**Contents**show

## How many steps is a mole to particle conversion?

1: Conversion from number of particles to mass, or from mass to number of particles requires **two steps**.

## How do you find the particles?

**Calculating the number of particles**

- The number of particles in a substance can be calculated using:
- Number of particles = Avogadro constant × the amount of substance in mol.
- Calculate the number of water molecules in 0.5 mol of water.
- Number of water molecules = Avogadro constant x amount of substance in mol.

## How do you convert moles to mass?

**Multiply the molecular weight by the number of moles for the substance**. The molecular weight is the number of grams per mole for the substance and gives the conversion factor for moles to grams for that particular substance. So, one mole of water has a mass of 18.02 grams (1 mol H2O x 18.02 g/mol = 18.02 g).

## How do you find the moles of solute particles?

The number of **moles of solute = mass of solute ÷ molar mass of solute**, where mass is measured in grams and molar mass (defined as the mass of one mole of a substance in grams) is measured in g/mol.

## How do you find the moles of a representative particle?

**Multiply the value obtained in Step 3 by Avogadro’s number**, which represents the number of representative particles in a mole. Avogadro’s number has a value of 6.02 x 10^23. Continuing the example, 2 moles of water x 6.02 x 10^23 particles per mole = 1.20 x 10^24 particles.

## Why do we convert mass to moles?

Answer: Big, **because atoms and molecules are way too small to count**, so we mass large numbers of them instead, and use molar mass to convert to the NUMBER of moles of them.

## How do we then get from moles to mass quizlet?

1) Given X mole of Element – need grams of Element. 2) Find Molar Mass what 1 mole of Element is – then **multiply Molar Mass to X mole of element**.

…**Terms in this set (14)**

- Given Mass (A) of Molecule.
- Add Molar Mass of each element in Molecule.
- Divide (A) into Molar Mass of combined Elements.