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Massa molekul relatif dari H2CO3 adalah.... (Ar H=1, C=12, O=16)
62
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Berapa jumlah partikel dari 0,01 mol H2O? (Ar H=1, O=16)
6.02 x 10^21
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Berapa Massa dari 0,5 mol K2O? (Ar K=39, O=16)
47
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