2. What is the formula for sodium nitrite?
a. Na(NO3)2
b. Na3N
c. NaN3 d.
NaNO2 e. Na2N3
3. In a compound such as CsCl, each cesium ion
is bonded to more than one chlorine ion. a. T b.
F
4. The correct systemmatic name for ClO2 is
a. chlorine oxide b.
chlorine dioxate c. chlorate
d. dioxygen chloride e. chlorine dioxide
5. What is the percent by weight of potassium in the hypothetical uranium compound, K3U?
a. 11.0%
b. 16.4% c. 33.0%
d. 39.7% e. 75.0%
6. What is the empirical formula for a compound that contains 92.3% carbon and 7.7% H?
a. CH
b. CH2 c.
CH4 d. CH3
e. C2H5
7. If 3 mol of C2H6 were
allowed to react with 10 moles of O2 according to the equation
below, which is the excess reagent , and how much remains after all the
limiting reagent is consumed?
2 C2H6 + 7 O2 --> 4
CO2 + 6 H2O
a. C2H6, 0.33 mol
b. C2H6, 0.14 mol
c. O2, 0.5 mol
d. O2, 1.66 mol
e. none of these
8. Which of the following symbols appears in the net ionic equation for the reaction between strongly conducting solutions of K2CrO4 and Pb(NO3)2? Hint: this is the test for lead ions.
a. CrO4 2-
b. Pb(NO3)2
c. KNO3 d.
K+ e. NO3
9. What amount of NaOH is titrated by 16.7 mL of 0.35 M H2SO4 according to the equation
2 NaOH + H2SO4 --> 2 H2O
+ Na2SO4
a. 0.0058 mol
b. 0.012 mol c. 0.023 mol
d. 0.037 mol e. 0.042 mol
10. What is the specific heat capacity of benzene if 200 J of heat is required to raise the temperature of 45 g of benzene by 4.23oC?
a. 0.95 b. 1.05 c. 1.87 . d. 2.2 x 103 e. 18.8