How does math relate to electrons and ion formation?

In order to find the NET nuclear charge from an atom's valence electron to the proton nucleus, you need to do some simple math in order to find the charge.

You would also need to apply math when you need to figure out what the charge on an ion is by either adding or taking away electrons depending on whether it is an anion or cation.

The answer is c. 320 g

The air is going to come out because of the low pressure.