Determine the mass in grams of 1,364 ∙ 10 ^ 24 carbon dioxide molecules.

Answer: 99.7 g.
Explanation of the solution to the problem: to solve this problem, you must use the following formula:
v = N / Na, where v is the amount of substance in moles, N is the number of gas molecules, Na is Avogadro’s number, Na = 6.02 * 10 ^ 23 mol ^ -1.
Next, we find the amount of substance:
v = 1.364 * 10 ^ 24 / 6.02 * 10 ^ 23 = 2.266 mol.
Now we find the mass of carbon dioxide, for this we multiply the found amount of carbon dioxide by its molar mass (M = 44 g / mol):
m = v * M = 2.266 * 44 = 99.7 g.