(A) When 1.00 kg lead (specific heat capacity = 0.13 J g^-1 °C^-1) at 100.0 °C is added to a quantity of water at 28.5 °C, the final temperature of the lead–water mixture is 35.2 °C. What is the mass of water present?

(B) A 100.0 g copper sample (specific heat capacity = 0.385 J g^-1 °C^-1) at 100.0 °C is added to 50.0 g water at 26.5 °C. What is the final temperature of the copper–water mixture?