Find the relative atomic mass of copper which is found to contain 69% of atoms with mass number 63, and 31% of atoms with mass number 65. give your answer to one decimal place.
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Card 11
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what are ions
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Card 12
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when was the idea accepted that everything was made up of atoms and based off whos research?
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Card 13
Front
who came up with the plum pudding model, when, and how
