The chemical formula of hydrocortisone valerate is C26H38O6. First, we determine the molar mass of the substance by adding up all the products of the number of atoms and the molar mass of atoms as shown below. molar mass = 26(12) + 38(1) + 6(16) = 446 g/mol Since, there are 26 atoms of carbon in each molecule, the mass of carbon in each mole is mass of carbon = (26)(12) = 312 Obtaining the percent by mass of carbon, % by mass of carbon = (312/446) x 100 % = 69.955% Thus, the percent by mass of carbon in hydrocortisone valerate is approximately 69.96%.
<h3> <em>Aluminum would be the best choice to reuse copper from the copper chloride solution because it In the aluminum–copper reaction, the chloride ions help remove the aluminum oxide coating so that a reaction can take place through the oxidation of aluminum and the reduction of copper ions.The aluminum–copper chloride reaction is a simplified version of a waste reclamation and reduction strategy for handling toxic-waste materials. </em></h3>
