Acids and Bases – Acids, Bases, and Conjugates – Solution Chemistry – Level 2 Weak acids when completely neutralized by a strong base will have a pH…

Acids and Bases – Level 3 How many stoichiometric equivalencies of Sodium Hydroxide are required to neutralize Oxalic Acid?

Charge States of Elements and Ions – Level 1 What is the oxidation number of elemental sodium?

Polyatomic Ions and Charges – Level 2 What is the typical charge found on the anion(s) and cation(s) in sodium phosphate (aq.)?

Molecular Weights – Level 1 Determine the molecular weight of Lithium Carbonate.(Acceptable error ~5%)

Data Comprehension – Solubility Rules – Level 2 Use the table below for any solubility related questions.   Which of the following molecules would be soluble in water?

Acids and Bases – Titration of Vinegar – Level 3 11.89 mL of 0.470 M sodium hydroxide (NaOH) was needed to titrate a 9.98 mL sample of vinegar that was being tested for FDA approval. What is the weight percent of acetic acid in the vinegar sample? Given: Vinegar Solution Density = 1.005 g/mL

Types of Error – Level 2 A student accidentally forgets to tare the scale for every measurement and as a result, the masses are approximately 0.2g too high consistently.  Which of the following types of errors best fits the scenario?

Density and Concentration – Level 3 A series of several standard solutions of varying concentrations were prepared by a chemistry lab instructor for students to use in lab. The density of these solutions were measured and the following calibration curve was constructed.  The students were given data for two unknowns (Unknown A and B) .  The density of Unknown A was 1.0921 g/mL.The concentration of Unknown B was 1.756 M. What is the concentration of Unknown A and the density of Unknown B?

A 4-month-old infant is brought to the clinic to have a second diphtheria, tetanus, and pertussis (DTaP) vaccine. The infant’s mother states that the infant has had a runny nose for the last 2 days but no fever. Prior to administering the infant’s immunization, which question from the nurse to the mother is the most appropriate?