Some AsH3 gas at 33 °C with a volume of 554 ml now has a pressure of 1.21 atm and a volume of 449 mL at a new temperature of 18 °C. What was the original pressure of the
AsH3, in atm? Remember to use Kelvins and round to the correct sig digs.

Agas mixture with a total pressure of 745 mmhg contains each of the following gases at the indicated partial pressures: co2, 245 mmhg ; ar, 119 mmhg ; and o2, 163 mmhg . the mixture also contains helium gas. part a what is the partial pressure of the helium gas? phe p h e = nothing mmhg request answer part b what mass of helium gas is present in a 10.2-l sample of this mixture at 283 k ? m m = nothing g request answer

What is a scientific theory? a. a scientist's guess about how something works b. the results of an experiment obtained using the scientific method c. a proven fact that will never change d. an idea that is backed by data from many sources

Apure solvent has a vapor pressure the vapor pressure of a solution. a. equal to b. lower than c. higher than