Main characteristics of molecular mass1. the molecular mass is not there because it is a value compared to standard values.2. molecular mass is the mass of a substance 1 of 1 molecule molecule.3. the atomic mass, molecular mass is calculated from the combination, because the molecules resulting from the combination of atomic or molecular mass of the substance from a 1 to a standard value comparison.4. the standard mass values being compared must be equal in every molecule.To calculate the molecular mass of the substance.For example, you shall find the molecular mass of CaSO 4.2H atomic mass of 2O set Ca = 40, S = 32, O = 16, and H = 1.How to make a molecular mass of CaSO 4.2H 2O = atomic mass of all elements in the CaSO 4.2H 2O combined.= 40+32+(16 x 4)+2(2)+2(16)= 40 + 32 + 64 + 4 + 32 = 172.Thus, the molecular mass of CaSO 4.2H 2O = 172 replies.MOLMole is a unit of volume one of the agencies that have the same molecular grams. G. atomic or gram ion 4. a method as follows:1. the number of particles per mole of substance.There are a number of substances, all kinds of 1 mol 6.023 x 10 23 particle (6.023 x 10 23 is the volume check don numeral).Atomic particles are molecules. Ion electron, etc.• There are a number of elements such as Na 1 mol 6.023 x 10 23 atoms 6.023 x 10 23 molecules, or Na + 1 mol 6.023 x 10 23 ion number.There are a number of Cl 2 1 x 10 23 molecules MOL 6.023 x 6.023 x 10 23 atoms or two (there are 2 atoms, molecules, 1),Cl-1 mol 6.023 x 10 23 ion number.• There are a number of compounds, such as SO 3 1 10 23 molecules MOL 6.023 x 6.023 x 10 23 atoms, or 4 x (SO 3 1 2 H atoms, molecules composed of atoms and Atomic S 1, 4, 7, O atoms).
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