null
US
Sign In
Sign Up for Free
Sign Up
We have detected that Javascript is not enabled in your browser. The dynamic nature of our site means that Javascript must be enabled to function properly. Please read our
terms and conditions
for more information.
Next up
Copy and Edit
You need to log in to complete this action!
Register for Free
3173988
Moles
Description
Chapter 9 Moles Pure Chemistry Secondary 4 Express
No tags specified
chemistry
moles
o levels
science
chemistry
o level
Mind Map by
Hui Yuan
, updated more than 1 year ago
More
Less
Created by
Hui Yuan
over 9 years ago
23
2
0
Resource summary
Moles
Relative Atomic Mass(Ar)
Average mass of one atom of an element/one twelve of mass of an atom of carbon-12 atom
Relative molecular mass(Mr)
Mass of one molecule of an element or compound/one twelve of an atom of carbon-12 atom
Percentage composition of an element
[(atoms of element) x Ar]/Mr x 100%
1 mole of anything=6 x 10^23
Molar mass
No.of atoms=Mr/Mass of one atom
Empirical Formula
1)Write mass/percentage.2)Find the number of moles(divide by Ar).3)Divide by smallest no.4)Find molar ratio
Molecular Formula
n=molecular formula/empirical formula
No. of moles of gas:vol of gas in dm3/24dm3
24dm3=24000cm3
concentration of a solution
Mass of solute=concentration(g/dm3) x Vol.(dm3)
No. of moles of solute:Concentration(mol/dm3) x Vol.(dm3)
Mass=Moles x Ar
Show full summary
Hide full summary
Want to create your own
Mind Maps
for
free
with GoConqr?
Learn more
.
Similar
Acids and Bases
Sarah Egan
Introduction to the Atom
Derek Cumberbatch
Using GoConqr to study science
Sarah Egan
AS Chemistry - Enthalpy Changes
Sarah H-V
Testing for ions
Joshua Rees
Flame tests
Joshua Rees
GCSE - AQA: C1.1 The Fundamental Ideas in Chemistry
Olly Okeniyi
GCSE AQA Chemistry 1 Fuels & The Environment
Lilac Potato
Classification of Substances / Atomic Structure
Shane Buckley
Tests for Positive Ions: Flame Test Colours
bella.mort
Test for positive ions
bella.mort
Browse Library