Can u pls help me with this question

What three natural resources are found in the great lakes region

What is bromine+calcium iodide--> calcium bromide +iodine balanced

Butane gas reacts with oxygen gas to give carbon dioxide gas and water vapor (gas). if you mix butane and oxygen in the correct stoichiometric ratio, and if the total pressure of the mixture is 390 mmhg, what is the pressure (in mmhg) of water vapor after the reaction is completed (temperature and volume do not change).