A gas has a volume of 50.0 ml and is heated until it reaches a temperature of 500K and a volume of 0.50 L, What was its original temperature?

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

Matches the chemical name of each oxide of phosphorus to its chemical formula

Is of of 3- ? a. 1--3- b. 1--2- c. 1--3- d. of