**Contents**show

## Which value gives the number of particles in 1 mol of a substance?

One mole of a substance is equal to **6.022 × 10²³ units** of that substance (such as atoms, molecules, or ions). The number 6.022 × 10²³ is known as Avogadro’s number or Avogadro’s constant.

## What term describes the number of particles in 1 mole of a substance?

One mole of any substance contains **Avogadro’s number** of particles, so 22.4 L of any gas at STP contains 6.02 x10^23 represenative particles of that gas.

## What is the molar mass of a substance quizlet?

Terms in this set (10) The molar mass is **the mass of a given chemical element or chemical compound (g) divided by the amount of substance (mol)**. The molar mass of a compound can be calculated by adding the standard atomic masses (in g/mol) of the constituent atoms.

## Which answer choice best describes the number of particles in a mole?

Which statement best describes a mole? It contains **6.02 x 10^23** particles of a given substance.

## Which value gives the number of particles in 1?

The numeric value of the Avogadro constant expressed in reciprocal mole, a dimensionless number, is called the Avogadro number, sometimes denoted **N or N _{}**, which is thus the number of particles that are contained in one mole, exactly 6.02214076×10

^{23}.

## What can be said about 1 mol Ag and 1 mol AU?

Avogadro’s number. What can be said about 1 mol Ag and 1 mol Au? … **They contain the same number of atoms.**

## How many particles are there in 1 mole of any type of compound?

A mole (mol) is the amount of a substance that contains **6.02 × 10 ^{23} representative** particles of that substance.

## Why is a mole 6.022 x10 23?

The mole (abbreviated mol) is the SI measure of quantity of a “chemical entity,” such as atoms, electrons, or protons. It is defined as the amount of a substance that contains as many particles as there are atoms in 12 grams of pure carbon-12. So, 1 mol contains 6.022×10^{23}**elementary entities of the substance**.

## What is the numerical value of mole?

One mole contains exactly **6.022 140 76 x 1023** elementary entities. This number is the fixed numerical value of the Avogadro constant, NA, when expressed in the unit mol–1 and is called the Avogadro number.

## How does the number of molecules in 1 mole of oxygen?

One mole of oxygen gas, which has the formula O_{2}, has a mass of 32 g and contains **6.02 X 10 ^{23} molecules** of oxygen but 12.04 X 10

^{23}(2 X 6.02 X 10

^{23}) atoms, because each molecule of oxygen contains two oxygen atoms.

## What is the mass of one mole of an ionic compound?

The molar mass of an element (or compound) is the mass in grams of 1 mole of that substance, a property expressed in units of grams per mole (g/**mol**) (see Figure 4).

…

The Mole.

Element | Cl |
---|---|

Average Atomic Mass (amu) | 33.45 |

Molar Mass (g/mol) | 33.45 |

Atoms/Mole | 6.022×1023 |