Select the correct answer. A substance is followed by the symbol (/) in a chemical equation. What does the symbol represent?

Ibelieve y y even though i've only taken chemistry for one year

Use a magnet to separate iron, evaporate water, i'm not sure how to separate the other two i'm sorry but good luck

Those are different gas lawshere is a brief description of themcharles's law states that volume and temperature are directly proportional to each other as long as pressure is held constant.  boyle's law asserts that pressure and volume are inversely proportional to each other at fixed temperature.gay-lussac's law introduces a direct proportionality between temperature and pressure as long as it is at a constant volume.    source: