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Q: How much heat is lost when 640 g piece of copper cools from 375 celsius to 26 celsius?
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Is 25 degree Celsius considered cool?

calulate the amount of heat released when 25 gram of water at 25 degrees Celsius cools to 0.0 degrees celsius


How many joules of heat are necessary to raise temperature of 125g of copper from 25 degrees celsius to 300degrees celsius?

The answer is 53,683 kJ.


If you tie piece of copper wire a end of a exhaust.. what will happen?

If a person ties a piece of copper wire at the end of the exhaust pipe on a vehicle the copper is going to heat up. When the copper heats up it will turn a rainbow of colors.


How much heat must be removed from a 200 g block of copper to lower its temperature from 150 celsius to 30 celsius?

0.385 Joules/Gram Celsius is the specific heat of copper. So, q(Joules) = mass * specific heat * change in temperature q = (200 g Cu)(0.385 J/gC)(30 C - 150 C) = - 9240 Joules -------------------------amount of heat dissipation ( answer can be positive )


If you used nitric acid to dissolve copper how could you remove the copper nitrate?

Heat the liquid to boil off excess water and the copper nitrate will crystalise out of the solution as it cools. Then filter to separate the crystals from the liquid.


What is the mass in grams of a piece of copper that released 125 calories when cooled from 100 degrees Celsius to 25 point 3 degrees Celsius the specific of copper is 00924 cal per g x degrees Celsius?

Q=m s dT m = s dT/Q = 0.00924 X (100-25.3)/125 = 0.0055122 g


If a piece of iron with a temperature of 300 degrees celsius is dropped into a gallon of water with a temperature of 25 degrees Celsius heat will?

heat will flow from the iron to the water until both are the same temperature


How much heat energy will be lost by a 200 gram mass of water as it cools from 40 degree Celsius to 35 degree Celsius?

Assuming the change takes place under the pressure of 1 atmosphere, the heat lost will be 1000 calories or 1 kCal.


How many joules of heat are given out when a piece of iron of mass 50grammes and specific heat capacity of 400joules cool from 80 degrees Celsius to 20 degree Celsius?

Where are you getting this specific heat number. With the other numbers there is no cancellation.


How much heat is lost by water as 0.250kg cools from 35 degrees Celsius to 20 degrees Celsius?

0.450 kg = 450 grams q = mass * specific heat * change in temp. q = (450 grams)(4.180 J/gC)(20 C - 35C) = - 2.8 X 10^4 Joules of heat lost


What is the heat lost from a 10g piece of copper that goes 70C to 40C and has the specific heat of 11?

3.3 Joule (it follows the equation: Heat loss=mass*specific heat*temp. difference)


Water has a temp of 4.184 and copper has a temp of 0.387. Does it takes more heat to raise the temp of the copper molecule?

These are not temperature numbers but specific heat numbers. They mean that it takes 4.184 Joules and 0.387 Joules respectively to raise water and copper of one gram by one degree celsius. So, as you can see, it takes a lot more heat to raise the temperature of water than it does of copper. Water has a very high specific heat.