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What is the formula for calculating the heat energy required to change the tempe

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Question: What is the formula for calculating the heat energy required to change the temperature of a substance? (2020)

Options:

  1. Q = mcΔT
  2. Q = mL
  3. Q = mgh
  4. Q = PV

Correct Answer: Q = mcΔT

Exam Year: 2020

Solution: 

The formula for calculating the heat energy required to change the temperature of a substance is Q = mcΔT, where m is mass, c is specific heat capacity, and ΔT is the change in temperature.

What is the formula for calculating the heat energy required to change the tempe

Practice Questions

Q1
What is the formula for calculating the heat energy required to change the temperature of a substance? (2020)
  1. Q = mcΔT
  2. Q = mL
  3. Q = mgh
  4. Q = PV

Questions & Step-by-Step Solutions

What is the formula for calculating the heat energy required to change the temperature of a substance? (2020)
  • Step 1: Identify the mass (m) of the substance you want to heat or cool. This is usually measured in grams (g).
  • Step 2: Find the specific heat capacity (c) of the substance. This value tells you how much heat energy is needed to change the temperature of 1 gram of the substance by 1 degree Celsius (°C).
  • Step 3: Determine the initial and final temperatures of the substance to find the change in temperature (ΔT). Calculate ΔT by subtracting the initial temperature from the final temperature (ΔT = final temperature - initial temperature).
  • Step 4: Plug the values of mass (m), specific heat capacity (c), and change in temperature (ΔT) into the formula Q = mcΔT.
  • Step 5: Calculate Q to find the total heat energy required to change the temperature of the substance.
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