Wizard Test Maker - Eduware

III. STOICHIOMETRY 3. Calculate Empirical / Molecular FormulaA. Determine Molecular Formula ii. Determine Molecular Formula from Gas Density4438 A sample of an unknown gas at STP has a density of 1.25grams per liter. What is the gram molecular mass of thisgas?(1) 28.0 g (3) 64.0 g(2) 44.0 g (4) 80.0 g4091 What is the gram molecular mass of a gas that has a densityof 5.00 grams per liter at STP?(1) 27.4 g (3) 112 g(2) 56.0 g (4) 223 g3975 The density of a gas is 1.43 grams per liter at STP. Themass of 1 mole of this gas is equal to(1) 1.43 g (3) 22.4 g(2) 15.7 g (4) 32.0 g3741 What is the mass of 1 mole of a gas that has a density of2.00 grams per liter at STP?(1) 11.2 g (3) 33.6 g(2) 22.4 g (4) 44.8 g3474 If 11 grams of a gas occupies 5.6 liters at STP, what is itsgram molecular mass?(1) 11 g/mol (3) 44 g/mol(2) 22 g/mol (4) 88 g/mol3358 Which gas has a density of 1.70 grams per liter at(1) F 2(g) (3) N 2(g)(2) He(g) (4) SO 2(g)3244 The density of a gas is 0.77 gram per liter at STP. What isthe formula mass of the gas?(1) 8.5 g (3) 29 g(2) 17 g (4) 34 g3135 Which of the following gases has the greatest density atSTP?(1) SO 2(3) Cl 2(2) CO 2(4) N 23038 What is the molecular mass of a gas whose density is 1.25grams per liter at STP?(1) 14.0 (3) 20.0(2) 17.9 (4) 28.02932 An 80 gram sample of a gas has a volume of 44.8 liters atSTP. Its molecular mass is(1) 80 (3) 30(2) 20 (4) 402929 Air consists of approximately 79% nitrogen and 19%oxygen. Which gas is more dense than air at STP?(1) ammonia (3) carbon monoxide(2) methane (4) carbon dioxide2812 Which gas has approximately the same density as C 2H 6atSTP?(1) NO (3) H 2S(2) NH 3(4) SO 22597 The gram-molecular mass of a gas is 56 grams. Its densityat STP in grams per liter is(1) 1.0 (3) 2.5(2) 5.6 (4) 0.402490 Eleven grams of a gas occupies 5.6 liters at STP. What isthe molecular mass of this gas?(1) 11 (3) 44(2) 22 (4) 882435 Air consists of approximately 79% nitrogen and 19%oxygen. Which gas is less dense than air at STP?(1) CO 2(3) NH 3(2) H 2S (4) SO 21971 If 28.0 grams of a gas occupies 22.4 liters at STP, the gascould be(1) CO (3) C 2H 2(2) CO 2(4) C 2H 61908 At STP, 25.0 liters of a gas has a mass of 50.0 grams. Whatis the gram molecular mass of the gas?(1) 75.0 g (3) 25.0 g(2) 44.8 g (4) 11.2 g1667 What is the gram-molecular mass of a gas that has a densityof 1.78 grams per liter at STP?(1) 17.8 g (3) 39.9 g(2) 22.4 g (4) 79.6 g1394 What is the density, in grams per liter, of N 2gas at STP?(1) 28.0 (3) 1.25(2) 14.0 (4) 0.8001345 What is the molecular mass of a gas whose density is 1.4grams per liter at STP?(1) 16 (3) 31(2) 22 (4) 381288 What is the mass of 1.00 mole of a gas if 28.0 grams of thisgas occupies 22.4 liters at STP?(1) 1.00 g (3) 22.4 g(2) 1.25 g (4) 28.0 g1109 A sample of an unknown gas at STP has a density of 0.630gram per liter. What is the gram molecular mass of this gas?(1) 2.81 g (3) 22.4 g(2) 14.1 g (4) 63.0 g723 If the density of gas X at STP is 1.00 gram per liter, themass of a mole of this gas is(1) 1.00 g (3) 11.2 g(2) 2.00 g (4) 22.4 g660 At STP, what is the density of a gas that has a grammolecular mass of 32 grams?(1) 0.70 g/L (3) 3.2 g/L(2) 2.0 g/L (4) 1.4 g/L543 Which gas has a density of 1.52 grams per liter at STP?(1) H 2S (3) NO(2) CH 4(4) CO79 If the density of a gas at STP is 2.50 grams per liter, what isthe gram molecular mass of the gas?(1) 2.50 (3) 56.0(2) 22.4 (4) 89.698© 1998-2010 Eduware, Inc.