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## How do you calculate the present value of a mole?

So in order to calculate the number of moles of any substance present in the sample, we simply divide the given weight of the substance by its molar mass. Where ‘n’ is the number of moles, ‘m’ is the given mass and ‘M’ is the molar mass.

## What is the value of a mole?

A mole is defined as 6.02214076 × 10^{23} of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.

## How do you find the moles of a product?

In order to calculate the moles of a product, you must know the mass of the product, and its molar mass (g/mol), which is the mass of one mole of of the product. You then divide the mass of the product by its molar mass.

## What is mole in chemistry class 9?

The mole is the amount of substance that contains the same number of particles (atoms/ ions/ molecules/ formula units etc.) as there are atoms in exactly 12 g of carbon-12. • Mass of 1 mole of a substance is called its molar mass.

## What is the value of 1 mole in Gram?

Thus, for example, one mole of water (H_{2}O) contains 6.02214076×10^{23} molecules, whose total mass is about 18.015 grams and the mean mass of one molecule of water is about 18.015 daltons, roughly a combined atomic mass number of 18.

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Mole (unit)

mole | |
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1 mol in … | … is equal to … |

SI base units | 1000 mmol |

## What is gram mole?

(Often called gram-molecular weight.) A mass of a substance in grams numerically equal to its molecular weight. Example: A gram-mole of salt (NaCl) is 58.44 grams.

## What is mole with example?

A mole corresponds to the mass of a substance that contains 6.023 x 10^{23} particles of the substance. The mole is the SI unit for the amount of a substance. Its symbol is mol. By definition: 1 mol of carbon-12 has a mass of 12 grams and contains 6.022140857 x 10^{23} of carbon atoms (to 10 significant figures). Examples.

## How do you calculate moles needed to react?

Determine the number of moles needed to react by multiplying by moles of the known substance by the stoichiometric ratio of the unknown substance to the known substance.

## How do you calculate the moles of a compound?

Divide the mass of the compound in grams by the molar mass you just calculated. The answer is the number of moles of that mass of compound. For example, 25 grams of water equals 25/18.016 or 1.39 moles.

## What is mole fraction in chemistry class 11?

Mole fraction of a particular component is defined as the number of moles of the same component of a solution to the total number of moles of all the constituents of the solution. Mole fraction is also known as the amount fraction. The expression of mole fraction of ith component in a solution is: xi=nintotal.