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प्रश्न
Define or explain the term:
Mole
उत्तर
Mole is the amount of a substance containing elementary particles like atoms, molecules or ions in 12 g of carbon - 12.
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संबंधित प्रश्न
Convert into mole.
22 g of carbon dioxide
Calculate the mass in grams of 0.17 mole of hydrogen sulphide, H2S. (Atomic masses : H = 1 u, S = 32 u)
Calculate the mole ratio of 240 g of calcium and 240 g of magnesium. (Ca = 40 u ; Mg = 24 u)
Define or explain the meaning of term 'molar volume'.
Correct the following statement :
Equal masses of all gases under identical conditions contain the same number of molecules.
Calculate the number of moles of methane in 0.80 g of methane.
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 |
Calculate the number of moles in 1.51 × 1023 molecules of NH4Cl.
How many grams are there in the following?
2 moles of the hydrogen molecule, H2.
Fill in the missing data in the Table
| Species Property | H2O | CO2 | Na atom | MgCl2 |
| No. of moles | 2 | - | - | 0.5 |
| No. of particles | - | 3.011×1023 | - | - |
| Mass | 36g | - | 115 g | - |
