find the moles
1. 20 gram of chlorine gas ?
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chlorine has 35.5 atomic weight and has 2 molecules
so,
Molecular weight of chlorine is
35.5 ×2= 71
71 g of Cl2 = 1 mole of Cl2
therefore, 20g of Cl2= 20÷ 71= 3.55 moles
so,
Molecular weight of chlorine is
35.5 ×2= 71
71 g of Cl2 = 1 mole of Cl2
therefore, 20g of Cl2= 20÷ 71= 3.55 moles
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