What does the term focus refer to?
a. an earthquake with a magnitude over 10.0
b. the spot inside earth where an earthquake occurred
c. the spot on earth's surface above an earthquake's origination point
d. a location on earth that suffers the most damage as a result of an earthquake

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

If 1.8 l of water is added to 2.5l of a 7.0 molarity koh solution, what is the molarity of the new solution

For each of the following compounds, write the formula then predict whether it would be a strong, weak, or non-electrolyte when placed in di water. for the ionic compounds only, put (s) or (aq) after the forrmula formula strong, weak or non electrolyte? a calcium hydroxide b. silver carbonate c. lead(ii) sulfate d. phosphorus trifluoride e. sodium phosphide f barium sulfate g. strontium acetate h. zinc nitrate