# Physics

posted by .

A 100 kg steam boiler is made of steel and contains 200 kg of water at 5.00°C. How much heat is required to raise the temperature of both the boiler and water to 100°C?

The specific heat of Steel is 0.115kcal/kg°C. The specific heat of Water is 1.00kcal/kg°C

• Physics -

1 Cal = 4180 J.
Q = ΔU1 + ΔU2 =
=c1•m1 •ΔT + c2•m2 •ΔT =
= ΔT •(c1•m1 + c2•m2 ) =
= 95• (4180•0.115•100 + 4180•200)= =8.4•10^7 J

## Similar Questions

1. ### Chemistry

A 500kg steel boiler is used to convert 200kg of water into steam. Calculate the total energy required to heat both the steel and its' contents from 20.0°C to 100.0°C. The specific heat capacity of the steel is 0.528J/g°C. Heattotal= …
2. ### chemistry

What will be the final temperature of the water in an insulated container as the result of passing 5.00 g of steam [H2O(g)] at 100.0°C into 195.0 g of water at 20.0°C?
3. ### Physics

Spent steam from an electric generating plant leaves the turbines at 120.0 degrees Celsius and is cooled to 90.0 degrees Celsuius liquid water by water from a cooling tower in a heat exchanger. How much heat is removed by the cooling …
4. ### Physics

A steam engine's boiler completely converts 155 kg of water to steam. This process involves the transfer of 3.5 x 10^8 J by heat. If steam escaping a safety valve does 1.76 x 10^8 J of work against the outside atmosphere, what is the …
5. ### Chemistry

In a large building, oil is used in a steam boiler heating system. The combustion of 1.0 pound of oil provides 2.4*10^7 J. How many kg of oil are needed to heat 100 kg of water from 22 to 100 degrees C?
6. ### science

Which of the following would require more energy to heat it from 10°C to 20°C?
7. ### Physics

In a container of negligible mass, 0.100 kg of steam at 110°C and atmospheric pressure is added to 1.00 kg of water at 20.0°C. (a) If no heat is lost to the surroundings, what is the final temperature of the system?
8. ### chemistry

In a large building, oil is used in a steam boiler heating system. The combustion of 1.0 lb of oil provides 2.2×107J. Part A How many kilograms of oil are needed to heat 110 kg of water from 24 ∘C to 100∘C?
9. ### physics

A steam boiler is made of steel and weighs 900lb. The boiler contains 400lb of water. How many Btu are required to raise the temperature of each from 42fahrenheit to 212fahrenheit?
10. ### Physics

Water of mass 200g and temperature 10digrees Celsius is put in a copper calorimeter of mass 80g. Steam from boiler at a normal pressure is passed into the calorimeter for sometime. The total mass of the calorimeter and contents is …

More Similar Questions