Asked by Mya
How much energy is required to change 25 g of ice at -20 degrees C into water at 20 degrees C?
Answers
Answered by
DrBob222
q1 = energy to move T of ice @ -20 C to zero C.
q1 = mass ice x specific heat ice x (Tfinal-Tinitial) where Tfinal is zero C and Tinitial is -20.
q2 = energy to melt ice @ zero to water @ zero C.
q2 = mass ice x delta H fusion = ?
q3 = energy to move T of water @ zero C to 20 C.
q3 = mass water x specific heat water x (Tfinal-Tinitial) where Tfinal is 20 and Tinitial is zero C.
Total energy Qtotal = q1 + q2 + q3
q1 = mass ice x specific heat ice x (Tfinal-Tinitial) where Tfinal is zero C and Tinitial is -20.
q2 = energy to melt ice @ zero to water @ zero C.
q2 = mass ice x delta H fusion = ?
q3 = energy to move T of water @ zero C to 20 C.
q3 = mass water x specific heat water x (Tfinal-Tinitial) where Tfinal is 20 and Tinitial is zero C.
Total energy Qtotal = q1 + q2 + q3
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.