A sample of sulfur dioxide gas has a
pressure of 2.54 atm and a volume of 29.5
mL at a temperature of 66.8°C. How many
molecules of sulfur dioxide gas are in the
sample?

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car