# Your question: How many moles are in 4 grams of bromine?

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## How many moles are in 1 gram of bromine?

As you know, one mole of any substance contains exactly 6.022⋅1023 molecules of that substance – this is known as Avogadro’s number. Now you should pull up a periodic table and look for the molar mass of elemental bromine, Br , which is given as 79.904 g/mol .

## What is the mass of 4 moles of bromine?

Mass of one mole of Br2 is 160 g. Hence mass of four moles of molecular bromine is 4 X 160 = 640 g.

## How much is a mole of bromine?

1 mol Br contains 6.022×1023Br atoms;its mass is 79.90 g.

## How many moles are in 4 grams of nitrogen?

We can also represent the number of moles. We can say that one gram of atoms is equal to one mole of nitrogen and in the same way four gram atoms of nitrogen is equal to four moles of nitrogen. After that we can say that the molar mass of nitrogen is 14 gram per mole.

## How do you calculate grams to moles?

Divide the mass of the substance in grams by its molecular weight. This will give you the number of moles of that substance that are in the specified mass.

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## How many bromine atoms are in 1 mole of magnesium bromide?

One formula unit of MgBr2 consists of one atom of magnesium (Mg) and two atoms of bromine (Br).

## How many molecules are in a mole?

The mole is represented by Avogadro’s number, which is 6.022×1023 atoms or molecules per mol.