What happens when the pressure of a gas is lowered? A. The number of molecules increases. B. The molecules collide less frequently. C. The molecules decrease in volume. D. The temperature of the system increases.

The first element on the periodic table of elements is carbon. a. true b. false

Blank allows you to do calculations for situations in which only the amount of gas is constant a)boyle's law b)combined gas law c)ideal gas law d)dalton's law

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.