Academic Integrity: tutoring, explanations, and feedback — we don’t complete graded work or submit on a student’s behalf.

How many kilojoules of energy are required to change 50.0g of ethyl alcohol from

ID: 856324 • Letter: H

Question

How many kilojoules of energy are required to change 50.0g of ethyl alcohol from 60.0C to vapor at 78.4C? The specific heat of ethyl alcohol is 2.138J/gC. The answer is 44.8 kJ Can someone show me how to get this answer? How many kilojoules of energy are required to change 50.0g of ethyl alcohol from 60.0C to vapor at 78.4C? The specific heat of ethyl alcohol is 2.138J/gC. The answer is 44.8 kJ Can someone show me how to get this answer? The answer is 44.8 kJ Can someone show me how to get this answer?

Explanation / Answer

E = mass x specific heat capacity x change in temperature

E= 50 * 2.138 * (78.4-60.0) = 1966.96 J = 1.96696 kJ

THIS IS THE CORRECT ANSWER