How many moles of calcium atoms do you have if you have 7.53 × 10²¹ atoms of calcium. (The mass of one mole of calcium is 40.08 g.)

You have 125g of a certain seasoning and are told that it contains 76.0 g of salt what is the percentage of salt by mass in this seasoning

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

What term is missing from the central region that describes hypotheses, theories, and laws? popular predictable mathematical falsifiable