Describe what happens when a weak acid dissolves in water.

Sorry i dont understand the question can you rephase it?

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

The main types of electromagnetic radiation. radio  waves have  the lowest frequencies  and  longest  wavelengths, while gamma  waves have highest frequencies  and shortest wavelengths. the wavelengths vary across the electromagnetic spectrum from about 10–15 m to more than 104 m.hope it !