Calculate the mass of 9.0x10^17 molecules of He gas at STP

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asked Dec 1, 2017 84.1k views

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Calculate the mass of 9.0x10^17 molecules of He gas at STP

Chemistry
high-school

Reckface asked

by Reckface

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$6,02*10^(23) \ \ \ \ \ \rightarrow \ \ \ \ 4g \ He\\ 9,0*10^(17) \ \ \ \ \ \ \rightarrow \ \ \ \ m_(x)\\\\ m_(x)=(9*10^(17)*4g)/(6,02*10^(23))\approx5,98*10^(-6)g$

Azazul answered Dec 7, 2017

by Azazul

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