Advertisements
Advertisements
Question
The relative atomic mass of Cl atom is 35.5 a.m.u. Explain this statement.
Advertisements
Solution
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
RELATED QUESTIONS
If one mole of carbon atoms weighs 12 gram, what is the mass (in gram) of 1 atom of carbon?
One of the following elements has an atomicity of ‘one’. This element is :
Given that the relative molecular mass of copper oxide is 80, what volume of ammonia (measured at STP) is required to completely reduce 120g of copper oxide? The equation for the reaction is :
3CuO + 2NH3 → 3Cu + 3H2O + N2
A sample of ammonium nitrate when heated yields 8.96 litres of steam (measured at STP)
NH4NO3 → N2O + 2H2O
What volume of dinitrogen oxide is produced at the same time as 8.96 L of steam?
Calculate the number of particles in 0.1 mole of any substance.
If phosphorus is considered to contain P4 molecules, then calculate the number of moles in 100g of phosphorus?
Correct the statement, if required.
Under the same conditions of temperature and pressure, equal volumes of all gases contain the same number of atoms.
One mole of any gas occupies ______ ml at S.T.P.
What is Molar volume of a gas?
Deduce the number of molecules of the following compound in the given quantity.
8.8g carbon dioxide
