-CHIARELLAMANSILLA I Activities and Due Dates I On-line Assignment 6 Set o/12 Pr

Question

-CHIARELLAMANSILLA I Activities and Due Dates I On-line Assignment 6 Set o/12 Print Calculator Periodic Table ion 1 of 12 Sapling Learning Which of the following statements are evidence that gases do not always behave ideally? Check all that apply It is impossible to compress a gas enough so that it takes up no volume. At 4 K and 1 atm, helium is a liquid CO2 gas becomes dry ice (solid CO2) at 1 atm and -78.5 C. When two gases are mixed, they follow Dalton's law of partial pressures. A Previous 2 check Answer 0 Next

Explanation / Answer

1. First statement shows that! it is impossible to compress to zero volume. Which means the gas molecules they occupy some volume, which is contrary to ideal gas assumption.

Both second and third statements state that the gases become liquids at very low temperatures. Which means they have intermolecular forces. Which is actually is real gas behavior. Not ideal gas.

Fourth statement is for ideal gases only.

2. P1 V1= P2 V2==> V2= 21.0 x 11.0 /1.0 = 231.0L

Final volume must be 231.0L

Here 11.0L volume will be of container.

The balloon volume will be remaining 220.0L

3. 2 moles of octane gives 16 moles of CO2 . Hence, 8x603 moles of CO2

V= nTR/P= 8x 603x 286 x 0.082057/ 0.995= 113,780L

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