Which of the following is the largest contributor to the salt ions in the ocean? Select one of the options below as your answer:

a. sodium

b. chloride

c. sulfates

d. calcium

The atomic mass of hydrogen is one. true or false

Which statement best describes what the density of an object represents? Density is the mass of an object per unit of length. Density is the volume of an object of a certain mass. Density is the length of an object for a certain mass.

What is the primary source of heat in the central cores of the giant planets?

Which of these can be classified as a substance A) oxygen B) carbon dioxide C) air D) acid rain

What is the word equation for sulfuric acid and copper oxide.

What is the relationship between chemical equilibrium and the rates of forward and reverse reaction

What is the valence of Fluorine

When liquid helium is exposed to room temperature, it forms a gas. Which best explains why this happens? The liquid helium absorbs energy from the air in the room. The particles in the air absorb the energy of the liquid helium.

Why was Bohr's model considered more accurate than Dalton's model?

Select the statements that correctly describe a buffer. 1) The pH of a buffer solution does not change significantly when any amount of a strong acid is added. 2) A buffer is generally made up of a weak acid and its conjugate base.