Which one best describes the Law of Conservation of Mass? O matter changes mass changes
mass can be made and destroyed
O matter does not change mass does change
matter changes but mass stays the same

Which is an example of the practical pursuit of alchemy? a. forming perfect substances. b. transforming base metals. c. developing metalworking techniques. d. linking spiritual characteristics with material substances.

What is the atomic number of an atom that has 6 protons

Calculate the molarity of each aqueous solution: a. 78.0 ml of 0.240 m naoh diluted to 0.250 l with water b. 38.5 ml of 1.2 m hno3 diluted to 0.130 l with water