calculate the gram molecular mass of water from the values of gram atomic mass ofhydrogen and of oxygen.gram atomic mass of hydrogen
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We know that atoms are smallest units of any matter. The chemical and physical properties of any state of matter is entirely depends upon their constituent atoms. Therefore it is necessary to calculate the mass of an atom so that we calculate the mass of a molecule also. The atomic and molecular mass can be represented in terms of "Mole concept". A mole can be defined as a collection of atoms whose mass is equal to the atomic mass in grams. The number of atoms in a mole is 6.02 x 1023. This number is known as Avogadro’s number.
One mole is the amount of substance that contains as many particles (atoms or molecules) as there are in 12.0 g of C-12 (Carbon 12). For example, the atomic mass of nitrogen is 14.00 amu. This means that a sample with a mass of 14.00 grams has 6.02 x 1023 atoms of nitrogen in it. In the same way, 1 mole H2O has the same number of molecules as in 18.015 g of H2O. Or one mole hydrogen molecule contains the same number of molecules as in 2.016 g of H2. The mass of one mole of a substance is known as Molar Mass which symbolized by M. The unit of M isg/mol. Let’s discuss the molar mass of some other atoms and molecules.
One mole is the amount of substance that contains as many particles (atoms or molecules) as there are in 12.0 g of C-12 (Carbon 12). For example, the atomic mass of nitrogen is 14.00 amu. This means that a sample with a mass of 14.00 grams has 6.02 x 1023 atoms of nitrogen in it. In the same way, 1 mole H2O has the same number of molecules as in 18.015 g of H2O. Or one mole hydrogen molecule contains the same number of molecules as in 2.016 g of H2. The mass of one mole of a substance is known as Molar Mass which symbolized by M. The unit of M isg/mol. Let’s discuss the molar mass of some other atoms and molecules.
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