Question

3.49g of ammonia at STP occupies volume of 4.48 dm3 calculate molar mass of ammonia? ​

Answer 1

Answer:

Volume = 4.48 dm3 = 4.48 L

gram molecular mass = 22.4 L at STP

so, 4.48 L of ammonia gas weighs= 3.49g

22.4 L of ammonia weighs = 22.4 x 3.49 /4.48= 17.45 g

Answer 2

Answer:

This is also referred to as standard molar volume. ... This means that 3.49 g of ammonia is 0.2 moles. Molar mass of ammonia = $\dfrac{3.49}{0.2}$ = 17.45 g. Therefore, the molar mass of ammonia is 17.45 g.

Explanation:

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