The molar mass of carbon dioxide will be:
M (CO2) = 2A (O) + A (C) = 2 * 16 + 12 = 44 g / mol;
Let’s find the amount of substance carbon dioxide:
n (CO2) = m (CO2) / M (CO2) = 11/44 = 0.25 mol;
Let’s find the number of gas molecules:
N (CO2) = n (CO2) * NA = 0.25 * 6.02 * 10 ^ 23 = 1.505 * 10 ^ 23.
Answer: n (CO2) = 0.25 mol; N (CO2) = 1.505 * 10 ^ 23.
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