on a solubility curve graph, a saturated solution of KNO3 is formed from 100g of water, if the saturated solution is cooled from 60°C to 20°C , how many grams of precipitate are formed?​

Which substances have the lowest melting points: ionic covalent, or metallic

One way that radioactive waste is treated is by burying it in repositories. the repositories are found only in states with very low populations. true or false? a. trueb. false(also i meant to put high school but it put down middle school instead)

Ascientist measures the speed of sound in a monatomic gas to be 449 m/s at 20∘c. what is the molar mass of this gas?