Solution-Molecular weight of gas, *Percentages do not add

Molecular weight of gas

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Reference no: EM131345436

The major gases that comprise the Earth's atmosphere are shown in Table below. The properties of the gases (ignoring water vapor, which is variable) in the atmosphere remain virtually constant to a high of about 25km.

Gas	Volume (%)	Molecular Weight (approximate)	Weight %
Nitrogen	78.000	28	75.00
Oxygen	21.000	32	23.00
Argon	00.930	40	1.3
Carbon dioxide	00.035	44	0.05
Average Atmosphere	100.000	29	100.00

*Percentages do not add up to 100 due to rounding, approximation, and ignoring water vapor and all minor and trace gases.

*Weight % is found by multiplying the volume (%) by the molecular weight of that gas and dividing by the average molecular weight of the atmosphere.

Weighting the Atmosphere

At sea level, the weight of 1 cm²of air is approximately 1 kilogram. This value, 1kg/ cm²is also known as the atmospheric pressure. For this analysis, we will assume a featureless Earth without continents. This will simplify but not significantly alters your calculations.

Question 2: How much does the atmosphere weigh over each square meter of surface? Express this in tonnes (units of 1000 kg). Recall the conversion factors: 10⁴cm² = 1m^2, 1 tonne = 1000 kg = 10⁶g.

Reference no: EM131345436

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Molecular weight of gas

Reference no: EM131345436

Reference no: EM131345436

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