a)
\(n_{H_2\left(dktc\right)}=\dfrac{V}{22,4}=\dfrac{5,6}{22,4}=0,25\left(mol\right)\\ m_{H_2}=n\cdot M=0,25\cdot2=0,5\left(g\right)\)
b)
\(n_{O_2}=\dfrac{3\cdot10^{23}}{6\cdot10^{23}}=0,5\left(mol\right)\\ m_{O_2}=n\cdot M=0,5\cdot32=16\left(g\right)\)
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a, \(n=\dfrac{V}{22,4}\left(đktc\right)=\dfrac{5,6}{22,4}=0,25\left(mol\right)\)
\(M=2.H=2.1=2\)(g/mol)
\(m=n.M=0,25.2=0,5\left(g\right)\)
b, \(n=\dfrac{3.10^{23}}{6.10^2}=0,5\left(mol\right)\)
\(V=n.22,4\left(đktc\right)=0,5.22,4=11,2\left(l\right)\)
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