How many particles are there in 32 grams of oxygen (O2)?
| February 28, 2021 | education
Problem data: m (mass of taken oxygen) = 32 g.
Reference values: M (molar mass of oxygen) = 32 g / mol; Na (Avogadro’s number) = 6.02 * 10 ^ 23 mol-1.
The number of molecules in 32 g of oxygen can be expressed from the equality: m / M = N / Na and N = m * Na / M.
Calculation: N = 32 * 6.02 * 10 ^ 23/32 = 6.02 * 10 ^ 23 molecules.
Answer: In 32 g of oxygen there are 6.02 * 10 ^ 23 molecules.
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