What is mole concept in chemistry class 11?
A mole is defined as that amount of substance which contains Avogadro’s number of atoms if the substance is atomic or Avogadro’s number of molecules if the substance is molecular. … 1 mole of carbon atoms = 6.022 ×1023 atoms of carbon.
What is stoichiometric mole?
A common type of stoichiometric relationship is the mole ratio, which relates the amounts in moles of any two substances in a chemical reaction. We can write a mole ratio for a pair of substances by looking at the coefficients in front of each species in the balanced chemical equation.
What is mole concept example?
Moles can be used to represent a chemical reaction on a macroscopic level. For example, if a mole of water undergoes decomposition, it releases 0.5 moles of oxygen and a mole of hydrogen gas. The concept of a mole is used in determining the molarity of a substance.
What are the concepts of stoichiometry?
Stoichiometry is the study of measuring or predicting the amount of reactants or products in a chemical reaction based on the variables such as the mass of reactants or products, the limiting reactant and the balanced chemical equation.
How many atoms are in a mole?
The value of the mole is equal to the number of atoms in exactly 12 grams of pure carbon-12. 12.00 g C-12 = 1 mol C-12 atoms = 6.022 × 1023 atoms • The number of particles in 1 mole is called Avogadro’s Number (6.0221421 x 1023).
What is stoichiometry Class 11?
Stoichiometry is defined as the exact numbers which indicate the actual proportions of the reactant and product. … Stoichiometry is important for writing balanced chemical reactions. Thus the ratio of all the reactants and products can be determined. Stoichiometry is based on the law of conservation of mass.
What is mole 10th?
The mole is the unit of measurement in the International System of Units (SI) for an amount of substance. … 1 mole of hydrogen atoms represents 6.022 × 1023 hydrogen atoms. 1 mole of hydrogen molecules represents 6.022 × 1023 hydrogen molecules. 1 mole of water molecules represents 6.022 × 1023 water molecules.
What is mole concept and molar mass?
Related to the concept of moles, the molar mass of a substance refers to the total mass of one mole of a substance (i.e. molar mass = mass of one mole which is equal to 6.02214076×1023 number of particles of that substance ). … So numerically, one molar mass = mass of (6.02214076×1023 * Atomic mass of that element).