q1 = heat needed to melt ice at 0C
q1 = mass ice x heat fusion = ?J
q2 = heat needed to raise T of liquid H2O from 0C to 85 C
q2 = mass H2O x specific heat H2O x (Tfinal-Tinitial) = ? J
Total q = q1 + q2 = ? in J.
Convert to kJ.
How many kilojoules are required to melt 15g of ice at 0 degrees C, and raise the temperature of the liquid that forms to 85 degrees C?
4 answers
Still don't understand !
5.01kj
5.33kj
10kj
5.33kj
10kj
Δ
Q
I
c
e
=
(
(
0.015
k
g
)
(
2108
J
k
g
º
C
)
(
0
º
C
−
15
º
C
)
)
Δ
Q
F
u
s
i
o
n
=
(
(
0.015
k
g
)
(
333
⋅
10
3
)
)
Δ
Q
T
o
t
a
l
=
(
(
0.015
k
g
)
(
2108
J
k
g
º
C
)
(
0
º
C
−
15
º
C
)
)
+
(
(
0.015
k
g
)
(
333
⋅
10
3
)
)
Δ
Q
T
o
t
a
l
=
−
473.3
J
+
4995
J
Q
I
c
e
=
(
(
0.015
k
g
)
(
2108
J
k
g
º
C
)
(
0
º
C
−
15
º
C
)
)
Δ
Q
F
u
s
i
o
n
=
(
(
0.015
k
g
)
(
333
⋅
10
3
)
)
Δ
Q
T
o
t
a
l
=
(
(
0.015
k
g
)
(
2108
J
k
g
º
C
)
(
0
º
C
−
15
º
C
)
)
+
(
(
0.015
k
g
)
(
333
⋅
10
3
)
)
Δ
Q
T
o
t
a
l
=
−
473.3
J
+
4995
J