List three variables of gases that will be studied in Parts 1 and 2 of this expe

Question

List three variables of gases that will be studied in Parts 1 and 2 of this experiment a - When the temperature of a gas in a container increases, do you expect the pressure to increase or decrease (assuming the volume of the container and number of gas molecules is constant)? Provide a brief molecular explanation. b - When the volume of a gas increases, do you expect the pressure to increase or decrease (assuming the temperature and number of gas molecules is constant)? Provide a brief molecular explanation. Label whether the variables most likely exhibit an "inversely proportional" relationship (both variable goes up while the other goes down) or "directly proportional" relationship (both variables increase or decrease at the same time). Suppose you wish to study the effect of temperature on the volume of a gas by heating a gas in a cylinder and measuring the resulting changes in volume. What assumptions need to be made in order to study temperature and volume relationships? For the pressure-temperature experiment (part 2), why is it important to use temperatures that are as spread out as possible?

Explanation / Answer

Q1.

variables that affect gases are typically:

Temperature

Pressure

Volume of container

Q2a.

When T increases, then P must increase, since they are directly proportional

Recall that T increases energy, so the collisions number and energy increases, which measn higher Force, that is, Pressure

Q2b

when V increases, we expect P to decrease,

since there is more space, collision number must decrease, therefore, force, that is Pressure

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