Bài 5:
\(a,n_{O_2}=\dfrac{m}{M}=\dfrac{6,4}{16}=0,4\left(mol\right)\\ V_{O_2\left(đktc\right)}=n.22,4=0,4.22,4=8,96\left(l\right)\)
\(b,n_{H_2}=\dfrac{2,4.10^{23}}{6.10^{23}}=0,4\left(mol\right)\\ V_{H_2\left(đktc\right)}=n.22,4=0,4.22,4=8,96\left(l\right)\)
\(c,n_{CO_2}=\dfrac{m}{M}=\dfrac{2,2}{44}=0,05\left(l\right)\\ V_{O_2\left(đktc\right)}=n.22,4=1,12\left(l\right)\)
Bài 6:
\(a,n_{Na_2SO_4}=\dfrac{m}{M}=\dfrac{75,6}{142}=\dfrac{189}{355}\left(mol\right)\)
\(b,n_{CaCO_3}=\dfrac{m}{M}=\dfrac{20}{100}=0,2\left(mol\right)\)
\(c,n_{NaCl}=\dfrac{m}{M}=\dfrac{46,8}{58,5}=0,8\left(mol\right)\)
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