I found this question in the chemistry section of a test. I need help with number 17-- I have no idea where to start. http://gyazo.com/8e8407570f9ec590c8485d47cf429beb (PS: the answer for 16 is B, confirmed with answer manual.)

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good question! lots going on here.

Well, since you have the formula already from question 16, this is simple. The molar weight of CH is just (approx) 12+1=13 g/mol

The hard question is #16...

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