The density of aluminum is 2.70 g/ml. What is the mass of a cube of Al that measures 2.20 cm on each side? (remember significant figures and to include the
units of g in your answer, remember that 1 mL=1 cm)

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

May someone me with these science questions

Helium decays to form lithium. which equation correctly describes this decay?