 #1
Homework Statement:

The melting point of a solid is 90 C. What is the heat required to change 2.5 kg of this solid at 30 C to a liquid
The specific heat of the solid is (390 j/KG.C) and its heat fusion is (4000 J/KG)
Relevant Equations:

Q=mC ΔT heat capacity
Q=mHf heat of fusion
Q1=2.5(390)(9030) =58500
Q2=2.5(4000) = 10000
Qtotal = 58500+10000
Q=68500
=6.8x10^4
my teacher sent this as a homework but the options were
4.9x10^4 J
1x10^4 J
6.8x10^5 J
5.9x10^4 J
im confused is is this a typo or did i do something wrong
Q2=2.5(4000) = 10000
Qtotal = 58500+10000
Q=68500
=6.8x10^4
my teacher sent this as a homework but the options were
4.9x10^4 J
1x10^4 J
6.8x10^5 J
5.9x10^4 J
im confused is is this a typo or did i do something wrong