Which choices are uses of electrical energy? Choose all that apply.

A. creates useful gases

B. supplies energy for heat

C. provides power to lights

D. creates a magnetic force

What is the density of the black hole

12. complete each of the following word equations for synthesis reactions. a. sodium + oxygen -> b. magnesium + fluorine -> 13. complete and balance the equations for the decomposition reactions. a. hgo -> [with the triangle heat symbol above the arrow] b. h2o(l) -> [with "electricity" written above the arrow]

Which statement describes covalent bases? they have hydroxide ions. they produce hydrogen ions. they are often amines. they are named the same as ionic compounds.