Answer:
The starting temperature of the nickel sheet is 158.16 °C
Explanation:
Step 1: Data given
Mass of nickel = 10.0 grams
Mass of water = 20.0 grams
Cp of water = 4.184 J/g°C
Cp of nickel = 0.440 J/g°C
Initial temperature of water = 18.0 °C
Final temperature of water ( and nickel) = 25.0 °C
Initial temperature of Nickel = TO BE DETERMINED
Step 2: Calculate the starting temperature of nickel
Qgained = -Qlost
Qnickel = -Q water
Q =m*c*ΔT
with m = mass (in grams)
with c = the specific heat capacity (in J/g°C)
with ΔT = The change in temperature = T2 -T1 (in °C)
- Qnickel = Qwater
-10.0g * 0.440 J/g°C* ΔT = 20.0g * 4.184 J/g°C *( 25.0-18°C)
4.4 * ΔT = -585.76
ΔT = -133.13
ΔT =T2 -T1
-133.13 = 25.0 - T1
T1 = 25 + 133.16 = 158.16 °C
The starting temperature of the nickel sheet is 158.16 °C
