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If 200g ice cube with an initial temperature of -12 degrees celsius is placed in 1 kg of warm water with an initial temperature of 40 degrees celsius If you ignore any heat losses to the environment?
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) The temperature of a sample of water changes from 10 and degC to 20 and degC when the water absorbs 100 calories of heat. What is the mass of the sample?
one calorie of heat is able to raise one gram of water one degree Celsius so 400 calories could raise 1g of water 400 degrees, so it would raise the 80g by(400/80) 5 degrees Celsius plus the initial temp of 10 degrees, the 80g of water would have a final temp of 15 degrees Celsius
A 15000 gram ball of lead is cooled to 22.5 degree celsius by losing 478 calories of heat. What was the initial temperature?
22.5319
What will the final temperature be if 688 calories of heat is released by 25 mL of water with an initial temperature of 80 degrees celsius?
Do some converting first. 688 calories (4.184 Joules/1 calorie) = 2878.592 Joules 25 ml of water = 25 grams q(Jolules) = mass * specific heat * (Temp. final - Temp. initial) 2878.592 Joules = 25 grams Water * 4.180 J/gC * (Temp Final - 80C ) 2878.592 Joiles = 104.5( Temp. Final) - 8360 11238.592 =104.5(Temp. Final) 107.55 Celsius Final Temperature ( call it 108 C )
If i have the initial and after temperature how would i be able to find the change in temperature?
You subtract the initial from the after, and the result is the change. If the initial temperature is 50º and the after is 70º, then the change is +20º.
Why the brass need to be immersed in the boiling water before place it in the calorimeter?
The brass needs to be immersed in the boiling water for a sufficient enough time that its temperature is the same as the boiling water, 100 degrees Celsius. That will be the initial temperature of the brass. After it is quickly placed in the calorimeter which will contain much cooler water, causing the brass to cool down and the water to heat up until the point where the temperature no longer changes. At that point the temperature of the brass is the same temperature as the water in the calorimeter, which is its final temperature of the brass.
How much heat must be added to 120g of water at an initial temperature at 60 degrees Celsius?
a-4800
Why can you assume the initial temperature of ice is 0 degrees Celsius?
Water freezes into ice at 0 degrees Celsius. Anything above that it will melt. Therefore ice must be 0 or below
A vessel and water have a equivalent mass of 4kg and are at 15 degrees Celsius.after a hot iron object of 2kg is immersed in the water,the temperature increased to 23 degrees Celsius ,calculate the initial temperature?
4 pounds
What is substances specific heat?
The amount of heat required to increase the temperature of the substance to 1 degree greater than that of the initial temperature of the body!
What is the amount of heat required to change the temperature of 200.0 grams of aluminium to 10 degrees Celsius?
Q=m.c.Δt (m: mass, c: specific heat capacity, Δt :change in temperature)(specific heat capacity of aliminum is 0.90 J/K.g = 200 x 0.90 x 10 (if initial temperature is 0)(if not, then Δt=final temperature-initial temperature) =1800 Joules
500cm3 of ideal gas at 40 degrees Celsius and 200kpa absolute is compressed to 250cm3 and cooled to 20 degrees Celsius.What is the final absolute pressure?
Assuming the amount of gas remains constant, we can use the ideal gas law to calculate the final absolute pressure. The initial pressure (P1) is 200 kPa and the final volume (V2) is 250 cm3. The initial temperature (T1) is 40 degrees Celsius or 313.15 Kelvin, and the final temperature (T2) is 20 degrees Celsius or 293.15 Kelvin. Using the equation (P1 * V1) / T1 = (P2 * V2) / T2, we can solve for the final absolute pressure (P2), which is approximately 400 kPa.
What is temperature and what does it measure?
Temperature is a measure of thermodynamic activity. Molecules of substances vibrate due to thermodynamic energy. When the substance gains heat, this energy increases and the vibrations become more vigorous. This is reflected by an increase in temperature.
If the oven will increase by 45 degrees per minute on the initial turn on the temperature is 70 degrees. what will the temperature be after 7 minutes?
(7 * 45) + 70 = 385
Why is it desirable to have the water a few degrees colder than room temperature when the initial temperature is taken?
It is desirable to have water a few degrees colder than room temperature when the initial temperature was taken for accuracy to be achieved. This is affected by the amount of heat energy which escapes the surroundings when the water is above room temperature.
) The temperature of a sample of water changes from 10 and degC to 20 and degC when the water absorbs 100 calories of heat. What is the mass of the sample?
one calorie of heat is able to raise one gram of water one degree Celsius so 400 calories could raise 1g of water 400 degrees, so it would raise the 80g by(400/80) 5 degrees Celsius plus the initial temp of 10 degrees, the 80g of water would have a final temp of 15 degrees Celsius
The temperature has fallen from 1 degrees to -13 degrees how far has it fallen?
change = final - initial -13 - 1 = -14 It has fallen 14 degrees.
What would the world be like with twice the friction?
Twice the friction means twice the energy that is being transformed in heat. So if the movements/actions/displacement/rotation were the same (compared with the initial fraction status), then the heat release from the friction would be doubled. That would increase the temperature of the environment by some degrees Celsius. How much is very dificult to say.
