Use the table of molar masses to complete the question. Do NOT use any other values except the ones provided in the table below.
Element Molar Mass (g/mol)
carbon 12.01
hydrogen 1.01
oxygen 16.00
A chemist will use a sample of 30g of glucose (C6H12O6
6
12
6
) in an experiment. Determine the number of moles of glucose the chemist will use based on the molar mass values provided in the table. (Your value should be rounded to 2 decimal places; i.e. the hundredths place).
(2 points)
The number of moles the chemist will use is: moles.
To find the molar mass of glucose (C6H12O6), we need to add up the molar masses of the individual elements in the compound:
6 carbon atoms: 6 x 12.01 g/mol = 72.06 g/mol
12 hydrogen atoms: 12 x 1.01 g/mol = 12.12 g/mol
6 oxygen atoms: 6 x 16.00 g/mol = 96.00 g/mol
Total molar mass of glucose = 72.06 + 12.12 + 96.00 = 180.18 g/mol
Now, to determine the number of moles of glucose in a 30g sample, we can use the formula:
moles = mass / molar mass
moles = 30g / 180.18 g/mol
moles ≈ 0.17 moles
Therefore, the chemist will use approximately 0.17 moles of glucose in the experiment.