Heat Transfer/Specific Heat Problems. Step-by-step

Question

How many joules of heat are required to raise the temperature of 550 g of water from 12.0 oC to 18.0 oC?

Answer 1

The specific heat for water (C) is 4.184 J/gº

The expression we use to calculate heat is q = mC∆T

q = heat = ?

m = mass = 550 g

C = specific heat = 4.184 J/gº

∆T = change in temperature = 18.0º - 12.0º = 6.0ºC

q = (550 g)(4.184 J/gº)(6.0º)

q = 13,807 J = 13,800 J (3 sig. fig.s)