What Mass of Propane, C₃H₈(g),Must Be Burned to Supply 2580

question 141

Multiple Choice

What mass of propane, C₃H₈(g) ,Must be burned to supply 2580 kJ of heat? The standard enthalpy of combustion of propane at 298 K is -2220 kJ.mol^-1

• A) 25.6 g
• B) 51.2 g
• C) 102 g
• D) 75.9 g
• E) 37.9 g

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Definitions:

Fixed Expenses

Costs that do not vary with the level of production or sales, such as rent, salaries, and insurance.

Residual Income

The amount of income that exceeds the minimum rate of return on a project or investment.

Required Rate Of Return

The minimum percentage return an investor expects to achieve from an investment to make it worthwhile, considering the risk.

Contribution Margin Ratio

The percentage of each sales dollar that remains after deducting variable costs, used to cover fixed costs and provide profit.