differentiate between the following with examples : 1 :molecule and gram molecule 2: atom and gram atom 3: molecular mass and molar mass 4: chemical formula and gram formula
Answers
*molecular mass
It is a number equal to the sum of the atomic masses of all the atoms in a molecule. It is relative to the 12C, which has a mass of 12.
gram molecular mass
It is the mass in grams of 1 mole of a molecular substance.
*If you say 10 grams OF atoms, it can be 10 grams of any atoms. Could be 10 grams of Hydrogen atom or Oxygen atoms or Na atoms. And the number of atoms in each of this samples will be different. "Gram of atoms" is in the normal English sense.
*Molecular weight is the mass of one molecule of a compound, while molar mass is the mass of one mole of a compound
*formula mass and molar mass is that, the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula while molar mass is the mass in grams of 1 mol of substance.
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