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4 April, 09:39

How many moles are there in 2.6 x 10^24 atoms of Calcium?

a. 7.0 x 10-24 moles of Cab. 4.4 molesc. 168.36 molesd ...10 moles

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  1. 4 April, 10:12
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    1 mole = 6.02*10²³ particles

    2.6*10²⁴ atoms * 1 mol/6.02*10²³ atoms = 4.3 mol

    Answer : 4.4 moles atoms of Ca
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