CHEM 1311 Final Exam Questions &
Answers (Grade A+)
Elements from opposite sides of the periodic table tend to form
what? -
correct answer ✅Ionic compounds
Which of the following has three significant figures? -
correct answer ✅0.0803
Predict the empirical formula of the ionic compound that forms
from aluminum and oxygen? -
correct answer ✅Al2O3
Which of the following would be the appropriate pH for a
substance that tastes bitter, produces hydroxide ions in solution
and ionizes completely(100%)? -
correct answer ✅13
Which one of the compounds is chromium (iii) oxide? -
correct answer ✅Cr2O3
how many lone pairs are on the central atom lewis structure for
CCl4? -
correct answer ✅12
, CHEM 1311 Final Exam Questions &
Answers (Grade A+)
OIL and water do not mix. Which of the following best describes
why this occurs? -
correct answer ✅Water is polar, while oil is nonpolar, which
means that they will not mix.
How many unpaired electrons are there in the Lewis structure of a
N3- ion? -
correct answer ✅0
Of the following, which gives the correct order for atomic radius fo
Mg, Na, P, Si and Ar? -
correct answer ✅Na>Mg>Si>P>Ar
When 0.500 mol of HC2H3O2 is combined with enough water to
make 300 mL solution, the concentration of the HC2H3O2 is? -
correct answer ✅1.67M
The balanced equation for the decomposition of sodium azide is? -
correct answer ✅2NaN3->2Na(s)+3N2(g)
Answers (Grade A+)
Elements from opposite sides of the periodic table tend to form
what? -
correct answer ✅Ionic compounds
Which of the following has three significant figures? -
correct answer ✅0.0803
Predict the empirical formula of the ionic compound that forms
from aluminum and oxygen? -
correct answer ✅Al2O3
Which of the following would be the appropriate pH for a
substance that tastes bitter, produces hydroxide ions in solution
and ionizes completely(100%)? -
correct answer ✅13
Which one of the compounds is chromium (iii) oxide? -
correct answer ✅Cr2O3
how many lone pairs are on the central atom lewis structure for
CCl4? -
correct answer ✅12
, CHEM 1311 Final Exam Questions &
Answers (Grade A+)
OIL and water do not mix. Which of the following best describes
why this occurs? -
correct answer ✅Water is polar, while oil is nonpolar, which
means that they will not mix.
How many unpaired electrons are there in the Lewis structure of a
N3- ion? -
correct answer ✅0
Of the following, which gives the correct order for atomic radius fo
Mg, Na, P, Si and Ar? -
correct answer ✅Na>Mg>Si>P>Ar
When 0.500 mol of HC2H3O2 is combined with enough water to
make 300 mL solution, the concentration of the HC2H3O2 is? -
correct answer ✅1.67M
The balanced equation for the decomposition of sodium azide is? -
correct answer ✅2NaN3->2Na(s)+3N2(g)
