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General Chemistry

Stoichiometry

Stoichiometry numerical -2

Stoichiometry numerical Stoichiometry numerical- Question 1) How many moles of N2 are needed to produce 8.2 moles of NH3  Continue Reading »

3 months ago

Stoichiometry numerical -1

Stoichiometry numerical- Question-¬† 23 gm of sodium reacts with water. Calculate (i) the weight of H2 liberated (ii) the  Continue Reading »

3 months ago
Stoichiometry

Stoichiometry

Stoichiometry Stoichiometry- In a reaction, quantitative relationships among the reactants & products is called ‘Stoichiometry’. Stoicheion means element¬† &  Continue Reading »

3 months ago
Percentage composition

Percentage composition

Percentage composition- Percentage composition gives the mass of each element expressed as the percentage of the total mass. It  Continue Reading »

3 months ago
Dalton atomic theory

Dalton atomic theory

Dalton atomic theory To provide justification to the laws of chemical combination, Dalton proposed atomic theory. The basic postulates  Continue Reading »

3 months ago
Unit conversion

Unit conversion

Unit conversion- Unit conversion – One unit can be converted into another by conversion factor method or dimensional analysis.  Continue Reading »

4 months ago
properties

Properties of matter

Properties of matter- Properties of matter- Each substance has unique properties, these are physical & chemical properties. Physical properties  Continue Reading »

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Accuracy and precision

Accuracy and precision- source: mathsis fun.com Accuracy and precision- Accuracy- Accuracy means the closeness of an experimental value or  Continue Reading »

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Scientific notation

Scientific notation

Scientific notation- Scientific notation- A better and simplified way to represent very large or very small values is called  Continue Reading »

4 months ago
Significant figures

Significant figures

Significant figures- Significant figures- “The significant figures of a number are digits that carry meaningful contributions to its measurement  Continue Reading »

4 months ago
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