Recent content by seru eman

PROBLEM: 0.20 moles of C?H?N? + 60,7 g O2 --> 35,2 g CO2 + 25,2 g H2O + ? g NO2 how many grams of the molecule C?H?N? did we have before the reaction? Find the forumla. ANSWER: 18,1g, C4H14N2 BUT: how do you solve it? Thanks in advance!