Question

How much energy would it take to melt 1 aluminum soda can if the can starts out at 20°C, melts at 660°C, and has a mass of 14 g?

Answer 1

8,100 J

Explanation:

`q=mcDeltaT`

`T_i=20`°C
`T_f=660`°C
`DeltaT=T_f-T_i=660`°C`-20`°C`=640`°C`=640`K
`m=14`g
`c=0.900`J/g*K

(Since no specific heat capacity is provided, we can assume that the can is pure Aluminum and look up the specific heat capacity of Aluminum.)

`q=(14`g`)(0.900`J/g*K`)(640`K`)=8,100`J