cHEMMM`
2008-05-05 9:36 am
What mass of hydrogen peroxide (H2O2) contains the same number of atoms as 1.6g of methane (CH4) ?
回答 (1)
2008-05-05 10:03 am
✔ 最佳答案
no.of moles of CH4 = 1.6/[12+4] =0.1
no.of atoms in CH4 = 0.1A (A: Avogadro constant)
no.of atoms in CH4= no.of atoms in H2O2
no.of atoms in H2O2 = 0.1A
no.of moles of H2O2 =0.1A/A =0.1
Mass of H2O2 = 0.1 x[2+16(2)] =3.4 g
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080505000051KK00207