I answered that usually there is no direct way to determine the molecular formula of a substance from its percent composition. This is shown in C2H4, where it technically have the same percentage composition as C4H8 but still is a different molecule with diffrent properties. However, for some molecules such as water, a substance H4O2 does not exist, so the percentage composition would be able to be used to determine the molecular formula.
Anyone able to agree with this or disagree?
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I said that you would be able to determine the molecular formula because the percents can be used to determine the number of moles in a 100 gram sample, which could then be used to find the molecular formula.
ReplyDeleteI said no they couldnt because you would need to know the molar mass to find the molecular formula. Amy said she asked ms trinkle and got the same answer, so im assuming its right lol.
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