Verified Answer :

Willchemistry

1 mole C ------------- 12 g
? moles C ---------- 3.50 g

3.50 x 1 / 12 => 0.29 moles

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Answer:

\(n_C=0.292molC\)

Explanation:

Hello,

In this case, by means of the given mass, we should remember that one mole of a particular element, equal its atomic mass. In such a way, since carbon is the involved element and its molar mass is 12g/mol, we perform the following mathematical operation in order to obtain the moles via proportions:

\(n_C=3.50gC*\frac{1molC}{12gC} \\\ _C=0.292molC\)

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