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प्रश्न
Prove the Following :
One mole of any gas contains th e same number of molecules.
उत्तर
Since by definition of a mole it is defined as the amount (mass) of a substance containing elementary particles like atoms, molecules or ions equal to Avogadro's number i .e. 6 .023 x 1023 so one mole of any gas contains th e same number of molecules.
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संबंधित प्रश्न
Calculate the molar mass of the following substance:
Nitric acid, HNO3
What is the mass of 1 mole of nitrogen atoms?
What is the mass of 0.2 mole of oxygen atoms?
What is the mass of 0.5 mole of water molecules?
Fill in the following blanks :
A mole represents an .............. number of particles of a substance.
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Calculate the mass of 0.1 mole of the following:
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(Ca = 40, Na=23, Mg =24, S=32, C = 12, Cl = 35.5, O=16, H=1)
Match the following.
| 1. | 8 g of O2 | - | 4 moles |
| 2. | 4 g of H2 | - | 0.25 moles |
| 3. | 52 g of He | - | 2 moles |
| 4. | 112 g of N2 | - | 0.5 moles |
| 5. | 35.5 g of Cl2 | - | 13 moles |
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(Mass of an electron = 9.1×10–31 kg)
If 0.2 mol of the following substance is required how many grams of that substance should be taken?
Calcium carbonate
