QUIZ 1. When driving a car, a legal limit for ethanol (Mr = 46.0) is 80 mg per 100 cm3 of blood. What is this concentration in mol/dm3? 2. A gas cylinder contains 4.4 kg of propane (C3H8). How many propane molecules are in the cylinder? (The Avogadro constant, L = 6.02 × 1023 mol–1) (Ar C:12, Ar H: 1) 3. Calculate the number of molecules in 11.2 liters of SO2 gas at STP! (Ar S: 32, Ar O:16) 4. What is the empirical formula of an oxide of nitrogen (NxOy) that contains 26% nitrogen by mass? (Ar N: 14) QUIZ 1. When driving a car, a legal limit for ethanol (Mr = 46.0) is 80 mg per 100 cm3 of blood. What is this concentration in mol/dm3? 2. A gas cylinder contains 4.4 kg of propane (C3H8). How many propane molecules are in the cylinder? (The Avogadro constant, L = 6.02 × 1023 mol–1) (Ar C:12, Ar H: 1) 3. Calculate the number of molecules in 11.2 liters of SO2 gas at STP! (Ar S: 32, Ar O:16) 4. What is the empirical formula of an oxide of nitrogen (NxOy) that contains 26% nitrogen by mass? (Ar N: 14) QUIZ 1. When driving a car, a legal limit for ethanol (Mr = 46.0) is 80 mg per 100 cm3 of blood. What is this concentration in mol/dm3? 2. A gas cylinder contains 4.4 kg of propane (C3H8). How many propane molecules are in the cylinder? (The Avogadro constant, L = 6.02 × 1023 mol–1) (Ar C:12, Ar H: 1) 3. Calculate the number of molecules in 11.2 liters of SO2 gas at STP! (Ar S: 32, Ar O:16) 4. What is the empirical formula of an oxide of nitrogen (NxOy) that contains 26% nitrogen by mass? (Ar N: 14) QUIZ 1. When driving a car, a legal limit for ethanol (Mr = 46.0) is 80 mg per 100 cm3 of blood. What is this concentration in mol/dm3? 2. A gas cylinder contains 4.4 kg of propane (C3H8). How many propane molecules are in the cylinder? (The Avogadro constant, L = 6.02 × 1023 mol–1) (Ar C:12, H: 1) 3. Calculate the number of molecules in 11.2 liters of SO2 gas at STP! (Ar S: 32, O:16) 4. Hydrogen chloride gas (7.3 g) is in a container at a pressure of 1 atmosphere and a temperature of 25 oC. (Ar Cl:35.5) (1) How many moles of gas are present? (2) How many molecules of gas are present? 5. Formic acid (HCOOH) is a liquid monoprotic acid. What mass of formic acid should be taken and diluted to obtain 1.00 liter of a 0.075 M solution? QUIZ 1. When driving a car, a legal limit for ethanol (Mr = 46.0) is 80 mg per 100 cm3 of blood. What is this concentration in mol/dm3? 2. A gas cylinder contains 4.4 kg of propane (C3H8). How many propane molecules are in the cylinder? (The Avogadro constant, L = 6.02 × 1023 mol–1) (Ar C:12, H: 1) 3. Calculate the number of molecules in 11.2 liters of SO2 gas at STP! (Ar S: 32, O:16) 4. Hydrogen chloride gas (7.3 g) is in a container at a pressure of 1 atmosphere and a temperature of 25 oC. (Ar Cl:35.5) (1) How many moles of gas are present? (2) How many molecules of gas are present? 5. Formic acid (HCOOH) is a liquid monoprotic acid. What mass of formic acid should be taken and diluted to obtain 1.00 liter of a 0.075 M solution? QUIZ 1. When driving a car, a legal limit for ethanol (Mr = 46.0) is 80 mg per 100 cm3 of blood. What is this concentration in mol/dm3? 2. A gas cylinder contains 4.4 kg of propane (C3H8). How many propane molecules are in the cylinder? (The Avogadro constant, L = 6.02 × 1023 mol–1) (Ar C:12, H: 1) 3. Calculate the number of molecules in 11.2 liters of SO2 gas at STP! (Ar S: 32, O:16) 4. Hydrogen chloride gas (7.3 g) is in a container at a pressure of 1 atmosphere and a temperature of 25 oC. (Ar Cl:35.5) (1) How many moles of gas are present? (2) How many molecules of gas are present? 5. Formic acid (HCOOH) is a liquid monoprotic acid. What mass of formic acid should be taken and diluted to obtain 1.00 liter of a 0.075 M solution?
