Advertisements
Advertisements
Question
Fill in the following blanks :
64 g of oxygen gas contains ................ moles of oxygen atoms.
Advertisements
Solution
64g of oxygen contain 4 moles of oxygen atoms.
APPEARS IN
RELATED QUESTIONS
What is the mass of 0.5 mole of water molecules?
Fill in the following blanks :
A mole represents an .............. number of particles of a substance.
How many moles of O2 are there in 1.20 × 1022 oxygen molecules ?
Define the term:
Avogadro’s number
Explain the term:
Mole
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.
Solid ammonium dichromate decomposes as:
\[\ce{(NH4)2Cr2O7 -> N2 + Cr2O3 + 4H2O}\]
If 63 g of ammonium dichromate decomposes. Calculate the quantity in moles of (NH4)2Cr2O7.
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.
The difference in the mass of 100 moles each of sodium atoms and sodium ions is 5.48002 g. Compute the mass of an electron.
Deduce the number of molecules of the following compound in the given quantity.
90g water
