Which formula is an empirical formula?

a) C4H10

b) C3H6

c) CH4

d) C2H6

(the numbers should be smaller)

What two chemical mechanisms change pyruvate to acetyl-CoA in the pyruvate dehydrogenase complex? Group of answer choices a) Decarboxylation and condensation. b) Oxidation and decarboxylation. c) Condensation and dehydrogenation.

If a graduated cylinder has a current water level of 30ml and you add an object which causes the water level to rise to 53ml. What is the volume of the object you placed in the water?

Explain how the ecosystem that you selected follows the law of conservation of mass and the law of conservation of energy. It is said that only about 10% of stored energy is transferred between trophic levels of the ecosystem.

What part of dalton’s atomic theory is disproved by the existence of isotopes?

What can be explained by the Arrhenius theory?

When does raising the temperature of a gas increase its pressure? A. temperature B. volume C. number of particles D. pressure

Hexyne. What does the name of this hydrocarbon tell you about its molecular structure?

Which of the following processes includes all of the others? Group of answer choices transport of an ion down its electrochemical gradient osmosis passive transport facilitated diffusion

How is the Bohr atomic model different from the plum-pudding model? A. In Bohr's model, the atom's mass is found at its center instead of distributed throughout. B. In Bohr's model, the atom's mass is mostly made up of electrons instead of protons.

What does the cell theory state? A. that cells come from other cells B. that cells come only from animals C. that cells cannot be created or destroyed