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प्रश्न
How many molecules are present in one gram molecular mass of a substance ?
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उत्तर
6.022 × 1023 molecules are present in one gram molecular mass of a substance.
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संबंधित प्रश्न
Calculate the molecular masses of the following compounds :
Hydrogen sulphide, H2S
Calculate the molecular masses of the following :
Oxygen, O2
(Atomic masses : H = 1 u ; O = 16 u ; Cl = 35.5 u ; N = 14 u ; C = 12 u)
Calculate the molecular masses of the following compounds :
Ethene, C2H4
(Atomic masses : C = 12 u ; H = 1 u)
Calculate the molecular masses of the following compounds :
Ethyne, C2H2
(Atomic masses : C = 12 u ; H = 1 u)
Calculate the formula masses of the following compounds :
- Calcium chloride
- Sodium carbonate
(Given : Atomic masses : Ca = 40 u ; Cl = 35.5 u ; Na = 23 u ; C = 12 u; O = 16 u)
Calculate the molar masses of the following substances. Write the results with proper units.
- Ozone molecule, O3
- Ethanoic acid, CH3COOH
Calculate the molecular mass of the following:
(NH4)2CO3
Given atomic mass of Cu = 63·5, H = 1, O= 16, C = 12, N = 14, Mg = 24, S = 32
Calculate the weight/mass of an atom of oxygen.
Calculate the relative molecular mass of CaSO4.
[S = 32, O = 16, Ca = 40]
Write the name of the following compound and deduce its molecular mass.
AlPO4
