Question:
If we consider that 1/6, in place of 1/12, mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of substance will
If we consider that 1/6, in place of 1/12, mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of substance will
Updated On: Jun 23, 2023
- decrease twice
- increase two fold
- remain unchanged
- be a function of the molecular mass of substance
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The Correct Option is C
Solution and Explanation
$1$ mole = No. of atoms in $12.0000 \,g $ of $C^{12} = 6. 022 \times 10^{23}$
Mass of $1$ mole of a substance
= Actual mass of $1 $ atom (or molecule) of the substance $\times 6. 022 \times 10^{23}$
As mass of $1$ mole of substance does not depend upon the atomic mass unit scale, the mass of one mole of substance will not change
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Some Basic Concepts of Chemistry
Chemistry is a vast subject and for understanding its significance we can take help of following points:
- Chemistry plays an important role in understanding various subjects like physics, geology and biology.
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Classification of Matter
There are two ways of classifying the matter:
(A) Physical Classification:
Matter can exist in three physical states:
- Solids - have definite volume and definite shape
- Liquids - have definite volume but not definite shape.
- Gases - have neither definite volume nor definite shape.
(B) Chemical Classification:
Based upon the composition, matter can be divided into two main types:
- Pure Substances are defined as a single substance (or matter) which cannot be separated by simple physical methods. Pure substances can be further classified as (i) Elements (ii) Compounds
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