mass number

Class 11 Chemistry Chapter Stoichiometry Notes

Class 11 Chemistry Chapter Stoichiometry Notes Stoichiometry is quantitative chemistry. “Calculations based on the law of conservation of mass, law of constant composition and balanced chemical equations are called stoichiometric calculations.”     Science, Society Relationship: Stoichiometry has many applications in human society. It calculates: Concentrations of different substances in a sample. Glucose in the blood …

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Class 9 Chemistry Fundamentals of Chemistry Important Q/A

Class 9 Chemistry Fundamentals of Chemistry Important Q/A for Exams: Chemistry branch of science which deals with Composition of matter Properties of matter Changes in matters Different laws and principles which deals with these changes Internal Structure Matter  Anything in the universe which occupy space (having volume) and has mass is called matter. Matters can …

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