Chemistry

A 100g sample of water at 90 degrees celsius is added to a 100g sample of water at 10 degrees celsius.
The final temperature of the water is which of the following:
a) between 50 degrees celsius and 90 degrees celsius
b) 50 degrees celsius
c) between 10 degrees celsius

This is a practice problem so i know that the answer is b) 50 degrees celsius, but i am confused on how to find that answer.

  1. 👍 1
  2. 👎 0
  3. 👁 1,610
  1. Since these are the same masses, you can simply take the average of 90 and 10.
    (90+10)/2 = 50. If they are not the same mass it is a little more complicated than that but all of these can be solved the same way.

    heat gained by cool water + heat lost by warm water = 0

    [mass cool H2O x specific heat H2O x (Tfinal-Tinitial)] + [mass warm H2O x specific heat H2O x (Tfinal-Tinitial)] = 0
    Solve for Tfinal.

    1. 👍 1
    2. 👎 0
  2. Thats wrong

    1. 👍 0
    2. 👎 2

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry

    The solubility of KNO3 is 80g/100g water at 50 degrees and 10g/100g water at 0 degrees. The solubility of CuSO4 is 60g/100g water at 50 degrees and 20g/100g water at 0 degrees. A mixture contains 13.8g of KNO3 and 1.94g of CuSO4.

  2. chemistry

    How many moles of carbon, hydrogen, and oxygen are present in a 100g sample of ascorbic acid?

  3. Physics 2

    calculate the final temperature of a 400g of water at 80 degree celsius if it is poured into a 100g pot at 30 degree celsius. note: c of pot is 840 J/kg degree celsius.

  4. Chemistry

    A saturated solution of barium chloride at 30 degrees celcius contains 150g of water. How much additional barium chloride can be dissolved by heating this solution by heating this solution to 60 degrees. Solubility of Bacl @ 30

  1. chemistry

    How much heat is necessary to change a 52.0 g sample of water at 33 degrees celsius into steam at 110 degrees celsius?

  2. chemistry help

    what mass of ammonium chloride can be added to 100g of water at 20 degrees C before the solution becomes saturated

  3. Chemistry

    Compounds like CCL2F2 are known as chloroflourocarbons, or CFCs. These compounds were once widely used as refrigerants but are now being replaced by compounds that are believed to be less harmful to the environment. The heat of

  4. Chemistry

    How much heat is required to raise the temperature of a 65-g sample of water from 32 degrees celsius to 65 degrees celsius

  1. Chemistry

    A 5.0-g Sample of KBr at 25.0 degrees celsius dissolves 25.0 mL of water also at 25.0 degrees celsius. The final equilibrium temperature of the resulting soltution is 18.1 degrees celsius. What is the enthalpy of of solution in

  2. Chemistry

    a 20.94-g sample of an unknown metal is heated to 99.4 degrees Celsius in a hot water bath until thermal equilibrium is reached. The metal is quickly transferred to 100 mL of water at 22.0 degrees Celsius contained in a styrofoam

  3. Chemistry

    A solution containing 100g of kbr in 100g of water at 100 degree Celsius is cooled at 40 degree Celsius. Is the solution saturated or unsaturated at 100 degrees Celsius? Is the solution saturated or unsaturated at 40 degrees

  4. Chemistry AP help

    7. A 100g mass of tungsten at 100 degrees C is placed in 200 mL of water at 20 degrees C. The mixture reaches equilibrium at 21.6 degrees C. Calculate the specific heat of tungsten. Ok, I tried working it out but I got q= 100g x

You can view more similar questions or ask a new question.