Question

since there are two sources of oxygen (the menthol and the air), we have to determine how much of the sample was oxygen by subtracting out the c and h. convert mol c to g c. there are 0.0064280845 mol c. how many grams of carbon are in the sample? ? g c

Explanation:

Step1: Recall molar mass of C

Molar mass of C is \(12.01\space g/mol\).

Step2: Use mass = moles × molar mass

Given moles of C (\(n\)) = \(0.0064280845\space mol\), molar mass (\(M\)) = \(12.01\space g/mol\).
Mass (\(m\)) = \(n\times M\) = \(0.0064280845\space mol\times12.01\space g/mol\)
Calculate the product: \(0.0064280845\times12.01 \approx 0.0772\)

Answer:

\(0.0772\) (or more precisely, \(0.0064280845\times12.01 = 0.077201294845\approx0.0772\) g C)