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anonymous

  • one year ago

The astronaut then measures the abundance of magnesium on the new planet, obtaining the following results: Isotope Abundance (%) Mass (amu) 86 Sr 9.46 85.91 87 Sr 7.00 86.91 88 Sr 83.54 87.91 What is the atomic mass of magnesium for this planet? Express your answer to two decimal places, and include the appropriate units.

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  1. anonymous
    • one year ago
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    9.46 percent=0.0946 7.00 percent=0.0700 85.91(0.0946)+86.91(0.07)+87.91(0.8354)=

  2. anonymous
    • one year ago
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    Units are in grams since amu is grams.

  3. anonymous
    • one year ago
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    yes

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