When calculating mass to moles. How many decimal places should i round it to?

1 Answer
Paramecium · Ernest Z.
Oct 22, 2017

Depends on the values given to you.

Explanation:

The number of total significant figures you should have in your answer is the number of significant figures in the mass.

For example, if the question gave the mass as 34.2 g, which has three significant figures, your number of moles should be rounded so that it has 3 significant figures as well (this does not necessarily mean 3 decimal places).

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