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dsp73
3 years ago
12

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

Chemistry
1 answer:
Brrunno [24]3 years ago
3 0
6,02*10^{23} \ \ \ \ \ \rightarrow \ \ \ \ 4g \ He\\
9,0*10^{17} \ \ \ \  \ \ \rightarrow \ \ \ \ m_{x}\\\\
m_{x}=\frac{9*10^{17}*4g}{6,02*10^{23}}\approx5,98*10^{-6}g
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