Calculatate the number of mole of oxygen molecules present in 4g of oxygen
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Answer:
7.52×10²² is your answer mate
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Answered by
1
Explanation:
no of moles = given mass/ molar mass
= 4 gm / 32 gm mol^-1
= 1/8 mol
= 0.125 mol
if we are to find no of molecules = no of moles * NA
= 0.125 mol * 6.022×10^22
= 7.52 × 10^22
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