reset the simulation again. Set the ruler at 50 and the left platform at 20. Don't add any molecules yet. Predict what will happen when you add 30 molecules of substance A. Why do you think this will happen?
Answer:
The conversion of substance A to substance B will happen extremely slowly because of the very high activation energy that each molecule must obtain to convert.
Explanation:
Plato answer
The conversion of substance A to substance B will happen extremely slowly.
What are molecules?A molecule is two or more atoms connected by chemical bonds, which form the smallest unit of a substance that retains the composition and properties of that substance.
The conversion of substance A to substance B will happen extremely slowly because of the very high activation energy that each molecule must obtain to convert.
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How many grams of ammonia (NH3) can be produced by the synthesis of excess hydrogen gas (H2) and 253.8 grams of nitrogen gas (N2) in a synthesis reaction?
Answer:
308.2 g of NH₃.
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
3H₂ + N₂ —> 2NH₃
Next, we shall determine the mass of N₂ that reacted and the mass of NH₃ produced from the balanced equation. This can be obtained as follow:
Molar mass of N₂ = 2 × 14 = 28 g/mol
Mass of N₂ from the balanced equation = 1 × 28 = 28 g
Molar mass of NH₃ = 14 + (3×1)
= 14 + 3 = 17 g/mol
Mass of NH₃ from the balanced equation = 2 × 17 = 34 g
Summary:
From the balanced equation above,
28 g of N₂ reacted to produce 34 g of NH₃.
Finally, we shall determine the mass of NH₃ produced by the reaction of 253.8 g of N₂. This can be obtained as illustrated below:
From the balanced equation above,
28 g of N₂ reacted to produce 34 g of NH₃.
Therefore, 253.8 g of N₂ will react to produce = (253.8 × 34)/28 = 308.2 g of NH₃.
Thus, 308.2 g of NH₃ were obtained from the reaction.
What is the percentage yield when 60kg of ammonia is produced from 60kg of hydrogen?
Answer:
17.6%
Explanation:
%age yield is = actual yield /percentage yield ^100
Which element has their valence electron farthest from the nucleus?
K (Potassium)
Li (Lithium)
Na (Sodium)
Rb (Rubidium)
What is most likely to happen when two fluorine (F) atoms bond?
A: Electrons will be equally attracted to. both atoms.
B: One atom will attract electrons more strongly
than the other.
help asap please
