Chemistry 1210 Quiz #4A Sept 30, 2002 Dr. B. Jackson

41. Code A

42. What is the chemical formula for cesium oxide?

a) CsO b) Cs₂O c) CsO₂

43. The radius of the calcium ion is ________ than the radius of the calcium atom.

a) larger b) smaller

44 - 46 Use the following answers

a) +1, +2 b) +2. +3 c) + 2, +4

44. What are the two valence states for copper (Cu)?

45. What are the two valence states for tin (Sn)?

46. What are the two valence states for mercury (Hg)?

47. Which of the following is the sulfate radical?

a) (SO) b) (SO₂) c) (SO₃) d) (SO₄) e) (SO₅)

48. What is the valence state for the nitrate radical?

a) +1 b) -1 c) -2 d ) -3

49. Balance

____P₄ + ____O₂ -------> _____P₄O₁₀

The sum of the coefficients is

a) 7 b) 6 c) 5 d) 4 e) 3

50. Balance

____ Al + ____ HBr ------> _____AlBr_{3 + ____} H₂

The coefficient for HBr is a) 2 b) 3 c) 4 d) 6

Ans: 41a; 42b; 43b; 44a; 45c; 46a; 47d; 48b; 49a; 50d

Wednesday, March 21, 2007 01:28:01 PM