Scientific notation and Metric Prefixes

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Scientific notation

for example the mass of a proton
Proton mass = 0.00000000000000000000000167 grams

a steady electric current of 1 amp
1 amp = 6,250,000,000,000,000,000 electrons per second

Arithmetic with scientific notation
(6,250,000,000,000,000,000 electrons per second) x (25 seconds) =