Asolution contains 100 mg/ml of a drug, and the recommended dose is 50 mg/lb. once a day. how much solution would be needed for one dose to be administered to a 20 kg patient?

a. 2.2 l
b. 220 ml
c. 22 l
d. 22 ml

20 kg * 2.2 lb/kg * 50 mg/lb * 1mL/100mg = 22 mL

Explanation:

The correct answer is option (D) 22mL

Explanation:

Solution:

Given:

liquid concentration = 100mg/mL

weight = 20kg

dosage = 50mg/lb

converting the dosage from mg/lb to mg/kg, we have

1kg = 2.2046lb

therefore, dosage = 50mg * 2.2046/kg = 110.23mg/kg

The required solution can be obtained using the formula below

Dose = weight in kg * dosage in mg/kg 1

liquid dose = dose/liquid concentration2

Substituting into equation 1, we have

Dose = 20kg * 110.23mg/kg =  2204.6mg

For liquid dose, substitute into equation 2

Liquid dose = 2204.6mg/100mg/mL

                                       22. 046mL

Approximately 22mL

Therefore, 22mL is needed to be administered to the 20kg patient

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.

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