Question

1.The physician has ordered 155mg of dilantin for a patient every 8 hours. The patient weighs 101 pounds. The label on the Dilantin reads 265mg per 5.0mL. How many mL will you administer to this patient per dose? Give your answer to one decimal place.

2. Describe if the following reaction or phase change is exothermic or endothermic a) Steam on the windows during winter months

Answer 1

1)

Mass of dilantin has ordered = 155mg

5.0ml of labeled Dilantin = 265mg

Volume of labeled Dilantin required = 5.0ml×(155g÷265g) = 2.9245ml

= 2.9ml (answer)

2)steam(moisture in air) inside the room comes in contact with glass on window. Temperature of glass window is less than that of room temperature. Water vapour will condense.

H₂O(g) H₂O(l) ∆H=-ve

Hence exothermic reaction.