The specific heat of a solution is 4.18 J/(g.°C) and its density is 1.02 g/mL. The solution is formed by combining 20.0 mL of solution A with 30.0 mL of solution B, both initially at 21.4°C. The final tem perature is 25.3°C. Calculate the heat of reaction assuming no heat is lost to the calorimeter. Use cor rect significant digits