CHEMISTRY FINAL EXAM REVIEW
QUESTIONS & ANSWERS VERIFIED BY
EXPERTS
y What is the molarity of a 200mL solution in which 0.2 mole of sodium bromide is dissolved ? - 1.0M
What is the percent by mass of a water solution that contains 60 g of calcium chloride, CaCl2, and that
has a mass of 400g ? - 15%
What is the percent by mass of a solution containing 25 g of NaCl in 175 g of solution ? - 14%
You need to prepare 500.0 mL of 0.750M NaBr solution using a stock solution with a concentration of
2.50M NaBr. Which expression should you use to calculate how much stock solution you need ? - 0.75M
* 500.0mL / 2.5M
What type of reaction is indicated by this general equation ?
AB -> A + B - Decomposition Reaction
In a solution, what is the solvent ? - The medium in which particles are dissolved
If ammonia reacts according to the following equation, how many kilograms of NO could be actually
produced from 10.0kg of NH3 if the percent yield of NO is 80.0% - 14.1 kg NO
The molarity of a solution that contains 14g KOH per 150 mL of solution is : - 1.7M
What volume of 1.25M HCL would be required to prepare 180mL of a 0.500M HCL solution ? - 72mL
, What is the percent by mass of a solution containing 25 g of NaCl in 175 g of solution ? - 14%
What is the molality of a solution prepared by dissolving 13.0g of Ba(NO3)2 in 450 g of water ? - 0.11
molal
Given the reaction CaCo3-> CaO+ CO2 , if 50.0g of CaCO3, react to actually produce 20.0g of CO2. What
is the percent yield of CO2 ? - 40.0%
Given the equation 2H2O -> 2H2+ O2 - Decomposition
To 225mL of a 0.80M solution of KI, a student adds enough water to make 1 L of a more dilute KI
solution. What is the molarity of the new solution ? - 0.18M
What type of reaction is shown ? 2Na +2H2o-> 2NaOH +H2 - Single Replacement
A scientists adds 10mg of sodium chloride (NaCl) to 100 mL of water and stirs until the sodium chloride
dissolves. What is the solute in this process ? - Sodium Chloride
A sugar cube is dropped into a glass of water. The water is stirred until the sugar cube is no longer visible.
Which of these statements is correct ? - A solution has formed and sugar is the solute
Identify the single-replacement reaction. - 2Al + 3Fe(NO3)2 -> 2Al(NO3)3 +3Fe
Which formula shows how to calculate the percent yield of a reaction ? - actual / theoretical x 100%
A reaction that has been calculated to produce 60.0 g of CuCl2 actually produces 50.0 g of CuCl2. What is
the percent yield ? - 83.3%
What is the molarity of a solution that contains 8 moles of solute in 2 L of a solution ? - 4M
What is the molar mass of Fe(OH)3 - 107 grams/mol
QUESTIONS & ANSWERS VERIFIED BY
EXPERTS
y What is the molarity of a 200mL solution in which 0.2 mole of sodium bromide is dissolved ? - 1.0M
What is the percent by mass of a water solution that contains 60 g of calcium chloride, CaCl2, and that
has a mass of 400g ? - 15%
What is the percent by mass of a solution containing 25 g of NaCl in 175 g of solution ? - 14%
You need to prepare 500.0 mL of 0.750M NaBr solution using a stock solution with a concentration of
2.50M NaBr. Which expression should you use to calculate how much stock solution you need ? - 0.75M
* 500.0mL / 2.5M
What type of reaction is indicated by this general equation ?
AB -> A + B - Decomposition Reaction
In a solution, what is the solvent ? - The medium in which particles are dissolved
If ammonia reacts according to the following equation, how many kilograms of NO could be actually
produced from 10.0kg of NH3 if the percent yield of NO is 80.0% - 14.1 kg NO
The molarity of a solution that contains 14g KOH per 150 mL of solution is : - 1.7M
What volume of 1.25M HCL would be required to prepare 180mL of a 0.500M HCL solution ? - 72mL
, What is the percent by mass of a solution containing 25 g of NaCl in 175 g of solution ? - 14%
What is the molality of a solution prepared by dissolving 13.0g of Ba(NO3)2 in 450 g of water ? - 0.11
molal
Given the reaction CaCo3-> CaO+ CO2 , if 50.0g of CaCO3, react to actually produce 20.0g of CO2. What
is the percent yield of CO2 ? - 40.0%
Given the equation 2H2O -> 2H2+ O2 - Decomposition
To 225mL of a 0.80M solution of KI, a student adds enough water to make 1 L of a more dilute KI
solution. What is the molarity of the new solution ? - 0.18M
What type of reaction is shown ? 2Na +2H2o-> 2NaOH +H2 - Single Replacement
A scientists adds 10mg of sodium chloride (NaCl) to 100 mL of water and stirs until the sodium chloride
dissolves. What is the solute in this process ? - Sodium Chloride
A sugar cube is dropped into a glass of water. The water is stirred until the sugar cube is no longer visible.
Which of these statements is correct ? - A solution has formed and sugar is the solute
Identify the single-replacement reaction. - 2Al + 3Fe(NO3)2 -> 2Al(NO3)3 +3Fe
Which formula shows how to calculate the percent yield of a reaction ? - actual / theoretical x 100%
A reaction that has been calculated to produce 60.0 g of CuCl2 actually produces 50.0 g of CuCl2. What is
the percent yield ? - 83.3%
What is the molarity of a solution that contains 8 moles of solute in 2 L of a solution ? - 4M
What is the molar mass of Fe(OH)3 - 107 grams/mol
