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Which of these gases will have the greatest density at the same specified temperature and pressure?
A. H2
B. CO 2
C. CCIF 3
D. C2H6
E. CF 4

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Answer:

Neon

The highest density among the inert gases is of Neon (Ne). This a factual data. Thus the highest density among given options is of Ne, as all the options are of inert gases.

Explanation:

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CClF3 will have the greatest density at the same specified temperature and pressure.

• It is known that one mole of a gas under the standard temperature and pressure occupied 22.4 L of volume.

Now, the density of each of the gas under the similar condition will be,

H2:

The molar mass is 2 and the volume is 22.4 L. The density is,

[tex]Density = \frac{mass}{volume}[/tex]

[tex]=\frac{2}{22.4} \\= 0.089 g/L[/tex]

CO2:

The molar mass is 44 and the volume is 22.4 L. Now the density is,

[tex]= \frac{44}{22.4} \\= 1.96 g/L[/tex]

CClF3:

The molar mass is 104.5 and the volume is 22.4 L. The density is,

[tex]=\frac{104.5}{22.4} \\= 4.665 g/L[/tex]

C2H6:

The molar mass is 30 and the volume is 22.4 L. The density is,

[tex]= \frac{30}{22.4} \\= 1.339 g/L[/tex]

•  CF4:

The molar mass is 88 and the volume is 22.4 L. The density is,

[tex]= \frac{88}{22.4} \\= 3.928 g/L[/tex]

Thus, CClF3 will have the greatest density at the same specified temperature and pressure.

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