ianian Posted October 17, 2015 Share Posted October 17, 2015 Please help me to solve this problem(give me some hints). Thank you so much! A sample of cocaine, C7H21O4N, is diluted with sugar, C12H22O11. When a 1.00mg sample of this mixture is burned, 1.00mL of carbon dioxide(d=1.80g/L) is formed. What is the percentage of cocaine in this mixture? Link to comment Share on other sites More sharing options...
studiot Posted October 17, 2015 Share Posted October 17, 2015 (edited) You didn't say but I assume the combustion takes place in an adequate supply of oxygen. You need to write balanced equations for the combustion of cocaine and sugar and combine the two equations into a single one, using the proportion of cocaine = X and the proportion of sugar = (1-X) Have you done this? Edited October 17, 2015 by studiot Link to comment Share on other sites More sharing options...
ianian Posted October 18, 2015 Author Share Posted October 18, 2015 Thank you, I will try it out. Link to comment Share on other sites More sharing options...
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