7.03E24 molecules of CO2, what is the mass in grams?

What is the [oh-] in a solution with a poh of 3.90

Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?

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