@X@user.full_name@X@ @GMU: What is the mole fraction of C2H6 in a mixture of 11.90 g of C2H6 and 0.9818 g of He?

@X@user.full_name@X@ @GMU: An unknown gas effused through a porous membrane 1.088 times faster than O2. What is the molecular mass of the unknown gas?

@X@user.full_name@X@ @GMU: The average speed of NO molecules (atoms) was 627.3 m/s. What was the temperature of the gas?

@X@user.full_name@X@ @GMU: What is the molecular shape of XeO2F2 ?

@X@user.full_name@X@ @GMU: How much work has been done when the volume of a gas changes from 18.27 L to 24.10 L at a constant pressure of 1.943 atm and temperature?

@X@user.full_name@X@ @GMU: A flexible container was filled with CO gas at a pressure of 1.451 atm and volume of 15.125 L. What volume would this same gas occupy if the pressure increased to 2.613 atm? Assume temperature is constant.

@X@user.full_name@X@ @GMU: An unknown gas effused through a porous membrane 3.390 times faster than NO2. What is the molecular mass of the unknown gas?

@X@user.full_name@X@ @GMU: Draw the lewis dot structure of SO2. How many lone-pairs of electrons (first) and bonding pairs of electrons exist on the molecule SO2?

@X@user.full_name@X@ @GMU: The density of a particular gas is 1.4229 g/L at 712.40 mm Hg and 19.57 °C. Which gas is it?

@X@user.full_name@X@ @GMU: An unknown gas effused through a porous membrane 1.835 times faster than HI. Which of the substances below must be the gas?