Question

what is the mass, in grams, of 63.0 moles of c?
756 grams
5.25 grams
126 grams
378 grams

Explanation:

Step1: Recall molar - mass of carbon

The molar mass of carbon (C) is approximately 12 g/mol.

Step2: Use the mass - mole formula

The formula to calculate mass (m) from moles (n) and molar mass (M) is $m = n\times M$. Here, $n = 63.0$ moles and $M=12$ g/mol. So, $m=63.0\times12$.

Step3: Calculate the mass

$63.0\times12 = 756$ grams.

Answer:

756 grams