Advertisements
Advertisements
प्रश्न
How many moles of O2 are there in 1.20 × 1022 oxygen molecules ?
Advertisements
उत्तर
1.20 × 1022 molecules of oxygen
One mole of oxygen contains 6.022 × 1023 molecules.
1.20 × 1022 molecules of oxygen contain = 1.20 × 1022 / 6.022 × 1023 = 0.01099 moles.
Hence, 1.20 × 1022 molecules of oxygen contain 0.0199 moles of oxygen.
APPEARS IN
संबंधित प्रश्न
What is the mass of 0.5 mole of water molecules?
Which of the following pair of elements represents a mole ratio of 1 : 1 ?
Deduce the number of molecules of the following compound in the given quantity.
32g oxygen
Define the term.
Molar volume
Find the number of moles in 10 g of CaCO3.
A student puts his signature with a graphite pencil. If the mass of carbon in the signature is 10-12 g, calculate the number of carbon atoms in the signature.
The number of molecules in 4.25 g of ammonia is ______.
From the equation for burning of hydrogen and oxygen
\[\ce{2H2 + O2 -> 2H2O}\] (Steam)
Write down the number of mole (or moles) of steam obtained from 0.5 moles of oxygen.
Solid ammonium dichromate decomposes as:
\[\ce{(NH4)2Cr2O7 -> N2 + Cr2O3 + 4H2O}\]
If 63 g of ammonium dichromate decomposes. Calculate the quantity in moles of nitrogen formed.
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)
