# Physics 20

posted by Tamai

1. How much heat energy is required to change 500 grams of water at 100 degrees Celsius to steam at 100 degrees Celsius?

2. How much energy is lost if 7kg of water is cooled from 46 degrees Celsius to 2 degrees Celsius?

3. How much energy is gained when a 300g piece of ice at -25 degrees Celsius is changed to steam at 155 degrees Celsius?

4. A 30 metre steel column in a building is constructed at 20 degrees Celsius. What will the length of the column be at -43 degrees Celsius?

5. An unknown amount of water at 100 degrees Celsius is mixed with 200g of water at 20 degrees Celsius. The final temperature of the solution is 30 degrees Celsius. what is the unknown amount of water?

1. shay

1. How much heat energy is required to change 500 grams of water at 100 degrees Celsius to steam at 100 degrees Celsius

2. Anonymous

30

## Similar Questions

1. ### 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 …
2. ### Chemistry

"Energy is released when 100 kg of steam at 150 degrees Celsius and standard pressure changes to water at 60 degrees Celsius. Calculate the total energy change". I used q=mct to find the energy required to change to 100 degrees Celsius. …
3. ### Physics

Thank you for any help and assistance. Here is the question/problem: Because of the pressure inside a popcorn kernel, water does not vaporize at 100 degrees Celsius. Instead, it stays liquid until its temperature is about 175 degrees …
4. ### Chemistry

Calculate the joules of energy involved when 11 grams of water at 10.0 degrees Celsius cools and then freezes at 0.0 degrees Celsius. How many kilocalories are required to raise the temperature of 305 gtams silver from 30 degrees Celsius …
5. ### physical science

How much heat must be added to 1.0kg of steam at 100 degrees Celsius to convert it to steam at 110 degrees Celsius?
6. ### Physics

How much ice at 0 degrees celsius can be melted with 1kg of steam at 100 degrees celsius, assuming no loss of energy to the surroundings?
7. ### Physics

Please Help! I am having difficulties grasping these concepts. Explain please! 1. How much heat energy is required to change 500 grams of water at 100 degrees Celsius to steam at 100 degrees Celsius?
8. ### Chemistry

how much heat is absorbed when 63.7 grams of water at 100 degrees Celsius is converted to steam at 100 degrees Celsius?
9. ### Chemistry

How much energy in kJ is needed to heat 7.0L of water from35 degrees Fahrenheit to boiling point 100 degrees Celsius. If the density of water is 1.0g/cm^3 and the heat capacity of water is Cp= 4.184J/g degrees Celsius
10. ### Physics

How much heat must be added to 1-kg of 0 degrees Celsius water to turn it into water at 50 degrees Celsius?

More Similar Questions