Question

The amount (mass) of Carbon in a 24 gram sample of Methane is 18 grams. Find the percent of carbon in the sample.
60%
75%
90%
80%

Answer 1

To find the percent of carbon in the sample of methane, you can use the following formula:

\[
\text{Percent of Carbon} = \left( \frac{\text{Mass of Carbon}}{\text{Total Mass of Sample}} \right) \times 100
\]

In this case, the mass of carbon is 18 grams, and the total mass of the sample is 24 grams. Plugging these values into the formula gives:

\[
\text{Percent of Carbon} = \left( \frac{18 \text{ g}}{24 \text{ g}} \right) \times 100
\]

Calculating this:

\[
\text{Percent of Carbon} = \left( 0.75 \right) \times 100 = 75\%
\]

Therefore, the percent of carbon in the sample is **75%**.