Answers

(1)

 濃度34%【0.034】から、50(g)×0.034=1.7(g)

 H₂O₂【34(g/mol)】から、1.7(g)/34(g/mol)=0.05(mol)

(2)

 2H₂O₂→2H₂O+O₂ から,0.05(mol)×(1/2)=0.25(mol)

 22.4(L/mpl)から、22.4(L/mpl)×0.25(mol)=5.6(L)

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