J asked in Science & MathematicsChemistry · 1 decade ago

How to solve these problems? Significant Figures?

1) (1 x 10^3) (2 x 10^4)

2) (4 x 10^-1) / (5 x 10^2)

Please explain and not just give the answer. I have a quiz on this tomorrow.

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  • 1 decade ago
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    to do these, you must multiply the coefficients, and add the exponents. for example, on question one, you multiply 1 and 2 together, and add 3 and 4. you should get 2 x10^7. There is only one significant figure because the 1 and the 2 both have only one sig. fig.

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