Elements within a period have ___. O the same atomic number
O similar chemical properties
O the same number of electrons
O the same number of electron shells

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?

Ageologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. based on this information, the sample mineral has to be softer than a. orthoclase. b. fluorite. c. apatite. d. corundum.

Asolid that forms and separates from a liquid mixture is called