What is the volume of 0.5 moles of a gas at 2 atmospheres of pressure and 15°c​

☆ionisation energy increases across a period from na -> ar☆ionisation energy decreases down a group from li -> fr☆ionic radius decreases across a period from na -> cl☆ionic radius increases down a groupfrom f -> ii hope it clarifies your doubts

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