Capillaries are the smallest and most fragile of the body's blood vessels. They are responsible for what is known as microcirculation, meaning that they create a circulatory network within the organs of the body. There are three different types found in the human body: continuous, fenestrated, and sinusoidal.
1 Find the empirical formula. 2  Get the mass of each element by assuming a certain overall mass for the sample (100 g is a good mass to assume when working with percentages). 3  Convert the mass of each element to moles.  Find the ratio of the moles of each element.
The percent composition (percentage composition) of a compound is a relative measure of the mass (or weight) of each different element present in the compound. % by mass of oxygen + % by mass of hydrogen = 100 % (% by mass of water molecule).For any element present in any molecule:And, if you add together the % by mass of every element present in the compound the result will be 100%. a Y b Z c :Calculate the percent by mass (weight) of sodium (Na) and chlorine (Cl) in sodium chloride (NaCl). Calculate the percent by mass (weight) of each element present in sodium sulfate (Na 2 SO 4). by mass of oxygen + % by mass of hydrogen = 100 % (% by mass of water molecule). For any element present in any molecule: And, if you add together the % by mass of every element present in the compound the result will be 100%. a Y b Z c :