What volume is occupied by a $5.0 \cdot g$ $5.0g$ mass of ammonia that is placed in a piston and allowed to expand against a pressure of $740 \cdot m m \cdot H g$ $740mm*Hg$ at a temperature of $50$ $50$ $^{\circ} C$ $""^@C$ ?

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What volume is occupied by a $5.0 \cdot g$ $5.0g$ mass of ammonia that is placed in a piston and allowed to expand against a pressure of $740 \cdot m m \cdot H g$ $740mm*Hg$ at a temperature of $50$ $50$ $^{\circ} C$ $""^@C$ ?

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Answer 1 · 2017-09-15T06:13:33

So we conceive that in this experiment, a mass of condensed ammonia is enclosed in a piston, which is allowed to expand against a pressure of $740 \cdot m m \cdot H g$ $740*mm*Hg$ and a temperature of $50$ $50$ $^{\circ} C$ $""^@C$ .

Explanation:

We use the old Ideal Gas equation.....

$V = \frac{n R T}{P} = \frac{\frac{5.0 \cdot g}{17.03 \cdot g \cdot m o l^{- 1}} \times 0.0821 \cdot \frac{L \cdot a t m}{K \cdot m o l} \times 323 \cdot K}{\frac{740 \cdot m m \cdot H g}{760 \cdot m m \cdot H g \cdot a t m^{- 1}}}$ $V=(nRT)/P=((5.0*g)/(17.03*g*mol^-1)xx0.0821*(L*atm)/(K*mol)xx323*K)/((740*mm*Hg)/(760*mm*Hg*atm^-1))$

$≅ 8 \cdot L$ $~=8*L$ ......

Do the units in the expression cancel out to give an answer in litres? If they do not, then we have made a mistake.

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What volume is occupied by a $5.0 \cdot g$ $5.0g$ mass of ammonia that is placed in a piston and allowed to expand against a pressure of $740 \cdot m m \cdot H g$ $740mm*Hg$ at a temperature of $50$ $50$ $^{\circ} C$ $""^@C$ ?

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What volume is occupied by a 5.0⋅g5.0*g mass of ammonia that is placed in a piston and allowed to expand against a pressure of 740⋅mm⋅Hg740*mm*Hg at a temperature of 5050 ∘C""^@C?

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Explanation:

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What volume is occupied by a $5.0 \cdot g$ $5.0g$ mass of ammonia that is placed in a piston and allowed to expand against a pressure of $740 \cdot m m \cdot H g$ $740mm*Hg$ at a temperature of $50$ $50$ $^{\circ} C$ $""^@C$ ?