Total number of atoms in 90g of water - 9 x 1024, The volume occupied by 64 g of SO2 at STP - 22.4L, The number of atoms in 0.1 mole triatomic gas - 1.806 x 1023, Number of moles per 1 kg of solvent - Molality, Dependent on temperature - Molarity, Equivalent mass of Zinc carbonate - 62.5, Equivalent weight of phosphoric acid - 32.67, When two elements combine to form two or more compounds , then the different masses of one element , which combines with the fixed mass of other element , bear a simple whole number ratio with one another.  - Law of multiple proportions, A chemical compound , no matter from which source it is obtained , always contains the same elements combined together in the same definite proportion by mass - Law of constant composition, Number of gram equivalents of solute per litre of solution - Normality,

Some basic concepts in Chemistry

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