2. Calculate the heat (in calories) lost by 115 g of water as it cools from...
1. Calculate the heat (expressed in calories) required to heat 115 g of water from 15.4^C to 91.4^C 2. Calculate the heat (in calories) lost by 115 g of water as it cools from 91.4^C to 15.4^C 3. Calculate the temperature change caused by absorption of 3.85 kcal heat by 75.4 g water 4. Calculate the final temperature of 75.4 g of water originally at 12.6^C after it absorbs 3.85 kcal of heat 5. A 23.9 g piece of metal...
Problems 1. Calculate the heat (expressed in calories) required to heat 115 g of water from 15.4°C to 91.4 °C.
Calculate energy in joules and calories, when 15.0g of ethanol is lost, C2H6O,cools from 60.5 to 42.0 ,Ethanol has 0.588cal/g degree Celsius and 2.46j/g degree Celsius
1) For part A, calculate q (the heat lost in calories) for copper and lead. The specific heats of these metals are in the background section. Then calculate q (the heat gained in calories) for the water in each case. Remember that you used 25.0 g of water in the experiment. Show your calculations 2)The heat lost by the metal and the heat gained by the water should be the same. Are they? If not, list possible sources of error....
joules lost when 78.1 g of water cools from 86.4∘C to 3.6 ∘C
Part C the energy lost when 74.5 g of water cools from 86.4 C to 4.7 C SubmitP Previous Answers Request Answer Incorrect: Try Again Part D
A. Calculate the heat change in calories for vaporization of 25.0 g of water at 100 ∘C. Express your answer as a positive value using three significant figures and include the appropriate units. B. Calculate the heat change in joules for vaporization of 7.00 g of water at 100 ∘C. Express your answer as a positive value using three significant figures and include the appropriate units. C. Calculate the heat change in kilocalories for condensation of 6.5 kg of steam...
How much heat is lost when a solid iron nail weighing 23.00 g cools from 675.0 °C to 133.6 °C? (The specific heat of Fe is 0.450 J/g °C). A 563 J. B 5603 J. C 27670 J. D 2767 J. Question What mass of benzene is cooled from 83.8 °C to 77.1 °C when 167 J of energy is transferred out of the system? (The specific heat of benzene is 1.740 J/g °C). A 1.43 g. B 167 g...
What is the amount of heat, in calories, given off from a 5 g piece of aluminum when it cools from 80°C to 20°C? The specific heat capacity of aluminum is 0.215 cal/g∙°C. Show your work.
Calculate the amount of heat liberated (in kJ) from 319 g of mercury when it cools from 73.8°C to 12.0°C.