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प्रश्न
How many grams of H2O are present in 0.2 mole of it?
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उत्तर
1 mole of water weighs = (1 x 2) + 16 = 18 g
∴ 0.2 mole of H2O has mass = 0.2 x 18 = 3.6 g
संबंधित प्रश्न
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A mole represents an .............. number of particles of a substance.
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| 1. | 8 g of O2 | - | 4 moles |
| 2. | 4 g of H2 | - | 0.25 moles |
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