Answer to Question #257339 in General Chemistry for Kimmay17

Question

Using the specific heat of water equal to 4.184 J/ g°C, calculate the following and express your answers in proper number of significant figures:

q of hot water: __________________

q of cold water: __________________

Answer 1

heat lost by hot water = q = mC∆T

m = mass of hot water = 55 g

C = specific heat water = 4.18 J/gº

∆T = change in temperature = 41.3º - 61.3º = -20º

q = (55 g)(4.18 J/gº)(41.3 - 61.3) = -4598 J = heat lost by hot water