Enter All Answers in the Bubble Sheets E) MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Which of the following represents a chemical property of hydrogen gas? A) It is gaseous at room temperature. B) It is tasteless. C) It is less dense than air. D) It reacts explosively with oxygen. It is colourless. CHY 103 A) 376 J B) 3-102 J C) 376.2 J D) 376.20 1/ E) 3.8x102 J 2) What answer should be reported, with the correct number of significant figures, for the following calculation? 100.0 g -4.18 Jg-1-1.(26.4 C-25.5 C) 418 M 0.9 A) Ar B) Kr F2014 3) Which of the following is an example of the law of multiple proportions? A) Two different samples of table salt are found to have the same ratio of sodium to chlorine. B) The atomic mass of bromine is found to be 79.90 amu. C) a D) Art E) C- C) Nitrogen dioxide always has a mass ratio of 2.28 g 0:1 g N. D) A sample of chlorine is found to contain three times as much C1-35 as C1-37. E) Two different compounds formed from carbon and oxygen have the following mass ratios: 1.33 g 0:1 g C and 2.66 g 0:1 g C 4) What species is represented by the following information? pt=17 18 e-18