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Question
Express the following in standard form:
Mass of a molecule of hydrogen gas is about 0.00000000000000000000334 tons.
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Solution
Mass of a molecule of hydrogen gas is about 0.00000000000000000000334 tonnes
Standard form = 0.334 × 10–20
= 3.34 × 10–20 × 10–1 ...[∵ am × an = (a)m + n]
= 3.34 × 10–21
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