How much work is done when a gas expands into a vaccuum?

Which of the dna typing techniques do you think you would choose if you had to analyze a dna sample? why?

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

Find the mass, in grams, of 5.00*10^23 molecules of f2