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18 October, 08:01

Thermal Chemistry [11A. S, 11B. S. 11C. R, 11D. S]:Question 2

When 20 calories of heat is added to 2.0 grams of water at 15

degrees Celsius the temperature of water increases to

(Specific heat of Water = 1 calorie/gram °C OR 4.186 joule/gram °C

Select one

O

5.0 degrees Celsius

15 degrees Celsius

25 degrees Celsius

50 degrees Celsius

+3
Answers (1)
  1. 18 October, 08:23
    0
    25 degrees

    Explanation:

    Q = mc^T

    84 = (2.0) (4.18) ^T

    84 = 8.36^T

    Divide each side by 8.36

    ^T = 10 degrees

    15 + 10 = 25

    Final temp = 25
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