2. Explain the effect of:

a. Adding or removing gas to a constant volume. What happens to the pressure? Is this a

direct or indirect relationshin?

The pressure increases when you add gas and decreases when you remove gas. This a direct relationship.

Explanation:

The pressure comes from the collisions of the particles with the walls of the container.

If there are more particles, there are more collisions. The pressure increases.

If there are fewer particles, there are fewer collisions. The pressure decreases.

The pressure is directly proportional to the number of particles.

p ∝ n

hey there!

mass = 6.75 g

volume =   9 cm³

therefore:

d = mass / volume

d   = 6.75 / 9

d = 0.7 g/cm³

answer b

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l