Calculate the pH at the equivalence point when 40 mL of a 0.050 M weak monoprotic acid (K a =6.3*10^ -5 ) is titrated with 0.050 M NaOH .

Ineed ! it’s science and it’s due tomorrow!

Which of the following happens during cell division? (a) energy is created (b) waste is eliminated (c) carbon dioxide is released (d) damaged cells are replaced

11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg