please help me with chemistry

Question

Iron has a specific heat of 0.450 J/g·°C. How much energy is required to raise the temperature of 435 g of iron from 43.0°C to 180.0°C?

 -------kJ

Answer 1

q = mC∆T

q = heat = ?

m = mass = 435 g

C = specific heat = 0.450 J/gº

∆T = change in temperature = 180º - 43º = 137º

q = (435 g)(0.450 J/gº)(137º)

q = 26,818 J = 26.8 kJ (3 sig, figs.)