Balance (NH4) 3 (PO4) Pb (NO3) 4

1. What is the pH of a solution with a 2.20 * 10-8 M hydroxide ion concentration? 0.342 6.00 6.34 7.66 2. What are the concentrations of hydroxide and hydronium ions in a solution with a pH of 10.2? 1.4 * 10-4 M H3O + and 7.1 * 10-11 M OH- 3.

When a theory is disaproved by further evidence, which of the following occurs?

How are isotopes of the same element alike? different?

What happens when animals are raised for food

When a beaker of water is heated over a Bunsen burner, the volume increases slightly. What is the most likely reason for the small increase in volume? A The water molecules are getting smaller. B The water molecules are getting bigger.

HBr + Mg (OH) 2 MgBr2 + H2O

What is the ability of a substance to be pulled into a wire? A malleability B ductility C conductivity D solubility

When a counterfeit detection pen is used on an authentic bill, what color does it turn? a. Pale blue b. Pale yellow c. Blue-black d. Pale pink

Why are the outer-most electrons the only ones included in the electron dot diagram?

What is the relationship between law of conservation and chemical reaction?