A respiratory therapist is humidifying oxygen for administration to a patient using a system with a flow of 12 L/min. Which type of humidification device is in use?

The ratio of substance X to substance Y in a solution is measured in two separate trials. The concentrations, ratios of X/Y, and log(X/Y) are presented in this table. Trial Concentration of X Concentration of Y Ratio X/Y log(X/Y) 1 20 10 2 0.301 2 10

A) 0.301 B) -0.301 C) 3.01 D) -3.01

The time of onset for symptoms from the chemical agents used by terrorists is _____.

a. Minutes to hours b. Days c. Seconds d. Weeks