A 50-Liter Gas Tank Holds 1

question 30

Multiple Choice

A 5.0-liter gas tank holds 1.4 moles of helium (He) and 0.70 moles of oxygen (O₂) , at a temperature of 260 K. The atomic masses of helium and oxygen are 4.0 g/mol and 16.0 g/mol, respectively. Avogadro's number is 6.022 × 10²³ molecules/mol and the Boltzmann constant is 1.38 × 10^-23 J/K. The total random translational kinetic energy of the gas in the tank is closest to

• A) 6.8 kJ.
• B) 6.1 kJ.
• C) 7.6 kJ.
• D) 8.3 kJ.
• E) 9.1 kJ.

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Definitions:

Layaway Plan

A purchasing agreement that allows a buyer to pay for goods in installments and receive the goods upon full payment.

APR

APR, or Annual Percentage Rate, represents the yearly interest rate charged on borrowed money, encompassing both the nominal rate and additional costs associated with the loan.

APR

Annual Percentage Rate, which measures the cost of credit, including interest and any other charges, expressed as a yearly interest rate.

Interest

The cost of borrowing money, typically expressed as a percentage, charged by lenders to borrowers.