Look at the picture below. What is the name of the copper salt?

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table

What is the empirical formula of a compound that is 50.7% antimony and 49.3% selenium ?

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.