# What is the representative particle for FE?

## What is the representative particle for FE?

atom
For an atomic substance (He, Fe), a representative particle is an atom.

How do you calculate representative particles?

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.

### What is the number of representative particles in a mole?

6.02 × 10 23
Avogadro’s number: The number of representative particles in a mole, 6.02 × 10 23 .

What is the number of representative particles in 3.00 mol SN?

IV. Find the number of representative particles in each substance.
1. 3.00 mol Sn 1.81×1024 atoms of Sn
2. 0.400 mol KCl 2.41×1023 formula units KCl
3. 7.50 mol SO2 4.53×1024 molecules SO2
4. 4.80 × 10−3 mol NaI 2.89×1021 formula units NaI

## What are the three representative particles?

A representative particle is the smallest unit of a substance that can be broken down without altering the composition. Matter is composed of three types of representative particles: atoms, molecules and formula units.

What are the 4 representative particles?

The types of representative particles that chemists generally work with are:

• atoms – the smallest particle of an element.
• ions – atoms with positive or negative charges.
• molecules – two or more covalently bonded atoms.
• formula units – the simplest ratio of ions that make up an ionic compound.

### How do you solve for the number of particles?

Calculating the number of particles

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

How many particles are in 4 moles?

Nathan L. In science, we have a name for this, called Avogadro’s number, and it describes the number of representative particles in one mole of a substance. The inverse mole unit tells us there are 6.022×1023 particles of something *per mole*.

## How many atoms are in 3.00 moles of Sn?

There are 3×NA tin atoms in 3.0 mol of tin metal, where NA is Avogadro’s number, 6.022×1023 mol−1 .

How many representative particles are in 7.5 mol of sulfur dioxide?

Explanation: So if there are 7.50 mol SO2 molecules; there are 7.5×NA individual SO2 molecules, and in that quantity there are 7.5×NA individual S ATOMS, and 15×NA individual O atoms.

### How do you convert mass to number of particles?

To calculate the number of atoms in a sample, divide its weight in grams by the amu atomic mass from the periodic table, then multiply the result by Avogadro’s number: 6.02 x 10^23.