A 42.7 gram sample of potassium nitrate contains how many grams of potassium?

Which statement explains why the bonds between non metals tend to be covalent? the bonds are found to be nondirectional they have large differences in electronegativity they have small differences in electronegativity they have ions that produce an electrostatic pull

No copying 15 pts how does a free-body diagram tell you about the net force on an object?

What is the empirical formula of a compound that is 50.7% antimony and 49.3% selenium ?