# How many moles are there in 400.0 grams of carbon?

$a n s \approx 33.31 m o l$
$12.01 g$ of carbon consists of $1 m o l$
$\therefore 400.0 g$ of carbon consists of (400.0 g)/(12.01 g//mol
$\text{ } = 33.31 m o l$