Question

You have 50.0 g of warm water in a calorimeter at 35.0 oC. You then add...

You have 50.0 g of warm water in a calorimeter at 35.0 oC. You then add 50.0 g of cold water at 1.7 oC and the final temperature of the system was 18.9 oC.

(Specific Heat of Water = 4.184 J/(goC))

a.Calculate the q for warm water in kJ (should be a negative number)

b.Calculate the q for cold water in kJ (should be a positve number)

c.Using the answers for a. and b., calculate q for the calorimeter (should be negative)

d.Calculate the Heat Capacity for the calorimeter in J/ oC.

0 0
Add a comment Improve this question Transcribed image text
Answer #1

Gamum nihal ん So mx 4 R43 33 48-12 Touls -3 368 K3 A. Sog x 4.184 丨8-9-19 C. 3 S18 3 38ㄙㄙ ma16 161C

Add a comment
Know the answer?
Add Answer to:
You have 50.0 g of warm water in a calorimeter at 35.0 oC. You then add...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • A hot metal at 125 oC was dropped into 75.0 g of water kept at a...

    A hot metal at 125 oC was dropped into 75.0 g of water kept at a room temperature of 20.6 oC in a calorimeter. Within a couple of minutes, water’s temperature increased to 26.8 oC? (a) How much heat energy was absorbed by water? [‘c’ for water is 4.184 J/goC] (b) How much heat energy was released by the metal? (c) What information is needed to calculate the specific heat capacity of the metal?

  • In a coffee-cup calorimeter, 11.0-g sample of solid CaCℓ2 is dissolved in 125 g of water at 25.0 oC. The temperature in...

    In a coffee-cup calorimeter, 11.0-g sample of solid CaCℓ2 is dissolved in 125 g of water at 25.0 oC. The temperature in the calorimeter is measured to be 39.2 oC when the dissolution of CaCℓ2 is completed. Assuming that the specific heat of solution is equal to that of water, i.e., 4.184 J/g oC, calculate the heat of solution of CaCℓ2 in water, in kJ/mol.

  • A 2.50 g sample of ethanol, C2H5OH, was combusted in the presence of excess oxygen in...

    A 2.50 g sample of ethanol, C2H5OH, was combusted in the presence of excess oxygen in a bomb calorimeter containing 2.00 kg of water. The temperature of the water increased from 22.500oC to 27.845oC. The heat capacity of the calorimeter is 2520 J/oC and the specific heat capacity of water is 4.184 J/goC. Calculate the molar enthalpy of the combustion reaction in kJ/mol

  • 3. In a dissolution experiment, 5.0 g of NH4NOs was dissolved in 50.0 mL of water...

    3. In a dissolution experiment, 5.0 g of NH4NOs was dissolved in 50.0 mL of water in a calorimeter If the calculated for the reaction was 1.7 kJ, calculate the observed Ar for the experiment. (Ignore the heat capacity of the calorimeter, i.e., use Ceup, -0. Assume the specific heat capacity of the solution = 4.18 J/g。C and the density of the water-1.0 g/mL)

  • 2. We add 4.158 kJ of heat to a calorimeter that contains 55.0 g of water....

    2. We add 4.158 kJ of heat to a calorimeter that contains 55.0 g of water. The temperature of the water and the calorimeter, originally at 22.34°C, increases to 38.74°C. Calculate the heat capacity of the calorimeter in /°C. The specific heat of water is 4.184 J/g °C. 3. What is the standard enthalpy change for the following reaction? N2H (1) + 2NO2(g) → 2N2O(g) + 2H2O(1) AH (kJ/mol) N2H4(1) +50.6 NO2(g) +33.1 N2O(g) +82.1 H20(1) -285.8

  • Consider the dissolution of 1.50 grams of salt XY in 75.0 mL of water within a...

    Consider the dissolution of 1.50 grams of salt XY in 75.0 mL of water within a calorimeter. The temperature of the water decreased by 0.93 oC. The heat capacity of the calorimeter is 42.2 J/oC. The density of the water (and the solution) is 1.00 g/mL. The specific heat capacity of the solution is 4.184 J/goC. Identify the surroundings. Group of answer choices Salt dissolving in the water Calorimeter Water Solution and calorimeter

  • An 78.5 g piece of metal whose T = 63.00 oC is placed in a coffee cup calorimeter containing 125 g water.  &n...

    An 78.5 g piece of metal whose T = 63.00 oC is placed in a coffee cup calorimeter containing 125 g water.    When the system reaches equilibrium, the water has changed from 20.00 oC to 24.00 oC. What is specific heat of metal? An 88.5 g piece of metal whose T = 78.8 oC is placed in a coffee cup calorimeter containing 244 g water.    When the system reaches equilibrium, the water has changed from 18.80 oC to 200 oC....

  • In a coffee-cup calorimeter, 11.0-g sample of solid CaCℓ2 is dissolved in 125 g of water...

    In a coffee-cup calorimeter, 11.0-g sample of solid CaCℓ2 is dissolved in 125 g of water at 25.0 oC. The temperature in the calorimeter is measured to be 39.2 oC when the dissolution of CaCℓ2 is completed. Assuming that the specific heat of solution is equal to that of water, i.e., 4.184 J/g oC, calculate the heat of solution of CaCℓ2 in water, in kJ/mol.

  • In a coffee-cup calorimeter, 11.0-g sample of solid CaCℓ2 is dissolved in 125 g of water...

    In a coffee-cup calorimeter, 11.0-g sample of solid CaCℓ2 is dissolved in 125 g of water at 25.0 oC. The temperature in the calorimeter is measured to be 39.2 oC when the dissolution of CaCℓ2 is completed. Assuming that the specific heat of solution is equal to that of water, i.e., 4.184 J/g oC, calculate the heat of solution of CaCℓ2 in water, in kJ/mol.

  • Initial Final Mass of Marshmallow (g) 7.1g 6.3g Temperature (oC) 29.1 oC 32.2 oC 1. Calculate...

    Initial Final Mass of Marshmallow (g) 7.1g 6.3g Temperature (oC) 29.1 oC 32.2 oC 1. Calculate the number of Joules released per gram of marshmallow burned. Show all work. Do this as follows: Find the T of water = Tfinal- Tinitial T of water = 3.1oC b.  Find the Joules absorbed by the water using the formula below. Show all work. Joules = (10mL water) x (1.00g)/ mL x (3.1oC) x (4.184 joules)/goC The density of water is 1.00 g/mL, and...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT