38 . 100 mL of 10 N H 2 SO 4 is diluted to 800 mL. What is the molarity of the dilute acid solution?
(A) 16/10 M
(B) 8/10 M
(C) 10/8 M
(D) 10/12 M
(E) 5/8 M39 . Which of the following molecules contains both ionic and covalent bonds?
(A) C 6 H 14
(B) MgCl 2
(C) (NH 4 ) 2 SO 4
(D) H 2 O
(E) C 2 H 440 . Gas A is at 30°C and gas B is at 20°C. Both gases are at 1 atmosphere. What is the ratio of
the volume of 1 mole of gas A to 1 mole of gas B?
(A) 1:1
(B) 2:3
(C) 3:2
(D) 303:293
(E) 606:29341 . How will the equilibrium of the following reaction be affected if more chlorine is added?
PCl 5 (g) PCl 3 (g) + Cl 2 (g)