In Class 11 Chemistry (Some Basic Concepts of Chemistry), the Mole Concept is crucial for calculating the number of atoms in a given mass of a substance. Let's calculate the exact number of atoms in 558.5 grams of Iron (Fe).
Atomic Mass of Iron (Fe): 55.85 g/mol.
Avogadro's Number: $6.022 \times 10^{23}$ atoms per mole.
Total Moles in 558.5g: 10 moles.
To find the number of atoms, we must first find how many 'moles' of Iron we have.
Formula: Moles (n) = Given Mass / Atomic Mass
So, we have exactly 10 moles of Iron.
According to Avogadro's Law, one mole of any substance contains exactly $6.022 \times 10^{23}$ particles (atoms, in this case).
Formula: Total Atoms = Number of Moles × Avogadro's Number ($N_A$)
There are $6.022 \times 10^{24}$ atoms in 558.5 grams of Iron (Fe).
The number of atoms in 558.5 grams of Fe is 6.022 × 10^24. This is calculated by dividing the mass by the atomic mass of Fe (55.85) to get 10 moles, and then multiplying by Avogadro's number.
What is Brisk Effervescence in Chemistry?
Learn the meaning of brisk effervescence in chemistry. Understand why the rapid escape of gas bubbles occurs during chemical reactions, with examples.
BrF₃ ⇌ Br₂ + F₂ — Bromine Trifluoride Auto-Ionization Explained
Bromine trifluoride (BrF₃) undergoes auto-ionization: 2BrF₃ ⇌ BrF₂⁺ + BrF₄⁻. It acts as both a Lewis acid and base. Learn BrF₃ structure, reactions with Br₂ and F₂, and uses.
Bromoethane: Formula, Structure, and Uses
Learn about Bromoethane (Ethyl Bromide). Discover its chemical formula, structural representation, preparation, and uses in organic chemistry.
Burette — Definition, Use, and Diagram
What is a burette in chemistry? Learn about its use in titration, how to read a burette diagram, and why it has a stopcock at the bottom.
How is Butter Separated from Milk?
Learn the scientific process of how butter is separated from milk or curd. Understand the principle of centrifugation and churning used in class 9 science.
Turn this guide into revision flashcards, a practice exam, or an AI-generated podcast — free, no signup required.