Question

A child must take 10 mL of cephalexin, an antibiotic, by mouth 2 times a day for 11 days. The solution is provided as a 50 mg/mL suspension. How many milligrams will the child have taken when the course of medication is over?

Answer 1

Answer:Mass=1.1x10^4 mg

Step-by-step explanation:

Scientific Notation

Answer 2

`\boxed{\text{11 000 mg}}`

Step-by-step explanation:

(a) Calculate the number of doses.

`\text{Doses} = \text{11 da} * \frac{\text{2 doses }}{\text{1 da}} = \text{22 doses}`

(b) Calculate the total volume

`V = \text{ 22 doses} * \frac{\text{10 mL}}{\text{1 dose}} = \text{220 mL}`

(c) Calculate the total milligrams

`\text{Milligrams} = \text{ 220 mL} * \frac{\text{50 mg}}{\text{1 mL}} = \text{11 000 mg}\\\\\text{The child will have taken $\boxed{\textbf{11 000 mg}}$}`