Quiz #1
General chemistry 7/3/02

1.

Isotope # protons # neutrons # electrons
33S 16 17 16
34S 16 17 16
36S 16 20 16

2. Anions: oxygen, bromine
    Cations: Sodium, Hydrogen
    Neutral: Helium

3. tetrahedral

4. 2HNO2 --> H2 + N2 +2O2

5. (a) 50.0 g NH3 x 1 mole NH3   x 1 mole BF3 x   68 g               = 200 g
                                17 g              1 mole NH3    1 mole BF3

    (b) 50.0 g NH3 x 1 mole NH3   x 1 mole BF3NH3  x        85 g             = 250 g
                                17 g              1 mole NH3             1 mole BF3NH3