Asked by Candice
I need help on this question. I can't seem to understand it.
Find the molecular formula of a compound with a gram molecular mass of 30 g and an empirical formula of CH3.
Please show your work! and briefly explain how you got it!
Find the molecular formula of a compound with a gram molecular mass of 30 g and an empirical formula of CH3.
Please show your work! and briefly explain how you got it!
Answers
Answered by
DrBob222
The empirical formula mass is 15; i.e., 12 for C + 3*1 for H = 15.
The molecular formula mass is 30 g so the question is asking how many units of CH3 make up the molecule.
That's 30/15 = 2 or the molecular formula is(CH3)2 = C2H6. You can check it this way.
2*12 + 6*1 = 30
The molecular formula mass is 30 g so the question is asking how many units of CH3 make up the molecule.
That's 30/15 = 2 or the molecular formula is(CH3)2 = C2H6. You can check it this way.
2*12 + 6*1 = 30
Answered by
Candice
Wow thank you for putting the time to answer that! I appreciate it. That's a simpler understanding. My teacher explained it horribly and much more complex! Thank you again.
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