How many calcium (Ca) atoms are in the chemical formula:

CaCO3

1

5

3

None

Which statements describe an ideal gas? Select all the correct answers. A. The average energy of the particles changes as collisions occur. B. The particles are in constant motion. C. Particles both attract and repel each other. E.

Molecules move slowest when carbon dioxide is in which form? A. liquid carbon dioxide B. solid carbon dioxide C. carbon dioxide gas D. plasma carbon dioxide

An acid is added to water, and a new equilibrium is established. What is the system after the acid is added? A. pH w = 1 x 10-14 B. pH w - 14 C. pH > pOH and Kw = 1 x 10-14 D. pH > pOH and Kw > 1 x 10-14

Which of the following is the correct word equation for the reaction described below? Mercury (II) oxide breaks down when it is heated to form oxygen gas and liquid mercury.

The atomic number of Zn2 + gives us the information about

What is the concentration when 0.065 moles of NaNO3 are dissolved in enough water to make 150.0 mL of solution?

What are the reactants and products of cellular respiration and photosynthesis?

Which situation would probably NOT result in the formation of new species? A) The introduction of a predatory fish that only eats the largest native bass in a Georgia lake.

How many electrons are present in outermost shell of argon atom

Why is there a difference between sodium and potassium in the reactivity with water