Answer to Question #168514 in General Chemistry for Hayley

Question

An 7.20 ML sample of water is cold from 37.5 Celsius to 15.2 Celsius how many joules of energy are absorbed or released by the water use a negative sign if the water is releasing heat the specific heat capacity of liquid water is 4.184 J/G•K

Answer 1

m = 7.20g

$\Delta T$ = 310.5K - 288.2K = 22.3 K

c = 4.184 j/gK

Q = mc$\Delta T$

Q = 7.2 × 4.184 × 22.3

Q = 671.78 joules