Advertisements
Advertisements
प्रश्न
The relative atomic mass of Cl atom is 35.5 a.m.u. Explain this statement.
उत्तर
The relative atomic mass of Cl atom is 35.5 a.m.u. because chlorine consists of a mixture of two isotopes of masses 35 and 37 in the ratio of 3 : 1.
The average of the isotopic masses is 35 x 3 + 37 x 4 = 35.5
Concept Insight: Isotopes are atoms of same having same atomic number but different mass number.
APPEARS IN
संबंधित प्रश्न
Calculate the mass in grams of 0.17 mole of hydrogen sulphide, H2S. (Atomic masses : H = 1 u, S = 32 u)
How many moles of oxygen atoms are present in one mole of the following compounds ?
- Al2O3
- CO2
- Cl2O7
- H2SO4
- Al2(SO4)3
The ratio of moles of atoms in 12 g of magnesium and 16 g of sulphur will be :
What do you understand by the term mole? How many elementary units are in one mole of a substance?
Define or explain the term:
Relative molecular mass
Determine the number of molecules in a drop of water which weighs 0.09 g.
If phosphorus is considered to contain P4 molecules, then calculate the number of moles in 100g of phosphorus?
Calculate the number of gram atoms in 4.6 gram of sodium.
The visible universe is estimated to contain 1022 stars. How many moles of stars are present in the visible universe?
If 0.2 mol of the following substance is required how many grams of that substance should be taken?
magnesium oxide
