Avogadro's number is big. If you had 6.02 × 10²³ dollars, and could spend it at 1 billion (10⁹) dollars per second for your entire life (≈ 75 years), what approximate percentage of your original money would you have left?

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Quizplus · Accepted Answer

Avogadro's number is approximately 6.02 × 10^23. Spending 1 billion (10^9) dollars per second for 75 years (which equals 75 years × 365 days/year × 24 hours/day × 60 minutes/hour × 60 seconds/minute = 2.365 × 10^9 seconds) results in a total expenditure of 2.365 × 10^18 dollars. This is a tiny fraction of the original amount, leaving essentially 100% of the original money.

Avogadro's Number Is Big