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An atom of gold has a mass of approximately 3.25 × 10−22 grams. What is the mass of 7000 atoms of gold? Express your answer in...Asked by Jacob
An atom of gold has a mass of approximately 3.25×10^-22 grams. What is the mass of 4000 atoms of gold? Express your answer in scientific notation.
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Answered by
Reiny
4000(3.25×10^-22)
= 13000×10^-22
= 1.3×10^-18
How many decimals did I move the decimal point from 13000 to 1.3? How did I compensate for this in the 10^-22 ?
= 13000×10^-22
= 1.3×10^-18
How many decimals did I move the decimal point from 13000 to 1.3? How did I compensate for this in the 10^-22 ?