Density
A plastic cube has a mass of 18 g and a volume of 20 mL. What is its density?
What is 0.90 g/mL?
What temperature scale must be used in gas law calculations?
What is Kelvin?
What happens to the average kinetic energy of gas particles when their temperature increases?
What is it increases?
An object has a density of 0.92 g/mL. Will it float or sink in water with a density of 1.00 g/mL?
What is float?
A gas is cooled while its volume remains constant. What happens to its pressure?
What is it decreases?
Convert 27°C to Kelvin.
What is 300 K?
A metal sample has a mass of 54 g and displaces 20 mL of water. What is its density?
What is 2.7 g/mL?
A gas has a pressure of 1.00 atm at 300 K. Its volume stays constant as it cools to 270 K. What is its new pressure?
What is 0.90 atm?
According to the kinetic molecular theory, gas particles are in what kind of motion?
What is constant, random motion?
Seawater has a density of 1.025 g/mL. A plastic has a density of 1.15 g/mL. What will happen when the plastic is placed in the seawater?
What is sink?
A gas has a volume of 2.0 L at 300 K and 1.0 atm. If the pressure remains constant and the temperature rises to 450 K, what is the new volume?
What is 3.0 L?
What two assumptions about gas particles are made by the ideal gas model?
What are that particle volume is negligible and there are no intermolecular attractions?
A sample has an initial water volume of 40.0 mL and a final volume of 47.5 mL. What is the volume of the sample?
What is 7.5 mL?
A gas occupies 4.0 L at 1.2 atm and 300 K. It changes to 2.0 L and 400 K. What is its final pressure?
What is 3.2 atm?
Name one change that can make a real gas behave more ideally, and explain why.
What is increasing temperature, which reduces the relative importance of attractions, or decreasing pressure, which spreads particles farther apart?