Question

An injection of 4 mg of Valium has been prescribed for a patient suffering from muscle spasms. A bottle of Valium labeled 5 mg/mL is on hand. How many mL should be injected?

Answer 1

Given the patient is suffering from muscle spasms.

The mass of Valium to be injected to the patient suffering from muscle spasms =4 mg

Given the bottle of valium with a density of 5 mg/mL

We know that, Density =
`(Mass)/(Volume)`

Volume =
`(Mass)/(Density)`

Mass = 4 mg Valium

Density = 5
`(mg)/(mL)`

Calculating the volume from mass and density:

Volume of valium to be injected
`= 4 mg *(1mL)/(5mg)`=0.8mL

Therefore, a volume of 0.8 mL of valium is to be injected to the patient.