a scientist takes a 5.00 L sample of helium at STP and heats it. The volume expands to 6.00 L and the temperature rises to 312 K. What is the new pressure of the sample? (show work)

Complete this brønsted-lowry reaction placing each product by its appropriate label. hso4- + hcn

10-14. (a) when 100.0 ml of weak acid ha were titrated with 0.093 81 m naoh, 27.63 ml were required to reach the equivalence point. find the molarity of ha. (b) what is the formal concentration of a- at the equivalence point? (c) the ph at the equivalence point was 10.99. find pk. for ha. (d) what was the ph when only 19.47 ml of naoh had been added?

Can someone me with questions 12 and 13 plz.