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प्रश्न
How many grams of HCl are present in 0.1 mole of it?
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उत्तर
1 mole of HCI has weight = 1 + 35.5 = 36·5 g
∴ 0.1 mole of HCl has mass = 0.1 x 36.5
= 3.65 g
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.
Fill in the following blanks :
A mole represents an .............. number of particles of a substance.
What name is given to the amount of substance containing this number of atoms ?
Fill in the blank.
One a.m.u. is the mass of ______ atom of C12.
Calculate the weight of one molecule of oxygen.
[Avogadro’s number = 6 × 1023, O = 16 ]
The equation for the burning of octane is:
\[\ce{2C8H18 + 25O2 -> 16CO2 + 18H2O}\]
How many moles of carbon dioxide are produced when one mole of octane burns?
Calculate the number of atoms in the following:
52 g of He
N2 + 3H2 → 2NH3
(The atomic mass of nitrogen is 14, and that of hydrogen is 1)
1 mole of nitrogen (______ g) +
3 moles of hydrogen (______ g) →
2 moles of ammonia (______ g)
Calculate the number of moles in 27g of Al.
Deduce the number of molecules of the following compound in the given quantity.
8.8g carbon dioxide
