Final answer:
To calculate the mass of 30,000 oxygen molecules, multiply the mass of one molecule (5.3 × 10⁻²³ grams) by 30,000, resulting in a total mass of 1.59 × 10⁻¹⁷ grams.
Step-by-step explanation:
The question is asking for the mass of 30,000 molecules of oxygen given that the mass of one molecule of oxygen is 5.3 × 10⁻²³ grams. To find the mass of 30,000 molecules, we need to multiply the mass of one molecule by 30,000.
Calculation:
Mass of one molecule = 5.3 × 10⁻²³ grams
Mass of 30,000 molecules = 30,000 × (5.3 × 10⁻²³ grams)
Mass of 30,000 molecules = 1.59 × 10⁻¹⁷ grams
Therefore, the mass of 30,000 oxygen molecules is 1.59 × 10⁻¹⁷ grams.