50 POINTS PLEASE HELP!

A gas diffuses 1/7 times faster than hydrogen gas (H2).

What is the molar mass of the gas?

100.10 g/mol
98.78 g/mol
86.68 g/mol
79.98 g/mol

Answer: The molar mass of the gas is 9.878 g/mol.

Explanation:

According to Graham's law, the rate of diffusion is inversely proportional to square root of molar mass of gas.

[tex]Rate = \frac{1}{\sqrt{M}}[/tex]

where,

M = molar mass of gas

As given gas diffuses 1/7 times faster than hydrogen gas. So, its molar mass is calculated as follows.

[tex]\frac{R_{1}}{R_{2}} = \sqrt{\frac{M_{2}}{M_{1}}}\\[/tex]

where,

[tex]M_{1}[/tex] = molar mass of hydrogen gas

[tex]M_{2}[/tex] = molar mass of another given gas

[tex]R_{1}[/tex] = rate of diffusion of hydrogen

[tex]R_{2}[/tex] = rate of diffusion of another given gas = [tex]\frac{1}{7}R_{1}[/tex]

Substitute the values into above formula as follows.

[tex]\frac{R_{1}}{R_{2}} = \sqrt{\frac{M_{2}}{M_{1}}}\\\frac{R_{1}}{\frac{1}{7}R_{1}} = \sqrt{\frac{M_{2}}{2}}\\7 \times 1.414 = M_{2}\\M_{2} = 9.878 g/mol[/tex]

Thus, we can conclude that the molar mass of the gas is 9.878 g/mol.

Answer:

98.78 g/mol

Explanation:

Just took the test

How many moles are in 25.0 grams of KMnO4?

0.124 mol KMnO4
0.158 mol KMnO4
0.199 mol KMnO4
0.316 mol KMnO4

Write the electronic configuration of the following element or ion and circle on their valance electrons
A.27 Al =
13
B. 31p-3
15




please answer my question now ! I will give you a Brinalist ​

Which refers to solid ice that condenses and forms on surfaces like grass or windows?

dew
frost
hail
sleet

Energy is released when the nucleus of an atom splits and two smaller atoms are formed. What is the name of this process?

A. Electricity

B. Nuclear Fusion

C. Positron Particles

D. Nuclear Fission

What is the role of the producer in any food chain?

Question 1 options:

Producers turn light energy into food energy

Producers make the food that consumers eat

Without producers, consumers would starve

All of these answers are correct

Given the following equation: Na2O + H2O ---> 2 NaOH
How many moles of NaOH are produced from 1.02 moles of Na2O?

Which phrase describes a volcano that is not expected to erupt again?

1 quiet volcano
2 extinct volcano
3 dormant volcano
4 explosive volcano

Hurry please need fast

In the following chemical phrase how many moles of O are there? 6
C2H602* 2
6
12
3

At what temperature will 2.50 moles of ideal
gas produce a pressure of 25.0 atm in a 10.0 L
container

How many calories are absorbed in a process that absorbs 0.128 joules?
A. 0.031 cal
B. 0.536 cal
C. 536 cal
D. 0.310 cal

What is the oil refining process?

What happens when a current is applied to two electrodes immersed in pure water?

A. No electrolysis occurs, and current does not flow.

B. Oxygen, but not hydrogen, is released as a gas.

C. Electrolysis occurs, releasing oxygen and hydrogen gas.​

The saturation point for a solution is 50.0 grams of solute per 500 grams of solvent. How many grams of solute can be dissolved in 800. grams of solvent?
Plz help me

(PLEASE HELP) 500 mL of a gas is collected at 745 mmHg. What will the volume be at 1.8 atm?

Look at the diagram below. According to the diagram, what substance(s) are the
reactant(s)? What substance(s) are the product(s)? Explain your reasoning.
NH3(aq) + HCI (aa)
Ammonia Hydrochloric acid
NHCI (aa)
Ammonium chloride
You will be graded on the following rubric:
luje

A cylinder is filled with 10.0 L of gas and a piston is put into it. The initial pressure of the gas is measured to be 273. kPa.
The piston is now pulled up, expanding the gas, until the gas has a final volume of 50.0 L. Calculate the final pressure of the gas. Be sure your answer has the
correct number of significant digits.

Describe how you could show that a compound is an acid