Calorimeter Definition and 63 Threads

Homework Statement 380g of a liquid at 12'C in a copper calorimeter weighing 90g is heating at a rate of 20 watt for exactly 3 minutes to produce a temperature of 17'C. If the specific heat capacity of copper is 40Jkg-1K-1, the thermal capacity of the heater is negligible, and there is a...

Homework Statement calorimeter mass = 70 g specific heat of calorimeter = .1 cal/gC cal. and water mass = 200g temp of water and cal = 65 C mass of cal, water, and ice = 220 g temp of ice = 2 C final temp of cal, water, and ice = 30 C Find Lf for this ice. Find the percent error...

Homework Statement calorimeter mass = 60 g calorimeter and water mass = 290 g temperature of cal. and water = 30 C temp of steam = 90 C mass of cal, water, and steam = 300 g specific heat of cal = .1 cal/g C final temp of cal, water, and steam = 80 C Find the Lv for this steam...

"An aluminum calorimeter with a mass of 100g contains 250g of water. The calorimeter and water are in thermal equilibrium at 10.0Degree C. Two metalic blocks are placed into the water. One is a 50g piece of copper at 80.0 degree C. The other block has a mass of 70.0g and is origionally at a...

I needed to know if anyone can help me solve a problem. I am supposed to calculate the final temperature after mixing 250 mL of coffee at 80 degrees C with 250 g of ice at 0 degrees C. The heat of fusion for ice is 6.01 kJ/mol The ice undergoes a phase change, but I don't know how to...

I don't even know where to start with this problem, can someone please help. A block of ice at 0 degress C is added to a 150g aluminum calorimeter cup which holds 210g of water at 12 degrees C. If all but 2.0g of ice melt, what was the original mass of the block of ice?

A 25.5 g silver ring (Cp = 234 J/kg times degrees C) is heating to a temperature of 84 degrees C and then placed in a calorimeter containing 5 x 10 to the negative 2 power kg of water at 24 degrees C. the calorimeter is not perfectly insulated, however, a 0.140 kJ of energy is transferred to...

hi guys 200g copper calorimeter, 200g of water, both intially at 30 degrees. Aluminium rod added to the system, with mass of 250g, final temp is 100 degrees. 10g of water is converted to steam. first its asking to calulate how much energy is reuiqred to vaporize those 10g to steam then...

This question refers to a lab that we did for determining the HHV value of bio diesel fuel. We are asked if the experiment was done using a higher initial temperature than the bomb was calibrated for, how would this affect the HHV determined? The room temperature is assumed to be the same in...

I think the answer is d). Am i correct? Because the change in energy equals the heat absorbed by the calorimeter and the water. If not, can you please provide an explanation for your answer. Thanks

Okay, I'm working on some pchem problems and I'm stuck on this one question... A 5.33g piece of Cu metal is heated to 372.85K in boiling water, then dropped into a calorimeter containing 99.53g of water at 295.75K. The calorimeter is sealed to the outside environment, and the temperature...

When using a different calorimeter, and mixing 50 ml of hot water at 65 C with 60 ml of water in the calorimeter at 25 C, the temperture of the calorimeter increased by 5.5 C. Calculate the heat capacity of this calorimeter. Is this a better or worse calorimeter than the one used in the sample...

hi everybody: my problem says the following: A copper calorimeter can with mass 0.100 kg contains 0.160 kg of water and 0.018 kg of ice in thermal equilibrium at atmospheric pressure. If 0.750 kg of lead at a temperature of 255 degree celcius is dropped into the calorimeter can, what is the...