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zheka24 [161]
3 years ago
9

The gas described in parts a and b has a mass of 1.66 g. the sample is most likely which monatomic gas?

Chemistry
2 answers:
nordsb [41]3 years ago
7 0
Mass of the gas m = 1.66 
The calculated temperature T = 273 + 20 = 293
 We have to calculate molar mass to determine the gas
 Molar Mass = mRT / PV
 M = (1.66 x 8.314 x 293) / (101.3 x 1000 x 0.001)
 M = 4043.76 / 101.3 = 39.92 g/mol
 So this gas has to be Argon Ar based on the molar mass.

PtichkaEL [24]3 years ago
6 0
Answer is: gas is argon (Ar).
Missing part of question find on internet:
part a: p(gas) = 1 atm, T(gas) = 20°C = 293,15 K.
part b: V(gas) = 1 L.
Ideal gas law: p·V = n·R·T or p·V = m/M·R·T.
R(universal gas constant) = 0,08206 L·atm<span>/mol·K.
</span>M = m·R·T÷p·V
M = 1,66 g·0,08206 L·atm<span>/mol·K</span>·293,15K÷(1 atm·1 L)
M = 39,9 g/mol (argon).

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Hope this answer can help you. Have a nice day!

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