Chemistry, asked by badcfe, 18 days ago

How much hydrogen will be obtained from a mixture containing 8 g of LiH and 21g of CaH2

Answers

Answered by priyankakanojiya503
1

Explanation:

CaH

2

+2H

2

O→Ca(OH)

2

+2H

2

The molar mass of CaH

2

=40+2=42 g/mol.

The number of moles of CaH

2

=

42g/mol

42g

=1mol

1 mole of CaH

2

will liberate 2 moles of H

2

The molar mass of H

2

=2 g/mol

The mass of H

2

gas obtained =2g/mol×1mol=2g

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