11th science NCERT Solutions | chemistry notes for class 11

11th science NCERT Solutions | chemistry notes for class 11 - Molar Mass

We offer online classes that include animated videos or recorded lectures with detailed explanation, sample papers with solutions, objective and subjective study material, NCERT solutions for Class 11 for all subjects. We post articles and blogs for students related to important topics, notifications, and information related to exams. In this article, we have explained the Molar Mass and how to determine molar mass, from unit 1, CBSE Chemistry of Class 11.

Any matter whether it is a chemical element or a chemical compound has some mass and occupies space. It is very easy to measure the masses of various substances (in kilograms/ grams) in our daily life, by using different kinds of weighing machines/balances. But how can we measure the mass of compounds or molecules? In the science laboratory, we use a tool called an analytical balance to measure in grams. In a chemical reaction, there are several reactants (elements/molecules/ compounds) that participate and give new products (different molecules/ compounds, from those in the reactants).But, how we can determine the amount/or masses of the reactants or products.

A Mole (abbreviated as a mole), gives the amount of a substance (1 mole contains 6.022×1023 entities). A Molar mass (M) also known as Molecular weight, of a substance is defined as mass per mole of the entities(atoms, molecules, or formula units) that make up the substance.

The periodic table is very important for calculating the molar mass.The periodic table(shown in the figure below) is a chart used in chemistry that shows the arrangement of the chemical elements in order of increasing atomic number. In a periodic table, the elements with similar atomic structure (hence similar chemical properties) appear in vertical columns.

Read more ...... chemistry notes for class 11 - Molar Mass

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