# The number of moles of hydrogen molecules required to produce 20 moles of ammonia through Haber's process is: 20 30 40

Mole Concept -

One mole is the amount of a substance that contains as many particles or entities as there are atoms in exactly 12 g (or 0.012 kg) of the 12C isotope.

- wherein

one mole = 6.0221367 X 1023

Law of multiple proportion -

If two elements can combine to form more than one compund, the masses of one element that combines with a fixed mass of other element are in ratio of small whole numbers.

- wherein

masses of oxygen combining with a fixed mass of hydrogen have ratio 16:32 => 1:2

Law of conservation of mass -

Matter can neither be created nor destroyed.

- wherein

Mass is balanced on both sides

The reaction is:

For 20 moles of ammonia, the balanced equation is:

30 moles of H2 are required.

Option 3 is correct.

30

40

30

30

30

D

30

D

30

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