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.
Molecular formulas are different types. Before talking about formula weight or molecular weight, it is necessary to know what are a molecular formula and an empirical formula. Molecular formula is the formula which shows all the atoms in a molecule. For example, the molecular formula of glucose is C6H12O6. So a glucose molecule contains six carbon and oxygen atoms and twelve hydrogen atoms. Empirical formula shows the simplest ratio of the number of atoms in a molecule. For example, CH2O is the empirical formula of glucose.