# Stoichiometry

## How do you calculate the yield of a reaction

Yield of a reaction: The quantity of product produced in a reaction is called the yield of the reaction. Types of Yield of a reaction yield of the reaction is of three types. (i)  Theoretical Yield:         The quantity of product as calculated by stoichiometric calculations or calculations based on a balanced equation is called theoretical … ## How to find Excess Reactant and Limiting Reactant

Limiting Reactant: “The reactant which is earlier consumed in a chemical reaction” is called limiting reactant. Or:    “The reactant which is completely consumed in a reaction to produce product when the reaction is over” is called limiting reactant. Limiting reactant is also known as limiting reagent. Excess Reactant: The substance whose some amount is left … ## Law of Constant Composition(law of definite proportions)

Law of definite proportion: This law was put forward by French chemist Joseph Louis Proust in 1799. It states: According to the law of definite proportion “same compounds are always consisting of same elements combined in a same fixed ratio by mass.” For Example: Water (H2O) always contains hydrogen and oxygen in a ratio : …

## Law of conservation of mass- Chemistry

Law of conservation of mass Statement: Law of conservation of mass states that    “mass can neither be created nor destroyed in a chemical reaction and the total mass of the reactant is always equal to the total mass of the product in a chemical reaction.” Law of conservation of mass is also known as principle …

## Mole and Chemical Equation

What is mole in chemistry? Mole is defined as the quantity of a substance that contains 6.022 X 1023 particles ( atoms, molecules ,formula units or ions). Mole is represented by ” mol”. It’s unit is mol-1 Chemical equation Representation: A chemical equation is a way to represent chemical reaction by using symbols, chemical formulae … ## How do you calculate the percent composition of an element in a compound

What is Percentage Composition? Percentage composition is defined as ” the number of parts of an element in 100 parts of a compound “ Or in simple words: The percentage amount of all elements in the compound is called percentage composition. Percentage Composition Calculation Formulae: %age of element =  Mass of element in the compound   … ## Mole and Avogadro’s Number Important Questions

Mole and Avogadro’s Number (NA): What is Mole ? Mole(n) is defined as the amount of substance that contains 6.022 x 1023 particles ( atoms ,molecules or ion) Or: Mole can also be defined as ” the atomic mass , molecular mass or formula mass expressed in grams is equal to i mole of a … ## Stoichiometry Important Terms Definitions

Stoichiometry is quantitative chemistry. “Calculations based on law of conservation of mass, law of constant composition and balanced chemical equations are known as stoichiometric calculations.”  Important Stoichiometry Definitions: Matter: Any thing that has volume as well as mass is called matter. Mass: Quantity of matter in a body is called mass. Weight: The force with …