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Paul [167]
2 years ago
11

13. What does 2n^2 stand for?

Chemistry
1 answer:
Sever21 [200]2 years ago
4 0

Answer:

2n² is a formula that determines that the maximum number of electrons should be accommodated in a particular shell.

Explanation:

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What we're looking for here is the gas sample's molar mass given its mass, pressure, volume, and temperature. Recalling the gas law, we have

PV = nRT or
n = \frac{PV}{RT}

where R is <span>0.08206 L atm / mol K, P is the given pressure, T is the temperature, and V is the volume.

Before applying the values given, it is important to make sure that they are to be converted to have consistent units with that of R. 
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Thus, we have

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Now, applying these converted values into the gas law, we have

n = \frac{(0.968 atm)(0.250 L)}{(0.08206 L.atm/mol.K)(301.15 K)}
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Given that the mass of the sample is 0.430 g, we have

molar mass = \frac{mass}{number of moles} 
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Thus, the gas sample has a molar mass of 43.9 g/mol.
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Matter is every object that stands on this Earth
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