Question

Calculate the atomic mass in grams of 0.35 moles of CH4

Answer 1

First, you must know the molecular mass of CH4. (how many grams in one mole)
C=12g
H=4g
So since the molecular mass is 16 grams, just multiply your given number of moles, .35 moles, by the molar mass, 16. That will give you a final answer of 5.6 grams of CH4.

Hope this helps!

Answer 2

Answer: 5.6 grams

Explanation:

To calculate the moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Thus mass =${\text {number of moles}}\times {\text {Molar mass}}$

For $CH_4$

Moles of $CH_4$= 0.35 moles

Molar mass of $CH_4$ = 16 g/mol

Putting values in above equation, we get:

mass =$0.35moles\times 16g/mol=5.6 g$

The atomic mass of 0.35 moles of $CH_4$ is 5.6 grams.