Gram atom of hydrogen in 5.5g of water
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Explanation:
What are the gram atoms of hydrogen in 5.5g of H2?
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Mass in grams of Hydrogen = 5.5 g
Molar mass of Hydrogen = 2 g/mol
First we calculate moles
No of moles = (mass in grams)/molar mass
No of moles = 5.5/2
No of moles = 2.75 mol
Then calculate no of molecules
No of molecules = (no of moles) x Avogadro's number
No of molecules = 2.75 x 6.02x10^23
No of molecules = 16.5x19^23
Then calculate no of atoms of Hydrogen
No of molecules = 16.5x19^23
And each molecule contains 2 atoms of Hydrogen
So
No of atoms of Hydrogen = (16.5x19^23) x 2
No of atoms of Hydrogen = 33.11x10^23
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