If hydrogen's temperature goes from 50 to 75oC in a 22g sample, how much heat was used?

Use examples from the article to explain one positive and one negative effect that chemistry has had on society

200. ml of 3.00 m nacl solution is diluted to a final volume of 500. ml. what is the molarity of the final solution?

Most materials are not magnetic because their magnetism has worn off. their magnetic domains are arranged randomly. they lack magnetic fields. earth’s heat has destroyed their magnetism.