Advertisements
Advertisements
प्रश्न
Calculate the number of molecules in one Kg of calcium chloride.
Advertisements
उत्तर
Molecular mass of CaCl2 = 40 + (35.5 x 2) = 111
111 g of CaCl2 contain molecules= 6.02 x 1023
∴ 1kg = 1000 g of CaCl2 contain molecules
= `602/(111 xx 100) xx 1000 xx 10^23`
= `6020/111 xx 10^23`
= 5.42 x 1024
APPEARS IN
संबंधित प्रश्न
If one mole of carbon atoms weighs 12 gram, what is the mass (in gram) of 1 atom of carbon?
Show by means of calculations that 5 moles of CO2 and 5 moles of H2O do not have the same mass. How much is the difference in their masses ?
Calculate the mole ratio of 240 g of calcium and 240 g of magnesium. (Ca = 40 u ; Mg = 24 u)
Define mole. What are the two things that a mole represents.
What is meant by ‘a mole of carbon atoms’ ?
Explain the term:
Mole
Calculate the number of atoms in the following:
52 amu of He
Calculate the number of atoms in the following:
52 g of He
Which of the following weighs the least?
Calculate the number of moles in 27g of Al.
