MISSED THIS? Watch IWE 0.3; Read Section 9.4. You can click on the Review link to access the section in your text. A 32.6 g iron rod, initially at 21.6C, is submerged into an unknown mass of water at 63.1 C, in an insulated container. The final temperature of the mixture upon reaching thermal equilibrium is 59.8 C. Part A What is the mass of the water? Express your answer to two significant figures and include the appropriate units