GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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How many moles of copper are 4.57 x 1013 atoms of copper?
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7.59 x 10-11 moles
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2.75 x 1037 moles
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7.59 x 1011 moles
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2.75 x 1033 moles
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Explanation:
Detailed explanation-1: -The molar mass of copper is 63.5 g/mol Page 15 Molar Mass-Definition An atom of copper has an atomic mass of 63.5 amu. The molar mass of copper is 63.5 g/mol. When we measure 63.5 g of copper on a balance, we are measuring 1 mole of atoms of copper.
Detailed explanation-2: -There are 24. 6 mol Cu atoms in 1. 48×1025Cu atoms.
Detailed explanation-3: -Explanation: From your Periodic Table we learn that one mole of copper, 6.022×1023 individual copper atoms have a mass of 63.55⋅g .
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