hoi man asked in 科學及數學化學 · 1 decade ago

2007 ce chem P1

SECTION B 12b

1g organic compound Z, upon complete vapourisation , occupies 400cm^3 at room temperature and pressure.

( molar volume of gas at rmt and p =24dm^3)

Z's empirical formula = CH2O

How to deduce its molecular formula?

請詳細作答。 Thank you!

Update:

不好意思,其實我應該問得更清楚。 Gabriella Montez ~ mock exam in progress ,你的ans即是suggested ans,我已知道了。我是不明白其中一條:no. of moles of Z = (400/1000)/24 =1/24 mol ,這條數從何來?

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