9. Body surface area (BSA) is often used in place of body weight when determining medication dosages, since it serves as a better indicator of a patient's metabolic mass. BSA can be calculated in the following way, and gives an answer in units of meters squared (m²): (body mass in kg) × (height in cm) BSA = (gives units of m²) 3600 Calculate the BSA for a pediatric patient who is 25 pounds and 18 inches tall.
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
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