27.0g of an unknown metal at 100 degrees Celcius was dropped into a beaker containing 313g of water initially at 22.3 degrees Celcius. The final temperature of the mixture was 25.1 degrees. What is the specific heat capacity of the unknown metal?

Idon’t understand this page, can someone ?

The boiling point of propanoic acid is higher than that of 1-butanol because: propanoic acid has a higher molecular weight than 1-butanol. propanoic acid is more soluble in water than 1-butanol. propanoic acid is a better hydrogen bond donor than 1-butanol. propanoic acid forms hydrogen bonded dimers and 1-butanol does not. 1-butanol forms hydrogen bonded dimers and propanoic acid does not.

What will most likely happen when two bromine atoms bond together?