Chemical equations are the symbolic representations of chemical reactions that are made up of reactants and products. It is made up of the chemical formulas of the reactants and the chemical formula of the products. The reactants are the substances or chemicals that takes part in during a reaction and the products are the chemicals … Read more
Hess’s Law and the Molar Enthalpy of Combustion for Magnesium Purpose:The purpose of the lab ultimately is to find the molar enthalpy of magnesium. This is done by finding the enthalpy changes of reactions (2) and (3). The enthalpy changes of reactions (2) and (3) along with the enthalpy change given for reaction (4) can … Read more
The purpose of this experiment was to find the identity of the unknown compound #12. This was done both qualitatively and quantitatively. The qualitative observations were used to determine the functional group that was in the unknown, the quantitative results were used to determine the molar mass through Duma’s method. The types of compounds that … Read more
Procedure: Day 1: Buffer preparation First, the buffer was prepared by using the formula as follows: Figure 1: Calculation for prepare 0. 5 M Tris buffer at pH 6. 8 3. 033 g of Tris was weighed and placed in 400 ml beaker. Then, 25 mL of distilled water was added into the beaker that … Read more
What does Avogadro’s number mean? It is the theory that’s given by the Italian chemist Amedeo Avogadro which states that “equal volumes of gases at the same temperature and pressure contain the same number of molecules regardless of their chemical nature and physical properties”. And the number of molecules or atoms in exactly 1 mole … Read more
