A compound has 43.7g Phosphorus and 56.39 of Oxygen Calculate the empirical formula

How many moles of bromine are needed to produce 3.23 moles of potassium bromide

Now look at the segment of the graph between the two data points marked with black squares. describe how the boiling point and melting point plots behave between these points. be as specific as possible.

Achemical reaction is done in the setup shown , resulting in a change of mass. what will happen if the same reaction is done in a sealed container that is placed on the electronic balance?