SAT Subject Test Chemistry,10 edition

65 . What would be the stoichiometric coefficient of hydrochloric acid in the following
equation?

....Cl 2    +   ...H 2 O    →   ...HCl  +   ...HClO 3

(A) 1

(B) 3

(C) 5

(D) 10

(E) 12

66 . A solid cube of iron whose edge is 4 inches weighs 20.8 lbs. What is the specific gravity of
this sample of iron? Water weighs 62.4 pounds per cubic foot.

(A) 4.5

(B) 5.2

(C) 9.0

(D) 27

(E) 324

67 . Inelastic collisions occur in

I. Real gases

II. Ideal   gases

III. Fusion reactions

(A) I   and II

(B) II  and III

(C) I   and III

(D) I   only

(E) II  only