calculate the number of moles in the following masses- (i) 7.85g of Fe (ii) 7.9mg of Ca
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Hey friend, ☺ here is ur answer __________________________
1. Given mass = 7.85 g
Molar mass of Fe = 55.8 g
No . of moles = given mass / molar mass = 7.85 / 55.8 = 0.14 moles
2. Given mass = 7.9 mg = 7.9 × 10^-3 g = 0.0079 g
Molar mass of Ca = 40 g
No. of moles = given mass / molar mass = 0.0079/ 40 = 0.0001975 moles.
hope this helps u...
1. Given mass = 7.85 g
Molar mass of Fe = 55.8 g
No . of moles = given mass / molar mass = 7.85 / 55.8 = 0.14 moles
2. Given mass = 7.9 mg = 7.9 × 10^-3 g = 0.0079 g
Molar mass of Ca = 40 g
No. of moles = given mass / molar mass = 0.0079/ 40 = 0.0001975 moles.
hope this helps u...
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