Question

butane has a molecular weight of 58.1 grams in one mole. how many carbon atoms are in 3.50g of butane?

Answer 1

$58,1g \ \ \ \ \ \rightarrow \ \ \ \ \ 6,02*10^{23}\\ 3,5g \ \ \ \ \ \ \ \rightarrow \ \ \ \ x\\\\ x=\frac{3,5g*6,02*10^{23}}{58,1g}\approx0,363*10^{23}=3,63*10^{22}$