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How is the Hvap used to calculate the mass of liquid boiled by 1 kJ of energy?A.1kJ 1/Hvap g/mol liquidB.1kJ 1/Hvap mol/g liquidC.1kJ Hvap mol/g liquidD.1kJ Hvap g/mol liquidSUBMITarrow_backPREVIOUS

Question

How is the Hvap used to calculate the mass of liquid boiled by 1 kJ of energy?A.1kJ 1/Hvap g/mol liquidB.1kJ 1/Hvap mol/g liquidC.1kJ Hvap mol/g liquidD.1kJ Hvap g/mol liquidSUBMITarrow_backPREVIOUS

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Solution

The heat of vaporization (Hvap) is used to calculate the mass of liquid boiled by 1 kJ of energy by using the formula:

Q = m * Hvap

Where: Q is the heat energy (in this case, 1 kJ), m is the mass of the substance (which we are trying to find), and Hvap is the heat of vaporization.

To isolate m, we rearrange the formula to:

m = Q / Hvap

So, the correct answer is A. 1kJ * 1/Hvap g/mol liquid. This is because 1 kJ of energy is used to boil the liquid and the Hvap is in the denominator as we are dividing the energy by the Hvap to get the mass. The units are g/mol as we are calculating the mass of the liquid.

This problem has been solved

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