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A sample of copper (Cu) contains 69.17% Cu-63. The remaining copper atoms are Cu-65. What is the average atomic mass of copper?​
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A sample of copper (Cu) contains 69.17% Cu-63. The remaining copper atoms are Cu-65. What is the average atomic mass of copper?​

User Manmay
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1 Answer

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The atomic mass is 63.55 amu
User Robert Claypool
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