What is the volume of 220g of an object with a density of 55g/cm^3

Determine the percent sulfuric acid by mass of a 1.61 m aqueous solution of h2so4. %

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

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