A 10-month-old boy presents to the emergency department at 10 pm with a history of three days of low-grade fever and rhinorrhea, followed by one day of barking cough and difficulty breathing. The child’s cough has been progressively getting worse.  He is eating poorly, but there is no emesis or diarrhea. There is no significant past medical history, and the mother states all his vaccinations are up-to-date. No one else in the household is currently ill.  The child lives with his mother and a 2-year-old sister and attends day care. On physical exam he has a temperature of 101.3°F, elevated respiratory rate of 48/min, and normal heart rate and blood pressure. On lung exam, there are subcostal inspiratory muscle retractions and on auscultation, a high-pitched inspiratory stridor is present. The patient’s symptoms are most likely caused by which of the following conditions?

What is the formula for calculating Enthalpy.

A ton of refrigeration is equal to the heat energy required to melt one ton of ice in _____.

The temperature at which all heat is removed is called_______?

A substance’s atoms ____ when heat is removed from the substance.

If 200 N•m of work is required to move an object 20 m, how much force is applied to the object?

Convert 657 degrees Fahrenheit to Celsius

Energy applied to matter that causes a change in the matter’s velocity is called _____.

In a properly operating refrigeration system, saturated vapor would most likely be found in the _____.

The ratio of the mass of a certain volume of a gas as compared to the mass of an equal volume of hydrogen is called _____.