Think about the lab procedure you just read. label each factor below with v for variable or c for constant. temperature of the gas: volume of the gas in the syringe: weight put on the syringe: number of moles of gas in the syringe: mass of gas in the syringe: number of gas molecules in the syringe: hypothesis: if the pressure on a gas is increased, then its volume will decrease because the gas molecules will be pushed closer together. (this is in accordance with boyle's law): p = kv-1 the words underlined above are the only variables for the lab procedure; the other factors are constant. therefore, this procedure will you test the hypothesis.