Advertisements
Advertisements
प्रश्न
Calculate the number of molecules in 12.8g of sulphur dioxide gas. Take Avogadro's number as 6 x 1023.
[S = 32, 0 = 16 ]
Advertisements
उत्तर
Number of molecules in 12.8g of sulphur dioxide gas.
Molecular mass of SO2 = 64a.m.u .
So, 64g = 1 mole
12.8g = 12.8/ 64 = 0.2 mole
Now 1 mole of SO2 contains = 6 x 1023molecules
0 .2 mole of SO2 contains = 0 .2 x 6 x 1023
= 1.2 x 1023molecules.
APPEARS IN
संबंधित प्रश्न
Calculate the molar mass of the following substance:
Ethyne, C2H2
What is the mass of 0.2 mole of oxygen atoms?
One of the following elements has an atomicity of ‘one’. This element is :
Explain with examples what is meant by a 'mole' of a substance.
What is the value of Avogadro's number?
What do you understand by the term mole? How many elementary units are in one mole of a substance?
Calculate the number of particles in 0.1 mole of any substance.
Calculate the number of molecules in one Kg of calcium chloride.
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)
Calculate the number of moles in 7g of nitrogen.
