A 1.00 L sample of a gas has a mass of 1.92 g at STP. What is the molar mass of the gas? a. 1.92 g/mol b. 19.2 g/mol c. 22.4 g/mol d. 43.0 g/mol  

If gas A has a molar mass greater than that of gas B and samples of each gas at identical temperatures and pressures contain equal numbers of molecules, then a. the volumes of gas A and gas B are equal. b. ...

In the equation H2(g) + Cl2(g) → 2HCl(g), one volume of hydrogen yields how many volumes of hydrogen chloride? a. 1 b. 2 c. 3 d. 4

A sample of argon gas at standard pressure occupies 1000. mL. At constant temperature, what volume does the gas occupy if the pressure increases to 800. mm Hg? a. 500. mL b. 760. mL c. 950. mL d. 1053. mL

The pressure of a sample of helium is 2.0 atm in a 200-mL container. If the container is compressed to 10 mL without changing the temperature, what is the new pressure? a. 200 atm b. 0.10 atm c. 100 atm d. ...