How would you explain the process of writing ionic chemical formulas to someone unfamiliar with the process? be detailed

Suppose you have designed a new thermometer called the x thermometer. on the x scale the boiling point of water is 129 ? x and the freezing point of water is 13 ? x. part a at what temperature are the readings on the fahrenheit and x thermometers the same?

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

What type of matter is made of only one kind of atom