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Question
An electron’s mass is approximately 9.1093826 × 10–31 kilograms. What is this mass in grams?
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Solution
Mass of electron = 9.1093826 × 10–31 kg
= 9.1093826 × 10–31 × 1000 g ...[∵ 1 kg = 1000 g]
= 9.1093826 × 10–31 × 103 ...[∵ am × an = (a)m + n]
= 9.1093826 × 10–28 g
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