The enzymes catalase combine two hydrogen peroxide molecules(H20+H2O) to make two molecules of water 2H2O). A gas forms. What is the gas and how do you know this?

Palmitic acid is one of fatty acids found in butter. It is a saturated fatty acid containing 16 carbon atoms. A student performed the reaction between palmitic acid and methanol in the presence of acid catalyst to give the corresponding ester. 1. Draw the reaction occurred in this experiment! 2. Given that enthalpy of formation palmitic acid, methyl palmitate, methanol and water are -764, -726, -238, -285 KJ/mol, respectively. Determine the enthalpy of the reaction! 3. Methyl palmitate can be utilized as a starting material in the production of soap through saponification reaction. Draw the reaction occurred in this process!

The concept of determining which reactant is limiting and which is in excess is akin to determining the number of sandwiches that can be made from a set number of ingredients. Assuming that a cheese sandwich consists of 2 slices of bread and 3 slices of cheese, determine the number of whole cheese sandwiches that can be prepared from 36 slices of bread and 51 slices of cheese.

Fumaric acid, H2C;H;O4, is a diprotic acid (K,1 = 9.3 x 104, Ka2 = 3. i x 10). Physiologically, it is an intermediate in the Krebs Cycle which produces energy by the oxidation of carbon to carbon dioxide. Ifblood is buffered at 7.4, which statement is TRUE? The dominant species is H;CaH;O4 The dominant species is HC4H:04 The dominant species is Call:0. There are comparable amounts of H:C4H2O4 and HC4H2O4 There are comparable amounts olHCH:O, and CAH:0