Answer:

Explanation:
Iron is Fe, nitrogen is N. Nitrogen is diatomic, which means it occurs as a molecular pair by itself. Iron III nitride has a chemical formula of FeN because nitrogen has a charge of 3-, and iron III tells us the iron has a charge of 3+ so you just need one of each to make the charges balance and the compound neutral.
Yeah man I can help explain a little bit fits
Answer:
Any thing that occupied volume and mass in air is known as matter
I’m not 100% positive but quartz would make sense