A fluorescent light tube usually contains

A. a vacuum.

B. oxygen.

C. mercury vapor.

D. light-emitting diodes.

If a polyatomic ion is made of halogen and oxygen atoms, what form would one take if it had the fewest atoms? is it ... A) This form would get a per - prefix and an - ate suffix. B) This form would get only an - ate suffix.

What is the definition of a homogeneous mixture?

Which statement is true for the embryos of a salamander and a pig? A) Both lack limb buds. B) Both lack gill slits. C) Both have a notochord. D) Both have a shell breaker.

Which answer choice correctly describes a chemical bond? a force that holds atoms together in a fixed yet flexible structure a force that holds atoms together in a fixed and stationary structure a force that holds atoms together in a fixed and rigid

How did you use science for your summer vacation? List ideas

What information does a net ionic equation give that a complete ionic equation does not show

What is the molality of a solution containing 4.0 moles of solute in 3.2 kg of solvent? Round to the nearest tenth. Don't forget the units.

What is the name of a binary compound made up of lithium and chlorine?

A scientist in London and a scientist in California both conducted independent investigations that produced similar results.

When magnesium combines with oxygen, the reaction involves a. a conversion of protons into electrons. b. sharing of electrons between Mg and O. c. transfer of electrons from Mg to O. d. transfer of electrons from O to Mg.