Water heater In a water heater, tap water with the temperature 10 degrees celcius is heated...

Water heater

In a water heater, tap water with the temperature 10 degrees celcius is heated to 60 degrees celcius. For a shower, a total of 20 litres of water is used. Water from the water heater is mixed with tap water to reach the temperature 35 degrees celcius when one showers.

How much ENERGY is needed to heat 10 litres of water from 10 celcius to 60 celcius?
How much EXERGY is needed to heat 10 litres of water from 10 celcius to 60 celcius?
How much ENERGY is needed to heat 20 litres of water from 10 celcius to 35 celcius?
How much EXERGY is needed to heat 20 litres of water from 10 celcius to 35 celcius?
What is the change in entropy when 10 litres of water with the temperature 10 celcius is mixed with 10 litres of water with the temperature 60 celcius?

Expert Solution

genius_generous answered 1 year ago

A sample of metal with a mass of 350 g is heated to 100 degrees celcius...

A sample of metal with a mass of 350 g is heated to 100 degrees celcius and dropped into 400 g of water at 21.4 degrees celcius. The temp of the water rises to 28.0 celcius. Assume no heat is lost to the environment. What is the amount of heat gained? What is the specific heat of the metal?

At 80 degrees celcius ,15g of KCl and KCLO3 will dissolve in 100g of water. suppose...

At 80 degrees celcius ,15g of KCl and KCLO3 will dissolve in 100g of water. suppose yo mad e a solution containing 15g of KCl and 15g of KCLO3 in 100g of water and heated it to 80 degrees celcius.If you slowly cooled this solution to 0 degree celc`ius, explain what would happen.

is 220 grams sugar in 100 grams water at 40 degrees celcius supersaturated?

A partially filled (plastic) kettle is used to boil water. The kettle contains tap (temperature) water...

A partially filled (plastic) kettle is used to boil water. The kettle contains tap (temperature) water before it is switched on. If the thermostat to switch off the kettle when it boils is faulty: Q2d: Explain the solution strategy which would allow you to calculate the time needed to bring water to the boil. Q2a: Detail all the assumptions needed to arrive at the solution, whether they relate to equations used (i.e., the theoretical basis) or any values which must...

1a) The system is at 25 degrees Celsius and the surroundings are at degrees Celcius. The...

1a) The system is at 25 degrees Celsius and the surroundings are at degrees Celcius. The system is a closed system. a) thermal energy will flow from system to surrounding b) thermal energy will flow from surrounding to system c) there will be no net flow of thermal energy 1b) The system is at 25 degrees Celsius and the surroundings are at 0 degrees Celcius. The system is an isolated system a) thermal energy will flow from system to surrounding...

You place 20g of ice initially at -10 degrees celcius and 200g of an unknown substance...

You place 20g of ice initially at -10 degrees celcius and 200g of an unknown substance initially at 90 degrees celcius together in an insukated container. You find that the final temperature of the system is 34.6 degrees celcius and note that the unknown substance did not change phase. Given that the specific heat of ice is 2.04 kJ/kg•K, the specific heat of liquid water is 4.18 kJ/kg•K, and the heat of fusion of water is 334 kJ/kg, find the...

A gallon of water is heated-up from room temperature (20oC) to its boiling temperature of 100...

A gallon of water is heated-up from room temperature (20oC) to its boiling temperature of 100 oC at atmospheric pressure. The water is further heated and completely transforms into vapor at which point the heating is stopped. What is the temperature of the steam? A)T=100oC B) T > 100 oC C) T < 100 oC

Question

Water heater In a water heater, tap water with the temperature 10 degrees celcius is heated...

Solutions

Expert Solution

Related Solutions