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प्रश्न
Calculate the molar mass of the following substance:
Phosphorus molecule, P4 (atomic mass of phosphorus = 31)
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उत्तर
Molar mass of phosphorus molecule, P4 = 4 × atomic mass of S
= (8 × 32) u
= 124 u
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संबंधित प्रश्न
One of the following elements has an atomicity of ‘one’. This element is :
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(c) If the number of molecules of hydrogen in the cylinder is X, calculate the number of CO2 molecules in the cylinder with the same conditions of temperature and pressure.
(d) State the law that helped you to arrive at the above result.
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\[\ce{(NH4)2Cr2O7 -> N2 + Cr2O3 + 4H2O}\]
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| 1. | 8 g of O2 | - | 4 moles |
| 2. | 4 g of H2 | - | 0.25 moles |
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| 4. | 112 g of N2 | - | 0.5 moles |
| 5. | 35.5 g of Cl2 | - | 13 moles |
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