Question

現(xiàn)有mgKClO₃跟2gMnO₂混合加熱，完全反應(yīng)后剩余固體物質(zhì)的質(zhì)量是ng，則生成氧氣的質(zhì)量是

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A．(m+n)g
B．(m+2-n)g
C．(m-2+n)g
D．(n+2)g

Answer 1

B