Ideal Gas Laws

Question 1

Mole:

Answer 1

Mass of a substance that contains a number of particles equal to the Avogadro constant.

Question 2

Molar mass:

Answer 2

The mass of 1 mole of a substance.

Question 3

p1V1/T1

Answer 3

= p2V2/T2

Question 4

Brownian motion: The smoke particles move in a ‘jittering’ motion.

Answer 4

• The molecules in a gas move at random with different speeds.
• When a molecule collides with another molecule or a solid surface, it bounces and kinetic energy is conserved between them.
• Every impact causes a tiny force on the surface.
• The pressure exerted on a surface is measurable because of the very large number of impacts per second.

Question 5

Bromine diffusion is slow in air, because bromine particles change direction when they collide with air particles but…

Answer 5

It’s almost instantaneous in a vacuum because gas moves at fast speeds.

Question 6

Moles =

Answer 6

Mass/molar mass

Question 7

Molecules =

Answer 7

Avogadro’s constant x number of moles