Advertisements
Advertisements
प्रश्न
The relative atomic mass of Cl atom is 35.5 a.m.u. Explain this statement.
Advertisements
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 molar mass of the following substance:
Sulphur molecule, S8
What is the mass of 10 moles of sodium sulphite (Na2SO3)?
What is the mass of 0.2 mole of oxygen atoms?
Explain with examples what is meant by a 'mole' of a substance.
The equation for the burning of octane is:
\[\ce{2C8H18 + 25O2 -> 16CO2 + 18H2O}\]
How many moles of carbon dioxide are produced when one mole of octane burns?
Correct the following statement :
Equal masses of all gases under identical conditions contain the same number of molecules.
How many grams of H2O are present in 0.2 mole of it?
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 oxygen atoms in 0.10 mole of Na2CO3 . 10H2O.
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?
