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____ 158. Which response includes all the elements below whose compounds with hydrogen would be expected to be<br />
molecular hydrides, and no others?<br />
Br, K, P, B<br />
a. K, B<br />
b. Br, P<br />
c. K, Br<br />
d. Br, P, B<br />
e. Br<br />
____ 159. Which one of the following hydrides is basic?<br />
a. H2Te<br />
b. B2H6<br />
c. CaH2<br />
d. HI<br />
e. CH4<br />
____ 160. What would be the general balanced equation for the reaction of the ionic hydride MH2 with excess water?<br />
a. MH2(s) + H2O(l) MOH(aq) + H2(g)<br />
b. MH2(s) + H2O(l) MO(s) + 2H2(g)<br />
c. MH2(s) + H2O(l) MH2(s) + H2O(g)<br />
d. MH2(s) + 2H2O(l) M(OH)2(aq) + 2H2(g)<br />
e. MH2(s) + 3H2O(l) MO(s) + 4H2(g) + O2(g)<br />
____ 161. Write the balanced formula unit equation for the reaction of magnesium with hydrochloric acid. What is the<br />
sum of the coefficients? Don't forget coefficients of one. Use the smallest whole number coefficients.<br />
a. 5<br />
b. 6<br />
c. 3<br />
d. 4<br />
e. none of these<br />
____ 162. Which of the following statements about oxygen is false?<br />
a. The most common form of oxygen is a diatomic molecule.<br />
b. Ozone is an allotrope of oxygen.<br />
c. Both ozone and oxygen are oxidizing agents.<br />
d. Oxygen forms binary compounds with nonmetals called acid anhydrides.<br />
e. Oxygen forms basic nonmetal oxides.<br />
____ 163. Which one of the following compounds is a superoxide?<br />
a. Na2O2<br />
b. SrO<br />
c. KO2<br />
d. Li2O<br />
e. Cl2O7<br />
____ 164. Which of the following statements about binary oxides is false?<br />
a. Basic oxides are molecular.<br />
b. Some oxides like BeO are amphoteric.<br />
c. Nonmetal oxides are usually acidic.
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