Question

How many moles of co2 are present in 220 milligrams?

Answer 1

220 mg = 0.22 g. molar mass CO2 = 44.0 g/mol.

mol = mass / molar mass

0.22 g / 44.0 g/mol = 0.005 mol.
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Answer 2

The number of moles of given amount of carbon dioxide is 0.005 moles

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

We are given:

Given mass of carbon dioxide = 220 mg = 0.220 g    (Conversion factor:  1 g = 1000 mg)

Molar mass of carbon dioxide = 44 g/mol

Putting values in above equation, we get:

$\text{Moles of carbon dioxide}=\frac{0.220g}{44g/mol}=0.005mol$

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