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प्रश्न
Fill in the following blanks :
64 g of oxygen gas contains ................ moles of oxygen atoms.
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उत्तर
64g of oxygen contain 4 moles of oxygen atoms.
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संबंधित प्रश्न
Calculate the molar mass of the following substance:
Sulphur molecule, S8
What is the mass of 0.5 mole of water molecules?
Which of the following correctly represents 360 g of water ?
- 2 moles of H2O
- 20 moles of water
- 6.022 × 1023 molecules of water
- 1.2044 × 1025 molecules of water
Correct the following statement :
Equal masses of all gases under identical conditions contain the same number of molecules.
A gas cylinder can hold 1 kg of hydrogen at room temperature and pressure.
(a) Find the number of moles of hydrogen present
(b) What weight of CO2can the cylinder hold under similar conditions of temperature and pressure? (H = 1 C = 12, O = 16)
(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.
How many grams of CO2 is present in 0.1 mole of it?
Calculate the mass of 0.1 mole of the following:
Na2SO4.10H2O
(Ca = 40, Na = 23, Mg = 24, S = 32, C = 12, Cl = 35.5, O = 16, H = 1)
What mass of Ca will contain the same number of atoms as are present in 3.2 g of S?
Which of the following weighs the least?
Raunak took 5 moles of carbon atoms in a container and Krish also took 5 moles of sodium atoms in another container of same weight.
- Whose container is heavier?
- Whose container has more number of atoms?
