Chapter 1.3, Problem 1.5AFP

Interpretation Introduction

Interpretation:

Kilograms of intravenous nutrient solution delivered to a hospital patient at a rate of 1.5 drops per second in $8.0\text{ h}$ is to be calculated. Also, a road map for the solution is to be drawn.

Concept introduction:

Mass is a physical quantity and its SI unit is kilograms $\left(\text{kg}\right)$. It is the measure of the quantity of the matter present in an object. The other units of mass are grams, milligrams.

The S.I unit of time is second $\left(\text{s}\right)$. The other units of time are minute $\left(\min \right)$ and hour $\left(\text{h}\right)$.

The conversion of one unit into another can be done using a proper conversion factor. Conversion factors are the ratios that relate the two different units of a quantity. It is also known as dimensional analysis or factor label method.

In the unit conversion problems, the given information is multiplied by the conversion factors to obtain the desired information. The unit conversion can be done as follows:

$\left(\cancel{\text{beginning unit}}\right)\left(\frac{\text{Final unit}}{\cancel{\text{beginning unit}}}\right)=\text{Final unit}$