What is the percent of O in AgNO3?

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

Which buffer would be better able to hold a steady ph on the addition of strong acid, buffer 1 or buffer 2? explain. buffer 1: a solution containing 0.10 m nh4cl and 1 m nh3. buffer 2: a solution containing 1 m nh4cl and 0.10 m nh3

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?