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CBSE Class 11-science Answered

number of atom in 12 g mg is equal to
Asked by RAJVEER TIWARI | 06 Jun, 2013, 10:39: AM
answered-by-expert Expert Answer

1 mole of magnesium has mass = 24 g

No. of moles in 12 g of magnesium = 12/24 = 0.5 moles of magnesium

1 mole of magnesium contains 6.02 x 1023 magnesium atoms

So, 0.5 moles of magnesium contains = 0.5 x 6.02 x 1023 = 3.01 x 1023 magnesium atoms

Answered by | 06 Jun, 2013, 10:58: AM
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