Which containe the most moles: water, aluminum, salt, baking soda

Which is more reactive, Rubidium or Hydrogen?

What is the mole-to-mole ratio between 25 Oxygen and 18 Water

Which of the following most likely happens during a chemical change? No new substances are formed. Properties of a substance remain unchanged. Composition of a substance is same as before. Different atoms than before are introduced after the change.

Given the reaction: This reaction does not reach a state of dynamic equilibrium because one of the products formed is A) an insoluble base B) a soluble base C) a precipitate D) a gas

A closed container is filled with oxygen. The pressure in the container is 245 kPa. What is the pressure in millimeters of mercury? Express the pressure numerically in millimeters of mercury.

Is the mass of an atomic nucleus greater or less than the sum of the masses of the nucleons composing it? Why don't the nucleon masses add up to the total nuclear mass?

Consider the equilibrium system below. If the system is at dynamic equilibrium, which statement is true? a. Sublimation of the NH4CI crystals stops. b. Solidification of the NH4CI vapors stops. c.

What happens to the atomic radius as the atomic number increases down and why

What is the oxidation number of sulfur in H2SO3? a. + 3 b. + 1 c. + 2 d. + 4

A) Write the formula of the conjugate base for acid HF. b) Write the name of the conjugate base found in part A.