Overview
1. The correct formula for aluminum nitrate is
(a) Al3N2
(b) Al3(NO3)
(c) Al(NO2)3
(d) Al(NO3)3
2. A substance releases heat when it changes from
(a) liquid to solid
(b) solid to gas
(c) liquid to gas
(d) solid to liquid
3. Given the balanced equation: 2H2(g) + O2(g) --> 2H2O(l)
How many grams of H2O are formed if 9.00 mol H2(g) reacts completely with an excess of O2(g)?
The molar mass of H2O is 18.0g/mol.
(a) 18.0g
(b) 36.0g
(c) 81.0g
(d) 162g
4. Which element has exactly five electrons in the highest principal energy level (the outer shell)?
(a) Se
(b) Ba
(c) P
(d) Ge
5. Which element is a metal?
(a) Se (atomic number = 34)
(b) Co (atomic number = 27)
(c) C (atomic number = 6)
(d) Br (atomic number = 35)
6. What volume of 1.5M NaOH is needed to provide 0.75 mol of NaOH?
(a) 500L
(b) 5.0 L
(c) 500 mL
(d) 0.75 L