Physical Science

posted by .

A 100 kg sample of a metal is cooled from 100°C to 20°C by removing 20 kcal of heat. Calculate the specific heat capacity of the metal.

• Physical Science -

20kcal=100kg*c*80 C

c=20k/(100k*8O)=.2/80=.02/8
= .0025 cal/g-C

• Physical Science -

20 kcal =83736 J
Q=cmΔT

c=Q/mΔT

Similar Questions

1. chemistry

I am in need of help about this specific heat question. A 100.0g sample of aluminum released 1680 calories when cooled from 100.0 degrees C ti 20.0 degrees C. What is the specific heat of the metal?
2. physical science

Lead is a soft, dense metal with a specific heat of 0.028 kcal/kg·C°, a melting point of 328.0°C, and a heat of fusion of 5.5 kcal/kg. How much heat must be provided to melt a 202.2 kg sample of lead with a temperature of 20.0°C?
3. Science/C

A 250 gram sample of metal is warmed from 50°C to 90°C when 100 calories of heat are added. What is he specific heat capacity of the metal?
4. Physical Science

A 100 kg sample of a metal is cooled from 100°C to 20°C by removing 20 kcal of heat. Calculate the specific heat capacity of the metal.
5. chemistry

A 115 g piece of metal, initially at 60.0 °C, is submerged into 100.0 g of water at 25.0 °C. At thermal equilibrium, this mixture had a final temperature of 27.0 °C. The specific heat capacity of water is 4.18 (J/g°C). Use this …
6. chemistry

3. Based on your answer in question 2, determine the percent error of your calculated specific heat capacity value of your unknown metal using the specific heat capacities of known metals below. Metal Specific Heat Capacity Nickel …
7. Science

A 100 kg sample of a metal is cooled from 100°C to 20°C by removing 20 kcal of heat. Calculate the specific heat capacity of the metal.
8. chemistry

A 37.0 g mass of a metal was heated to 100°C and then plunged into 74 g of water at 24.0°C. The temperature of the resulting mixture became 28.0°C. (a) How many joules did the water absorb?
9. Chemistry

An unknown metal with a mass of 260 g has a heat capacity of 100 J/oC. What is the specific heat of the metal?
10. physics

A 13.0 gram sample of an unknown metal at 30.0*C is placed in a Styrofoam cup containing 50.0 grams of water at 90.0*C.The water cools down and the metal warms up until thermal equilibrium is achieved at 87.0*C.Assuming all the heat …

More Similar Questions