Ask Question
20 September, 04:53

I am so lost, and suggestions to how I can solve this?

A sample of nickel (specific heat capacity 0.446J/goC) is heated to 255.5oC and placed in a coffee cup calorimeter containing 250.0 g of water at a temperature of 20.0oC. Calculate the mass of the nickel sample in grams, if the final temperature of the system is 35.5oC. The heat capacity of H2O is 4.18 J/gC.

+4
Answers (1)
  1. 20 September, 04:56
    0
    165.078 g

    Explanation:

    We are given;

    Specific heat capacity of nickel as 0.446 J/g°C Initial temperature of nickel is 255.5 °C Mass of water in the calorimeter is 250.0 g Initial temperature of water is 20° C Final temperature of the mixture is 35.5°C Specific heat capacity of water is 4.18 J/g°C

    We are required to calculate the mass of nickel sample;

    Step 1: Calculate the amount of heat absorbed by water.

    We know that quantity of heat absorbed, Q = m * c * ΔT

    Change in temperature, ΔT = 35.5°C - 20°C

    = 15.5 °C

    Therefore, Q = 250 g * 4.1 J/g°C * 15.5° C

    = 16,197.5 Joules

    Step 2: Calculate the amount of heat released by nickel sample

    Assuming the mass of nickel sample is m

    Then, Heat released, Q = m * c * ΔT

    Change in temperature, ΔT = 255.5 °C - 35.5 ° C

    = 220 °C

    Q = m * 0.446 J/g°C * 220° C

    = 98.12m joules

    Step 3: Determine the mass of nickel sample

    We know that the amount of heat absorbed is equivalent to amount of heat released.

    That is, Quantity of heat absorbed = Quantity of heat released

    Therefore;

    98.12 m joules = 16,197.5 Joules

    m = 165.078 g

    Thus, the mass of nickel sample is 165.078 g
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “I am so lost, and suggestions to how I can solve this? A sample of nickel (specific heat capacity 0.446J/goC) is heated to 255.5oC and ...” in 📗 Chemistry if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers