Advertisements
Advertisements
Question
Calculate the number of moles in 1.51 × 1023 molecules of NH4Cl.
Solution
1.51 × 1023 molecules of NH4Cl
A number of moles = `"Number of molecules"/"Avogadro’s number" = (1.51×10^23)/(6.023×10^23)` = 0.25 moles.
APPEARS IN
RELATED QUESTIONS
Fill in the following blanks :
A mole represents an .............. number of particles of a substance.
What is the mass of 5 moles of sodium carbonate (Na2CO3) ?
(Atomic masses : Na = 23 u ; C = 12 u ; O = 16 u)
Explain with examples what is meant by a 'mole' of a substance.
Prove the Following :
One mole of any gas contains th e same number of molecules.
Define the term.
Molar volume
Explain the term : Gram mole
1 mole of any substance contains ______ molecules.
One mole of any gas occupies ______ ml at S.T.P.
Calcium chloride when dissolved in water dissociates into its ions according to the following equation.
\[\ce{CaCl2} (aq) → {Ca^{2+} (aq) + 2{Cl}- (aq)}\]
Calculate the number of ions obtained from CaCl2 when 222 g of it is dissolved in water.
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?
