A fluorescent light tube usually contains

A. a vacuum.

B. oxygen.

C. mercury vapor.

D. light-emitting diodes.

Where is pollen produced

Know the difference between an ion and a molecule

Which definition is correct? A. A physical change creates a new substance because bonds are broken or formed B. A chemical change occurs when the substance remains the same but the shape, or other physical characteristics change C.

When most large food molecules are heated, they: A. boil B. melt C. bond with each other D. form entirely different molecules

Determine the molar mass of Zn?

What does the orbital tell you about the location of the electron?

If a 1.45 M solution has 2.43 g HCl dissolved, what is the volume of solution? (Change g Hl into mol using molar mass)

Which of the following describes a reaction that reaches equilibrium?

What happens to water during evaporation? A) It turns gas as it cools. B) It turns to liquid as it cools. C) It turns to solid as temperature decreases. Eliminate D) It turns to gas as the temperature increases.

A gas can holds 2.9 gal of gasoline. what is the quantity in cubic centimeters