Question

formula 10 points
complete the following conversion. you should show the work on your own paper to be certain you have the correct choice of the two conversion factors. round your answer to the hundredths place.
how many moles is 277.28 grams of carbon?
answer

Explanation:

Step1: Recall molar mass of C

Molar mass of carbon (C) is $12.01\ \text{g/mol}$.

Step2: Use moles formula

Moles $= \frac{\text{mass (g)}}{\text{molar mass (g/mol)}}$. Substitute mass $= 277.28\ \text{g}$, molar mass $= 12.01\ \text{g/mol}$.
$$\text{Moles} = \frac{277.28}{12.01}$$

Step3: Calculate the value

$\frac{277.28}{12.01} \approx 23.09$ (rounded to hundredths place).

Answer:

23.09