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Please answer quick. Thank you Question 9 1 pts A water sample with unknown mass absorbed...
1. An unknown sample is being evaluated in lab. What is the specific heat of the compound if it requires 105.06 J to raise the temperature of 51.68 grams of the unknown from 15.25 °C to 22.9 °C. 2. A 25.00 gram sample of an unknown metal initially at 99.0 degrees Celsius is added to 50.00 grams of water initially at 5.94 degrees Celsius. The final temperature of the system is 20.15 degrees Celsius. Calculate the specific heat of the...
1. An unknown sample is being evaluated in lab. What is the specific heat of the compound if it requires 105.06 J to raise the temperature of 51.68 grams of the unknown from 15.25 °C to 22.9 °C. 2. A 25.00 gram sample of an unknown metal initially at 99.0 degrees Celsius is added to 50.00 grams of water initially at 5.94 degrees Celsius. The final temperature of the system is 20.15 degrees Celsius. Calculate the specific heat of the...
An unknown sample of metal with a mass of 20.0 grams absorbed 210 joules of energy. The temperature of the metal increased from 25.0°C to 70.0°C. Calculate the specific heat of the metal. What is the identity of the metal? gold silver copper iron aluminum
A chemist dissolve a 13.4 g sample of KOH in 115.0 grams of water in a coffee cup calorimeter. When she did so, the water temperature increased by 23.8 °C. How much heat energy was required to dissolve the sample of KOH? Calculate the heat of solution in kJ/mol. Assume the specific heat of the solution is 4.184 J/g ·°C. please help with work shown. sci notation and correct sig figs as well
A 50.0 g sample of water, initially at 25.0°C, is heated until it starts to boil. How much heat was needed to heat it to 100.0°C? The specific heat capacity of water is 4.184 J/gC. ( I don't know what formula I would use to solve this.)
i would really appreciate a quick answer please, thank you 2. A 82.5 g sample of iron bar is placed in a coffee cup calorimeter containing 150 ml of water at 22.6 °C. The final temperature of the water and the iron bar is 40.0°C. Assume that the heat capacity of the calorimeter is negligible. (SFe=0.444 J/g °C, SH2o = 4.184 Jlg °C). Report answers to 3 sf (significant figures). a. Calculate the initial temperature (°C) of the iron bar....
A 125 g sample of an unknown substance is heated to 93.6 °C and then dropped into 100.0 g of water at 19.0°C in a calorimeter. The temperature of the water rises to 31.0°C. What is the specific heat of the substance? Assume no heat lost to the surroundings. The specific heat of water is 4.184 J/ (g•°C).
Please help how to solve this question An unknown metal weighting 13.11 g at a temperature of 81.0 degrees Celius is place in a calorimeter containing 25.0 mL of water at a temperature of 25.0 degrees Celsius. The final equilibrium temperature is 30.0 degrees Celius. What s the specific heat of the metal? The specific heat of water is 4.184 J/g-C. Assume the density of water is 1.00g/mL and that there is no heat lost or gained by the calorimeter.
Question 4 4 pts A piece of metal with a specific heat of 1.29 J/gºC is heated to 126.6°C and then placed in 133.868 g of water which is at a temperature of 10.9 °C. After a minute, the temperature of the water has stopped changing and is now 45.6°C. Assuming that there are no heat losses to the container or surroundings, what is the mass of the piece of metal in grams? Assume that water has a specific heat...
Not edited Temperature Change and Heat Capacity - Calorimetry- Three substances PLEASE ANSWER ALL PARTS OF THE QUESTION: CASE 1,2 and 3 water copper silver cup Case 1: A 0.780-kg silver pellet with a temperature of 85 °C is added to 0.150 kg of water in a copper cup of unknown mass. The initial temperature of the water and the copper cup is 14 °C. The equilibrium temperature of the system (silver+Water+copper cup) is measured to be 27.0 °C. Assume...