Question

Calculate the volume of 85g of Ammonia at STP ? (Molecular mass -17)​

Answer 1

Given :-

• Mass of Ammonia = 85 g

• Molecular Mass = 17 g

To Find :-

• Volume of Ammonia at STP = ?

Formula :-

$\\ \bullet \quad \underline{ \boxed{ \sf n = \dfrac{vol. _{(L)} }{22.4} }} \bigstar$

$\\ \bullet \quad \underline{ \boxed{ \sf n = \dfrac{given \: mass}{molecular \: mass} }} \bigstar$

Solution :-

Equate both the formulas to find the required value.

$\\ \quad \longrightarrow \quad \sf \dfrac{ vol._{(L)} }{22.4} = \dfrac{given \: weight \: }{molecular \: weight}$

$\\ \quad \longrightarrow \quad \sf \dfrac{ vol._{(L)} }{22.4} = \dfrac{85}{17}$

$\\ \quad \longrightarrow \quad \sf \dfrac{ vol._{(L)} }{22.4} = 5$

$\\ \quad \therefore \quad \boxed{\boxed{\sf vol._{(L)} = 112 \: L}} \bigstar$

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