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प्रश्न
Calculate the number of moles in 1.51 × 1023 molecules of NH4Cl.
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उत्तर
1.51 × 1023 molecules of NH4Cl
A number of moles = `"Number of molecules"/"Avogadro’s number" = (1.51×10^23)/(6.023×10^23)` = 0.25 moles.
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संबंधित प्रश्न
A gas cylinder can hold 1 kg of hydrogen at room temperature and pressure
1) Find the number of moles of hydrogen present.
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4) State the law that helped you to arrive at the above result.
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| Species Property | H2O | CO2 | Na atom | MgCl2 |
| No. of moles | 2 | - | - | 0.5 |
| No. of particles | - | 3.011×1023 | - | - |
| Mass | 36g | - | 115 g | - |
