Question

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

Answer 1

25 degrees

Step-by-step 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