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(1) The molar mass of a gas (g/mol) that has a density of 0.42 g/L at 37 °C and 0.2 atm is: (A) 44.0 (B) 80.1 (D) 53.4 (C) 22.0 (2) Whil

(1) The molar mass of a gas (g/mol) that has a density of 0.42 g/L at 37 °C and 0.2 atm is: (A) 44.0 (B) 80.1 (D) 53.4 (C) 22.0 (2) Whil

Chemistry by OpenStax (2015-05-04)
Chemistry by OpenStax (2015-05-04)
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ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
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(1) The molar mass of a gas (g/mol) that has a density of 0.42 g/L at 37 °C and 0.2 atm is: (A) 44.0 (B) 80.1 (D) 53.4 (C) 22.0 (2) Which of the following substances (all) gets the warmest (y) when absorbs the same amount of heat? (A) H₂O(1) (S = 4.18 J/g. °C) (C) Polystyrene (S = 8.31 J/g. °C) (3) Which of the following is not a unit of temperature? (A) Calori (B) Kelvin (B) Fe(s) (S = 0.45 J/g. °C) (D) Carbon graphite (S = 0.71 J/g. °C) (C) Kilojoule (D) Kilopascal (4) A 32 g of O2(g) is mixed with 12 g He(g), and 3 mole of CO(g) in closed container. If the total pressure in the container is 9 atm. The PHe (atm) is: (A) 0.96 (B) 1.50 (C) 3.8 (D) 1.29 (5) Consider the reaction: 2H2(g) + O2(g) → 2H₂O(1) The heat produced (KJ) to produce 1.0 mole of H₂O(1) is: (A) -572 (B)-286 AH = -572 KJ (C) -57.2 (6) The pressure of the gas (mmHg) given by the following manometer is: (A) 793.0 (B) 751.2 (C) 758.8 (D) 717.0 gas (D) -28.6 Patm-755mmHg h 3.8 cm
Transcribed Image Text:(1) The molar mass of a gas (g/mol) that has a density of 0.42 g/L at 37 °C and 0.2 atm is: (A) 44.0 (B) 80.1 (D) 53.4 (C) 22.0 (2) Which of the following substances (all) gets the warmest (y) when absorbs the same amount of heat? (A) H₂O(1) (S = 4.18 J/g. °C) (C) Polystyrene (S = 8.31 J/g. °C) (3) Which of the following is not a unit of temperature? (A) Calori (B) Kelvin (B) Fe(s) (S = 0.45 J/g. °C) (D) Carbon graphite (S = 0.71 J/g. °C) (C) Kilojoule (D) Kilopascal (4) A 32 g of O2(g) is mixed with 12 g He(g), and 3 mole of CO(g) in closed container. If the total pressure in the container is 9 atm. The PHe (atm) is: (A) 0.96 (B) 1.50 (C) 3.8 (D) 1.29 (5) Consider the reaction: 2H2(g) + O2(g) → 2H₂O(1) The heat produced (KJ) to produce 1.0 mole of H₂O(1) is: (A) -572 (B)-286 AH = -572 KJ (C) -57.2 (6) The pressure of the gas (mmHg) given by the following manometer is: (A) 793.0 (B) 751.2 (C) 758.8 (D) 717.0 gas (D) -28.6 Patm-755mmHg h 3.8 cm
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