How many electrons are there in 9g of water?
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Answer:
H2O molar mass = 18
Given mass of H2O= 9g
No. Of moles =9/18 = 0.5 mol
No. Of electron in one H2O molecule = 2 + 8 = 10 e
Total no. Of electron = 0.5 mol × 10= 5 mol .
Explanation: