Two Balloons Are at the Same Temperature and Pressure, and Contain

question 79

Multiple Choice

Two balloons are at the same temperature and pressure, and contain equal volumes of gas, but one is floating, and the other is not. The reason for this behavior is that:

• A)the balloon that is not floating has the molecules more closely spaced than the other.
• B)the balloon that is not floating has a gas with a higher molar mass than that of air.
• C)the balloon that is floating has molecules with more kinetic energy.
• D)the balloon that is not floating has molecules that have slowed down, since it was filled before the floating balloon.
• E)the balloon that is floating has a more dense gas than the one that is not floating, so it holds up the balloon better.

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Definitions:

Compound Annual Rate

The rate at which an investment grows annually when interest is reinvested to earn additional interest.

Nominal Rate

The interest rate before adjustments for inflation or other factors, often referred to as the stated or face interest rate.

Compounded Quarterly

A method of calculating interest where the accrued interest is added to the principal sum every quarter, thus increasing the base for the next interest calculation.

Nominal Rate

The quoted interest rate on a loan or investment, not adjusting for the effect of compounding or inflation.