1 3 mL at 25o C and 760 mm Hg. What volume will the gas sample occupy at the same temperature and 475 mm Hg?A) 0.130 L B) 1.04 L C) 1.74 L D) 4.45 L E) None of the above 2 o C. What will be the internal gas pressure when the tank and its contents are heated to 100o C.A) 38.2 atm B) 9.40 atm C) 10.7 atm D) 15.8 atm E) None of the above 3 A) 0.625 g/L B) 0.800 g/L C) 1.25 g/L D) 2.50 g/L E) None of the above 4 o C and 746 mm Hg. How many moles of gas were collected?A) 1.25 mol B) 0.800 mol C) 10.5 mol D) 13.6 mol E) 608 mol 5 A) 0.0245 g B) 0.0280 g C) 1080 g D) 0.560 g E) 1.1 g 6 o C and 946 mm Hg. The empirical formula of the compound is NO2 . What is the molecular formula of the compound?A) NO2 B) N4 O8 C) N3 O6 D) N2 O4 E) N5 O10 7 3 at 100o C and 740 torr. Which of the following is the correct molecular formula of the compound?A) C2 H3 O B) C6 H4 O2 C) C3 H2 O D) C4 H6 O2 E) C2 H3 O2 8 o C would be produced by the reaction of 14.75 g of MnO2 according to the following chemical equation?
MnO2 (s) + 4 HCl(aq) ----> MnCl2 (aq) + Cl2 (g) + 2 H2 O(l)A) 5.00 L B) 0.170 L C) 2.33 L D) 0.200 L E) None of the above 9 A) 701 mm Hg B) 658 mm Hg C) 396 mm Hg D) 463 mm Hg E) None of the above 10 A) low temperatures and high pressures B) low temperatures and low pressures C) high temperatures and high pressures D) high temperatures and low pressures 11 A) PV=k1 B) V=k2 T 12 A) True B) False 13 A) various gas samples at different densities B) volume of a gas sample with temperature at constant pressure C) pressure of gas samples at different volumes and constant temperature D) various liquids at constant pressure 14 A) Elasticity refers to the molecules random interactions resulting in no net energy change. B) Gas molecules are viewed as points due to large distances between them. C) Gas molecules can attract other gas molecules. D) Temperature in Kelvin and average kinetic energy are proportional.
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