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hamrogers
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hamrogers asked in Science & MathematicsChemistry · 9 years ago

parts per million calculation?

I've been staring at this question for an hour now. If anyone could show me the method used for determining the answer I'd appreciate it.

How many grams of lead are contained in 6.0x10^3 (ten to the 3rd)grams of blood? Lead content is 0.62ppm.

Thanks.

1 Answer

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  • Jenny
    9 years ago
    Favorite Answer

    1ppm is equivalent to 0.0001%

    So 0.62ppm is 0.000062%

    So you need to calculate 0.000062% of 6.0 x 10^3

    6.0 x 10^3 is 6000.

    So result is 0.000062 x 6000 = 0.372g

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