There is a solution that contains 10 moles of acetic acid (pka = 4.75). How many moles of sodium acetate will need to be added to this solution to result in a pH of
5.30?

[?] moles

Check the correct box to describe the periodic trends in electronegativity. electronegativity across a period: decreases. increases. electronegativity down a group: decreases. increases.

Use the drop-down menus to answer each question. which runner finished the 100 m race in the least amount of time? which runner stopped running for a few seconds during the race? at what distance did anastasia overtake chloe in the race?

May someone me with these science questions