49) The molecular weight of a gas that has a density of 6.70 g/L at STP is A) 496 B) 150 C) 3.35 D) 0298 g/mol E) 73.0 5

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49 The Molecular Weight Of A Gas That Has A Density Of 6 70 G L At Stp Is A 496 B 150 C 3 35 D 0298 G Mol E 73 0 5 1 (22.18 KiB) Viewed 46 times

49) The molecular weight of a gas that has a density of 6.70 g/L at STP is A) 496 B) 150 C) 3.35 D) 0298 g/mol E) 73.0 50) 50) How much heat is absorbed when 30.00 g of C(s) reacts in the presence of excess SO26) to produce CS2() and COCO) according to the following chemical equation? 5C(s) + 2 SO2(0) -- CS2(1) 4 CO) AH = +239.9 kJ A) 119.8 kJ B) 239.9 kJ C) 1439 kg D) 5992 KJ 51) 51) A balloon originally had a volume of 4.39 L at 44 °C and a pressure of 729 torr. The balloon must be cooled to _"C to reduce its volume to 3.78 L (at constant pressure). A)0 B) 273 C) 546 D) 38 E) 72.9