A tank of nitrogen has a pressure of 2.5 atm and is combined with a tank of Ar with at final pressure of 3099 mmHg. What is the pressure of the Ar in mmHg? NOTE: convert the partial pressure of Ny to mmHg.

a. 1560 mmHg
b. 0.600 mmHg
C. 4.08 atm
d. 1199 mmHg

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?

Which of the following statements is false regarding aromaticity? a. the compound must be cyclic b. the compound must be fully conjugated c. the compound must be planar d.the number of electrons in the pi system must satisfy the hückel 4n+2 rule e. the compound must have a neutral charge

6what is the importance of water on earth? a) it keeps the top layer of the geosphere cool b) it allows life to exist c) it provides ice at the poles d) it creates earth's blue color from space