Question #e2a52

2 Answers
Sep 14, 2017

Answer:

You left out the volume of the teaspoon....

Explanation:

But if the teaspoon is the standard #5*mL# volume, then the dosage is #3/2xx100*mg-=150*mg#.

It really is a bit of a schemozzle when we mix metric measures, with a child's mass in pounds. I think it is just asking for trouble. Errors in dosage always occur, and this whack mixture of units would compound the problem.

Sep 14, 2017

Answer:

The child would receive a dose of 0.15 g of ibuprofen.

Explanation:

#"Dose" = 1.5 color(red)(cancel(color(black)("tsp"))) × (4.93 color(red)(cancel(color(black)("mL"))))/(1 color(red)(cancel(color(black)("tsp")))) × (100. color(red)(cancel(color(black)("mg"))))/(5 color(red)(cancel(color(black)("mL")))) × "1 g"/(1000 color(red)(cancel(color(black)("mg")))) = "0.15 g"#

Note: The answer can have only two significant figures, because that is all you gave for the umber of teaspoons.