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प्रश्न
Fill in the following blanks :
A mole represents an .............. number of particles of a substance.
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उत्तर
A mole represents the Avogadro number of particles of a substance.
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संबंधित प्रश्न
Fill in the following blanks :
64 g of oxygen gas contains ................ moles of oxygen atoms.
What name is given to the amount of substance containing this number of atoms ?
How many atoms are there in 0.25 mole of hydrogen ?
Show by means of calculations that 5 moles of CO2 and 5 moles of H2O do not have the same mass. How much is the difference in their masses ?
Fill in the blank
Avogadro's number is equal to ______
Calculate the number of moles and number of molecules present in 1.4 g of ethylene gas. What is the volume occupied by the same amount of ethylene?
Find the number of molecules in 3.2 g of SO2.
How many grams of Al are present in 0.2 mole of it?
Correct the statement, if required.
One mole of chlorine contains 6.023 x 1010 atoms of chlorine.
Calcium chloride when dissolved in water dissociates into its ions according to the following equation.
\[\ce{CaCl2} (aq) → {Ca^{2+} (aq) + 2{Cl}- (aq)}\]
Calculate the number of ions obtained from CaCl2 when 222 g of it is dissolved in water.
