The number of moles that are present in 0.75 g of ammonia is 0.04 moles.
Relation between the mass and moles of any substance will be represented as:
n = W/M, where
On putting all these values, we can calculate the moles of ammonia as:
n = 0.75g / 17g/mol = 0.04 mole
Hence required moles of ammonia is 0.04 moles.
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