Ask Question
5 August, 10:53

Ethanol has heat specific heat of 2.5 j/g⋅°c, how much heat is released when 12 g of ethanol is cooled from 38.5 °c to 36.7 °c?

+4
Answers (2)
  1. 5 August, 13:22
    0
    -54 J

    Explanation:

    Here we have to use the specific heat equation,

    Q = mc∆T

    where Q is the heat, m is the mass, c is the specific heat capacity and ∆T is the change of temperature.

    Given,

    m = 12 g

    c = 2.5 J/g⋅°C

    ∆T = Tfinal - Tinitial = 36.7 °C - 38.5 °C = - 1.8 °C

    Plugging the numbers in the specific heat equation,

    Q = 12 g x 2.5 J/g⋅°C x - 1.8 °C = - 54 J

    As heat is released Q has a negative sign. When heat is absorbed Q has a positive sign.
  2. 5 August, 14:44
    0
    J = (12) (1.8) (2.5)

    J=54
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Ethanol has heat specific heat of 2.5 j/g⋅°c, how much heat is released when 12 g of ethanol is cooled from 38.5 °c to 36.7 °c? ...” in 📙 Chemistry if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers