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प्रश्न
Calculate the number of moles of CO2 which contain 8.00 g of O2
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उत्तर
1 mole of CO2 contains O2 = 32g
So, CO2 having 8 gm of O2 has no. of moles = `8/32`
= 0.25 moles
संबंधित प्रश्न
Calculate the molar mass of the following substance:
Nitric acid, HNO3
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.
Explain with examples what is meant by a 'mole' of a substance.
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