How many grams of carbon are in 20.0 grams of CH₄?
A)18.46 grams
B)14.98 grams
C)4)00 grams
D)8)00 grams

Question

Quizplus · Accepted Answer

In one mole of CH₄, there is one mole of carbon. The molar mass of CH₄ is approximately 16 g/mol, so 20 g of CH₄ is equal to 20/16 = 1.25 moles. Since there is one mole of carbon in one mole of CH₄, there must be 1.25 moles of carbon in 20 g of CH₄. The molar mass of carbon is approximately 12 g/mol, which means that 1.25 moles of carbon is equal to 1.25 x 12 = 15 g of carbon. Therefore, there are 15 grams of carbon in 20.0 grams of CH₄. The only choice that matches this answer is B.

How Many Grams of Carbon Are in 20