| Assessment Questions: 31 results |
Sulfur Chemistry (3 Variations)
A collection of 3 assessment questions about Sulfur Chemistry
Organosulfur Compounds |
Lewis Structures |
Reactions |
Synthesis
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Solutions : FreezePtDepression (20 Variations)
It takes 6.86 kg of ethylene glycol (antifreeze) to decrease the freezing point of 6.50 kg of water to -25.0oF (-31.7oC). How much sodium chloride (NaCl) would it take to decrease the freezing point of 6.50 kg of water to -25.0oF? (Assuming all the salt will dissolve in that amount of water.)
Solutions / Solvents
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Solutions : GeneralSolutions (10 Variations)
You have 500.0mL of 0.100M aqueous MgBr2. Which of the following statements are true?
Solutions / Solvents
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Solutions : SolnPrepProcedure (10 Variations)
You want to prepare 250mL of a 0.0150M solution of KCl. Which of the following procedures would give you the best results?
Solutions / Solvents
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Solutions : SolutionNanoPics (4 Variations)
The drawings below represent flasks of aqueous solutions. Each pink dot represents a dissolved solute particle.
Which of the following solutions is most concentrated?
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500 mL
Solution A
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500 mL
Solution B
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500 mL
Solution C
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250 mL
Solution D
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250 mL
Solution E
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250 mL
Solution F
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Solutions / Solvents
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Solutions : IonConcentration (4 Variations)
Which of the following solutions has the greatest concentration of Na+ ions?
Solutions / Solvents |
Chemometrics
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Solutions : MassSoluteInSoln (10 Variations)
What is the mass of the solute in 500mL of 0.341M ammonium chloride?
Solutions / Solvents |
Chemometrics
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Solutions : RelativeConc (4 Variations)
What are the relative concentrations of the ions in 0.10 M aqueous sulfuric acid?
Solutions / Solvents |
Stoichiometry
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Solutions : ReverseOsmosis (20 Variations)
You are given a water sample that contains ammonium chloride (NH4Cl). You determine the concentration of the salt to be 0.500 M and decide to purify the water using reverse osmosis. What is the minimum pressure that must be applied at 30.0oC to force the water through the membrane?
Solutions / Solvents |
Transport Properties
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Solutions : SolnConcAfterMixing (4 Variations)
10 mL of 0.1 M BaCl2(aq) is mixed with 10 mL of 0.1 M AgNO3(aq). What are the concentrations of the ions in the final mixture?
Solutions / Solvents |
Chemometrics
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Solutions : SolnPrepByDilution (10 Variations)
For the analysis of trace metals it is necessary to prepare solutions of very low concentrations from a stock solution of higher concentration using a micropipet and a volumetric flask. What volume of a 0.0010 M solution of Zn(NO3)2 (aq) would be required to prepare a 5.0 nM solution of Zn2+ in a 250mL flask?
Solutions / Solvents |
Chemometrics
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Solutions : SolnPrepByMass (4 Variations)
You are required to prepare 5 L of a solution containing 1.000 x 10-3 mol/L of Cu2+(aq). Which of the following procedures would produce an appropriate solution?
Solutions / Solvents |
Chemometrics
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Solutions : ConvertConcUnits (10 Variations)
The maximum concentration of arsenic in drinking water that is allowed by the EPA is 0.050 mg/L. Express this as a weight percent. (You can assume the density of the water solution is 1.0g/mL.)
Solutions / Solvents |
Nomenclature / Units / Symbols |
Chemometrics
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Solutions : GramsToMolalSoln (20 Variations)
How many grams of citric acid need to be added to 750 ml of ethanol to make a 0.50 m solution?
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Density (g/ml)
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Molecular Weight (g/mol)
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Citric acid
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1.665
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192.14
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Ethanol
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0.7893
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46.07
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Solutions / Solvents |
Nomenclature / Units / Symbols |
Chemometrics
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Solutions : MixturesMolcPics (11 Variations)
Which of the following combinations of substances corresponds to the molecular scale diagram shown below?
Solutions / Solvents |
Noncovalent Interactions |
Precipitation / Solubility
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Solutions : WtPercentToMolarity (4 Variations)
A common concentration unit used commercially is percent weight per volume (%W/V) which is the number of grams of solute in 100 mL of solution. A bottle of vinegar contains 5 %W/V acetic acid (CH3COOH). What is the molar concentration of acetic acid in the vinegar?
