A $1\mathrm{.}28-kg$ sample of water at $10\mathrm{.}0C$ is in a calorimeter. You drop a piece of steel with a mass of $0\mathrm{.}385$ kg at reasonable assumptions that any steam produced condenses into liquid water during the process of equilibration and that the evaporation and condensation don't affect the outcome, as we'll see in the next section.$)$