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Unformatted text preview: 2 and .0910g H 2 O. In a second experiment, a .183g sample is found to contain .0158g of N. Determine the chemical formula of quinine given that its molar mass is between 300 and 350g/mol. (more from previous exams) 5. A fuel Aerozine-50 is a 50:50 blend (by mass) of N 2 H 4 and (CH 3 ) 2 N 2 H 2 . N 2 O 4 is used as an oxidant to initiate the combustion process. a) (5 points) Balance the chemical equations for the combustion of Aerozine 50: N 2 H 4 + N 2 O 4 N 2 + H 2 O (CH 3 ) 2 N 2 H 2 + N 2 O 4 N 2 + H 2 O + CO 2 b) (10 points) *Consider only the combustion of hydrazine* If 500kg of both reagents are mixed, how many kg of N 2 are produced? 6. (25 points) The active ingredient in pepto bismal contains at least 3 (maybe more) elements: C, H, and Bi. Combustion of .22105g of the active ingredient produced .1422g of Bi 2 O 3 , .188g of CO 2 and .0275g of water (and nothing else). What is the empirical formula of the compound?...
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