In an Experiment, 0 $\degree$ C Is Quickly Transferred to a 0

question 153

Multiple Choice

In an experiment, 0.250 kg water at 95.0 $\degree$ C is quickly transferred to a 0.500 kg alumina crucible at 25 $\degree$ C.The final temperature comes to 61.8 $\degree$ C.What is the approximate specific heat capacity of alumina? [c_p(water) = 4.18 J/(g . $\degree$ C) ]

• A)7.94 J/(g .\(\degree\)C)
• B)5.17 J/(g . \(\degree\)C)
• C)1.89 J/(g. \(\degree\)C)
• D)0.664 J/(g . \(\degree\)C)
• E)2.32 J/(g . \(\degree\)C)

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Definitions:

Marginal Tax Rate

The marginal tax rate is the rate at which an additional dollar of income is taxed, representing the fraction of the last dollar earned that is paid in taxes.

Required Rate of Return

The lowest expected gain an investor foresees from putting money into a specific asset, taking into account the asset’s level of risk.

Financial Break-Even

The point at which total revenues are equal to total financial costs, resulting in zero net income or loss.

Salvage Value

The estimated resale value of an asset at the end of its useful life.