A noble gas is placed in a 10.0 liter container. The noble gas has a mass of 25.25 g, the pressure is 3.05 atm, and the temperature is 24°C. Find the molar mass and symbol for the gas. ?

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A noble gas is placed in a 10.0 liter container. The noble gas has a mass of 25.25 g, the pressure is 3.05 atm, and the temperature is 24°C. Find the molar mass and symbol for the gas. ?

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Answer 1 · 2018-05-14T20:09:15

I makes it..... $neon gas, Ne..........$ $"neon gas, Ne.........."$

Explanation:

We work out the molar mass of the gas... $P V = n R T$ $PV=nRT$ $=$ $=$ $\frac{mass of gas}{molar mass of gas} \times 0.0821 \cdot \frac{L \cdot a t m}{K \cdot m o l} \times 297.15 \cdot K .$ $"mass of gas"/"molar mass of gas"xx0.0821*(L*atm)/(K*mol)xx297.15*K.$

And so.... $molar mass of gas = \frac{mass of gas}{P \times V} \times 0.0821 \cdot \frac{L \cdot a t m}{K \cdot m o l} \times 297.15 \cdot K$ $"molar mass of gas"="mass of gas"/(PxxV)xx0.0821*(L*atm)/(K*mol)xx297.15*K$

$=(25.25*g)/(3.05*cancel(atm)xx10.0*cancelL)xx0.0821*cancel(L*atm)/(cancelK*mol)xx297.15*cancelK$

$=20.2*g*mol^-1$

And this molecular mass is precisely consistent with that of neon gas.... I hope the question drew on actual data....the fit makes me suspicious.....

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A noble gas is placed in a 10.0 liter container. The noble gas has a mass of 25.25 g, the pressure is 3.05 atm, and the temperature is 24°C. Find the molar mass and symbol for the gas. ?

1 Answer

Explanation:

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