To determine the number of neutrons in an atom what must be done

How do scientists think that gravity affected the formation of our solar system?

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

50 points! need answer asap. what type of organic compound contains the following functional group? (2 points)