Question 1.

What causes gas particles to collide with the walls of their containers?
A : Their volume
B : Their constant motion
C : Their pressure
D : Their small size

Question 2.

A balloon is filled with 5 grams of Helium gas. If the balloon takes up 10 mL of space and has a pressure of 20 mm Hg, which gas law needs to be used to find the temperature inside the balloon?
A: Charles law
B: Boyle’s law
C: Ideal gas law
D: Combined gas law

B : Their constant motion

C: Ideal gas law

Explanation:

Question 1:

Gas particles collides with the walls of their containers due to their constant motion.

Gases moves randomly and haphazardly in all direction and they collide with themselves and the walls of their container.

The kinetic theory of gases provides a better oversight into this;

Based on this premise, we can clearly decipher that gas particles collides with the walls of their containers because they are always in constant motion

Question 2:

Given parameters:

Mass of the Helium gas = 5g

Volume of gas = 10mL

Pressure on gas = 20mmHg

Unknown:

Appropriate gas law to solve this problem = ?

Solution:

The ideal gas law would be the perfect plug to derive the unknown temperature.

This gas law is a derivative of the of three gas laws which are;

The law is written as:

                      PV = nRT

P is the pressure

V is the volume

R is the gas constant

n is the number of moles

T is the unknown temperature in this problem

the number of moles is;

         number of moles =

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