Solutions / Solvents |
Nomenclature / Units / Symbols |
Chemometrics
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Solutions : CalcMolarityFromPPT (10 Variations)
You are given a water sample to analyze from a lake contaminated with lead. It takes 24 mL of 0.020 M NaCl to exactly precipitate the Pb2+ ions from 61 mL of the water sample. What is the concentration of Pb2+ ions in the water?
Pb2+(aq) + 2NaCl(aq) PbCl2(s) + 2Na+(aq)
Solutions / Solvents |
Nomenclature / Units / Symbols |
Chemometrics
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Epoxides (5 Variations)
A collection of 5 assessment questions about Epoxides
Epoxides |
Reactions |
Oxidation / Reduction |
Synthesis
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Enamines (6 Variations)
A collection of 6 assessment questions about Enamines
Aldehydes / Ketones |
Amines / Ammonium Compounds |
Synthesis
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Carbohydrates (17 Variations)
A collection of 17 assessment questions about Carbohydrates
Carbohydrates |
Reactions |
Enantiomers |
Diastereomers |
Oxidation / Reduction |
Synthesis
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Anhydrides (2 Variations)
A collection of 2 assessment questions about Anhydrides
Carboxylic Acids |
Mechanisms of Reactions |
Esters |
Synthesis
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Acyl Chlorides (5 Variations)
A collection of 5 assessment questions about Acyl Chlorides
Carboxylic Acids |
Synthesis |
Grignard Reagents |
Alcohols |
Aldehydes / Ketones
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Aldol Reactions (30 Variations)
A collection of 30 assessment questions about Aldol Reactions
Aldehydes / Ketones |
Esters |
Amides |
Carboxylic Acids |
Mechanisms of Reactions |
Acids / Bases |
Reactions |
Synthesis |
Elimination Reactions |
Resonance Theory
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Synthesis (11 Variations)
A collection of 11 assessment questions about Synthesis
Aldehydes / Ketones |
Synthesis |
Esters |
Oxidation / Reduction |
Alkynes |
Organometallics |
Alcohols |
Electrophilic Substitution
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Amino Acids (10 Variations)
A collection of 10 assessment questions about Amino Acids
Amino Acids |
Stereochemistry |
Acids / Bases |
Amines / Ammonium Compounds |
Carboxylic Acids |
Nucleic Acids / DNA / RNA |
Proteins / Peptides |
Synthesis |
Aldehydes / Ketones
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Aromatic (26 Variations)
A collection of 26 assessment questions about Aromatic
Aromatic Compounds |
Nomenclature / Units / Symbols |
Reactions |
Electrophilic Substitution |
Mechanisms of Reactions |
Oxidation / Reduction |
Resonance Theory |
Addition Reactions |
Carbocations |
Synthesis
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Carboxylic Acids (14 Variations)
A collection of 14 assessment questions about Carboxylic Acids
Carboxylic Acids |
Acids / Bases |
Esters |
Amides |
Reactions |
Synthesis |
Grignard Reagents |
Ethers |
Oxidation / Reduction |
Alkenes |
Heterocycles |
Amines / Ammonium Compounds |
Aldehydes / Ketones
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Phenols and Aryl Halides (9 Variations)
A collection of 9 assessment questions about Phenols and Aryl Halides
Phenols |
Acids / Bases |
Reactions |
Alcohols |
Amines / Ammonium Compounds |
Carboxylic Acids |
Aromatic Compounds |
Ethers |
Alkylation |
Synthesis |
Esters |
Electrophilic Substitution
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Alcohols and Ethers (22 Variations)
A collection of 22 assessment questions about Alcohols and Ethers
Alcohols |
Synthesis |
Oxidation / Reduction |
Aldehydes / Ketones |
Alkenes |
Carboxylic Acids |
Grignard Reagents |
Ethers |
Reactions |
Mechanisms of Reactions |
Organometallics |
Nomenclature / Units / Symbols |
Physical Properties
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Amines (30 Variations)
A collection of 30 assessment questions about Amines
Amines / Ammonium Compounds |
Synthesis |
Acids / Bases |
Reactions |
Amides |
Electrophilic Substitution |
Stereochemistry |
Carboxylic Acids |
Oxidation / Reduction |
Aldehydes / Ketones |
Alkanes / Cycloalkanes |
Dyes / Pigments |
Grignard Reagents
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Organometallic (13 Variations)
A collection of 13 assessment questions about Organometallic
Organometallics |
Grignard Reagents |
Epoxides |
Alcohols |
Esters |
Alkanes / Cycloalkanes |
Aldehydes / Ketones |
Synthesis |
Ethers |
Aromatic Compounds |
Reactions |
Carboxylic Acids |
Alkenes |
Amines / Ammonium Compounds |
Acids / Bases |
Alkynes
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