Part A

A silver block, initially at $57\mathrm{.}9C,$ is submerged into

$100\mathrm{.}0g$ of water at $24\mathrm{.}5C,$ in an insulated

container. The final temperature of the mixture

upon reaching thermal equilibrium is $26\mathrm{.}3C.$

What is the mass of the silver block?

Express your answer to two significant figures and include the appropriate units.

$m=$