- Water: 4.184J/g・c
- Aluminum: 0.897J/g・c
- Brass: 0.385J/g・c
- Copper: 0.385J/g・c
- Lead: 0.129J/g・c
- Stainless Steel: 0.490J/g・c
- Zinc: 0.390J/g・c
- m= mass of metal/water
- c= specific heat
- ΔT= temperature change
- Q= heat
Procedure:
- Find mass of metals and put on a string.
- Weigh styrofoam cup.
- Fill styrofoam cup with 100mL of distilled room teperature water.
- Measure temperature of the water.
- Fill beaker with 150mL of distilled room temperature water.
- Weigh syrofoam cup with water in it.
- Heat the beaker of water on a hot plate.
- Tie string of metals to ring stand, and let sit in heated beaker of water.
- Let the water in beaker come to a deep boil.
- Measure the temperature of the boiling water.
- When the boiling is adequate and steam is being let off, cut the string with metals, and place in the styrofoam cup and place the lid on top.
- Measure the temperature of the water in the styrofoam cup once the metal has cooled.
- Mass of metals alone: 26.55g
- Mass of styrofoam cup: 8.002g
- Mass of styrofoam cup with water: 92.76g
- Temperature of water in beaker: 13.4°c
- Temperature of water in styrofoam cup: 12.9°c
- Temperature of heated water: 85°c
- Temperature of water in strofoam cup with metal: 14.8°c/14.9°c
First we find the specific heat of the water:
- Q=mcΔT
- Q=(92.76g-8.002g)(4.184)(14.8°c-13.4°c)
- Q=(84.758g)(4.184)(1.4°c)
- Q=496.478J
- Q=mcΔT
- 496.478J=(26.55g)c(85°c-14.8°c)
- 496.478J=(26.55g)c(70.2°c)
- c=0.266J/g・c
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