Category: Lab Notes: Laboratory Calculations

Ribose, a monosaccharide (simple sugar), is an organic compound of three elements: Carbon, Hydrogen and Oxygen. The molecular weight of Ribose (C5H10O5) is 150.1305 which can be calculated by adding up the total weights of carbon, hydrogen and Oxygen.

Strontium chloride (SrCl2) is an inorganic compound of two elements: Strontium (Sr) and Chlorine (Cl). The molecular weight of Strontium chloride is 158.5254 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of all its elements

Potassium chloride (KCl) is an inorganic compound of two elements: Potassium and Oxygen. The molecular weight of Potassium chloride (KCl) is 74.5483 which can be calculated by adding up the atomic weight of Potassium and Oxygen.

Calcium chloride (CaCl2) (CAS Registry Number: 10043-52-4) is an inorganic compound of two elements: Calcium and Chlorine. The molecular weight of Calcium chloride is 110.9854 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of all its elements.

Potassium hydroxide (KOH) is an inorganic compound of two elements: Potassium and Oxygen. The molecular weight of Potassium hydroxide (KOH) is 39.996769 which can be calculated by adding up the atomic weight of Potassium and Oxygen.

Sodium chloride (NaCl) is an inorganic compound of two elements: Sodium and Chlorine. The molecular weight of Sodium chloride is 58.44246928 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of Sodium and Chlorine.

Hydrogen fluoride (HF) is an inorganic compound of two elements: Hydrogen, and Fluorine. The molecular weight of Hydrogen fluoride is 20.006403163 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of all its elements.

A 37% (w/w) hydrochloric acid can be purchased from several suppliers. It is a clear colorless liquid and can be diluted to prepare solutions of known concentrations. Remember that the molarity of hydrochloric acid is equal to the normality of the solution, which means 1M solution is also a 1N solution. Here we describe a procedure to prepare 1M hydrochloric acid solution by diluting a 37% (w/w) concentrated hydrochloric acid solution.