Home/Introduction To Fundamental
Concept of Mole
Question#1
The same mole of N2 , H2 and O2 are present in one 0.1cc of volume at STP, which one has greater number of molecules MDCAT2023
Question#2
In a mole of water vapour at STP, the volume actually occupied or taken by the molecules (i.e., Avogadro’s No. x Volume of one molecule) is [Kerala EEE 2000]
1 mole of water = 18g water = 18cm3 of water
actual volume of 1 mole of water= 18cm3
volume of 1 mole of water vapours = 22414cm3
percent volume actually occupied by water molecules = \( \frac{18}{22414} \times 100 \) = less than 1%
Question#3
The number of molecules of CO2 present in 44g of CO2 is [BCECE 2005]
Question#4
How many atoms are contained in one mole of sucrose C12H22O11 [Pb. PMT 2002]
Question#5
The number of moles of sodium oxide in 620g of it is [BHU 1992]
Sodium oxide Na2O
Molecular weight = 46 +16 = 62
62gm of Na2O = 1 mole
620gm of Na2O = 10 mole.