What is the mass in grams of 6.12 x 10^20 molecules of caffeine, C8H10N4O2?

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asked Feb 11, 2017 4.9k views

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What is the mass in grams of 6.12 x 10^20 molecules of caffeine, C8H10N4O2?

Chemistry
college

Haojie asked

by Haojie

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$6,02*10^(23) \ \ \ \ \ \ \rightarrow \ \ \ \ \ 194,2g\\ 6,12 * 10^(20) \ \ \ \ \ \ \rightarrow \ \ \ \ \ x\\\\ x=(6,12*10^(20)*194,2g)/(6,02*10^(23))\approx197*10^(-3)g=0,197g$

Shawn Miller answered Feb 18, 2017

by Shawn Miller

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