Why does Tin (II) Bromide dissolve in water faster than Carbon Dioxide?
Answer:
Because tin (II) bromide is a salt (ionically bonded) and bromide salts are generally soluble (will dissolve) in water. The ionic bond, when placed in water, will be more easily overcome because of the polarity of water molecules--you know about the way that works, I assume. Basically the water molecules are polar so different parts of water molecules will attract the different ions, eventually splitting the ions apart and surrounding them with water.
Carbon dioxide is a covalently bonded compound. Covalent bonds are stronger than ionic bonds, and in addition, CO2 isn't a polar molecule (its dipole moments cancel out), so water would take longer to dissolve it, if it ever managed. Also consider that carbon dioxide is made up of double bonds, which are even stronger than single covalent bonds.