Some Basic Concepts

Atoms

100

Mm of H₂O

18 u

200

Mm of CH₃COOH

60 u

300

HCl

36.5

400

H₂O₂

34

500

H₂SO₄

98 u

Elements

100

EF of C₆H₁₂O₆

CH₂O

200

O₃

48 u

300

H₂S

34 u

400

MF of HO if n=2

H₂O₂

500

HNO₃

63 u

Ions

100

No of moles in an atom

n=Given mass/Atomic mass

200

Law of conservation of mass

Mass of reactants = Mass of products

300

No of moles in a molecule

n=Given mass/ Molar mass

400

One amu is

1.66 x 10^-24g

500

Avogadro number

6.022 x10²³

Moles

100

No of atoms in one mole of Au

6.022x10²³

200

No of molecules in one mole of CO₂

6.022x10²³

300

EF of C₆H₆

CH

400

Law of multiple proportions was proposed by

Dalton

500

The total strength of the class is 30. Find the significant figure

infinite