## What pressure would the propane gas sample have at 75 mL?

2 pressure

### What volume would the butane gas sample occupy at a pressure of 2. 35 atm?

64.7 mL

#### What was the pressure in the Erlenmeyer flask after the addition of 40 mL of water?

After adding 40 mL water, the second set of volume-pressure conditions is 110 mL and 1. 36 atm. After adding 40 mL water, the second set of volume-pressure conditions is 110 mL and 1. 36 atm.

**What is the relationship between the volume occupied by propane and its pressure? **

As the volume of propane decreased the pressure also increased. A smaller volume of a gas means that the molecules are less confined and can bump into the walls more. This causes a higher pressure.

**How did your data collected in Experiment 1 with propane gas compare to the data you collected in experiment 2 using butane? **

How did the data from Experiment 1 using propane gas compare with those collected in Experiment 2 with butane? Both experiments produced identical data. Gases behave the same way with respect to volume and pressure, regardless of their identity.

## Does your experimental data for propane verify Boyle’s law explain your response using experimental evidence?

Do your propane experimental data verify Boyle’s Law Explain. Yes, volume decreases as pressure increases. Boyle’s law states that volume and pressure are ininversely proportional.

### What does your data show happens to the pressure when the volume is doubled?

If the volume is doubled from 5.0 mL to 10.0 mL, what does your data show happens to the pressure? If the volume is doubled from 5.0 mL to 10.0 mL, my data shows that the pressure will decrease by a factor of 2.

#### What is the relationship between temperature volume and pressure in a gas?

Key concepts and summary The volume of any given gas sample is directly proportional its absolute temperature at constant press (Charles’s Law). The volume of any given gas sample is proportional to its temperature at constant pressure (Boyle’s law).

**What is the effect of pressure on the volume of a gas? **

The Relationship Between Pressure and Volume: Boyle’s Law. As the pressure on a substance increases, so does its volume. This is because the gas particles get closer together. In the opposite direction, if the pressure on a gaz decreases, its volume increases as the gas particles are able to move further apart.

**What causes the pressure in a gas? **

Pressure (force on one unit area) is caused by the rapid motion and collisions between molecules and the walls of a container. The number of molecular collisions and force in any given area will determine the pressure. The higher the number of collisions between gas molecules and walls, the greater the pressure.

## Which formula gives the work done by a gas when the volume changes at constant pressure?

The pressure is constant so the force exerted by the gas is constant. The work done is W=Fd where F (=PA), is the force applied to the piston by the pressure, and d is its displacement. The gas W does the work (W=PAd).