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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?

The nurse is educating the parents of a child diagnosed with C. diff. on proper precautions for infection control. Which statement by the parents indicated to the nurse that more education is needed?

A child presents with drooling, dysphagia, and in a tripod position in an effort to maximize respirations. What action by the nurse needs further intervention?

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?

You have to retake a dental image because the original image was too light and is not diagnostic. Which of the following could you change to produce an image with increased density?

The error displayed in this molar periapical image is caused by incorrect _______ placement.Placing the _______ more _______ will correct or prevent this error.

When preparing to expose a molar bitewing with a bite tab, placing your index finger along the molar buccal or occlusal surfaces  will help you to visualize the curvature of the _______ and align the _______ .  These procedures will help you to achieve correct _______ angulation in the molar area and to direct the central ray through the _______

The geometric characteristic of _____ refers to an image that appears larger than the actual size of the object it represents.

List 4 ways to protect the patient from excessive radiation exposure during dental imaging procedures.

When using a portable, handheld dental x-ray unit like the NOMAD, operator exposure is limited by a lead acrylic disk shield around the PID.