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प्रश्न
Show by means of calculations that 5 moles of CO2 and 5 moles of H2O do not have the same mass. How much is the difference in their masses ?
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उत्तर
The mass of 5 moles of carbon dioxide and 5 moles of water is not the same. This has been proved below:
Mass of 5 moles of carbon dioxide:
Molar mass of carbon dioxide = (1 × 12) + (2 × 16) = 44g
We know that 44g of carbon dioxide represent 1 mole.
Therefore, 5 moles of carbon dioxide weigh = 5 × 44 = 220g
Mass of 5 moles of water:
Molar mass of water = (2 × 1) + (1 × 16) = 18g
We know that 18g of water represent 1 mole.
Therefore, 5 moles of water weigh = 5 × 18 = 90g
Hence, it is proved from the above calculation that the mass of 5 moles of carbon dioxide and water is not the same. 5 moles of carbon dioxide weigh 130g more than 5 moles of water.
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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.
2) What weight of CO2 can the cylinder hold under similar conditions of temperature and pressure? (H = 1, C = 12, O = 16)
3) If the number of molecules of hydrogen in the cylinder is X, calculate the number of CO2 molecules in the cylinder under the same conditions of temperature and pressure.
4) State the law that helped you to arrive at the above result.
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Calculate the mass of 0.1 mole of the following:
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Calculate the mass of 0.1 mole of the following:
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1 mole of nitrogen (______ g) +
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\[\ce{CaCl2} (aq) → {Ca^{2+} (aq) + 2{Cl}- (aq)}\]
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