@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?

@X@user.full_name@X@ @GMU: The density of a particular gas is 0.6492 g/L at 740.28 mm Hg and 20.11 °C. Which gas is it?

@X@user.full_name@X@ @GMU: Assume you have an open ended manometer filled with an oil having a density of 0.7869 g/mL at 20°C rather than mercury (density = 13.546 g/mL at 20°C). What is the pressure in atmospheres if the level of the arm open to the atmosphere is 107.42 cm lower than the level in the arm connected to the gas sample? The atmospheric pressure reading is 744.86 mm Hg.

@X@user.full_name@X@ @GMU: A flexible container was filled with 0.1195 mol of CH4 at a volume of 10.25 L. How many moles of this gas would there be if the volume decreased to 4.31 L? Assume pressure is constant.

@X@user.full_name@X@ @GMU: A flexible container was filled with 0.1735 mol of N2O4 at a volume of 15.11 L. How many moles of this gas would there be if the volume increased to 23.44 L? Assume pressure is constant.

@X@user.full_name@X@ @GMU: What is the mole fraction of HCN in a mixture of 16.98 g of HCN and 45.8931 g of HI?

@X@user.full_name@X@ @GMU: Assume you have an open ended manometer filled with an oil having a density of 0.7535 g/mL at 20°C rather than mercury (density = 13.546 g/mL at 20°C). What is the pressure in atmospheres if the level of the arm open to the atmosphere is 154.80 cm higher than the level in the arm connected to the gas sample? The atmospheric pressure reading is 752.24 mm Hg.

@X@user.full_name@X@ @GMU: An unknown gas effused through a porous membrane 1.298 times slower than F2. What is the molecular mass of the unknown gas?