Question

How many moles do 10.0 mg of CO represent?

0.28
0.036
0.000357
0.0036

Answer 1

0.000357 shows how many moles 10.0 of CO represent

Answer 2

For this case we have that, according to the periodic table, the atomic mass of the Carbon is
`12 \frac {g} {mol}` and that of the Oxygen is
`16 \frac {g} {mol}.`

By definition, the number of moles is given by:

`n = \frac {M} {MM}`

Where:

M: It's the mass

MM: It's the molar mass

n: It is the number of moles

10 milligrams equals to 0.01 grams

`n = \frac {0.01} {12 + 16} = \frac {0.01} {28} = 0.000357`

ANswer:

Option C