WHAT TO DO
- Choose the Time view and press Set to 1 mole.
- Switch to People, then Water. Record each number in your table.
- Slide the number down to 1 million, 1 billion and 1 trillion to compare.
- Answer the check question.
CONTROLS
Illustrative data. These are estimates that show size, not exact counts. 1 year = 3.156 × 10⁷ s. 8.0 billion people. One drop of water = 0.050 g.
CHECK YOUR ANSWER
Counting 1 mole at one per second takes how many times the age of the universe (1.38 × 10¹⁰ years)?
Set the view to Time and 1 mole, then answer.