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Brown's Chemistry - GCSE/IGCSE/GCE (basic A level)
O Level Online Chemical Calculations
 14.
INDEX of other GCSE and basic A level chemical calculations
Spotted any careless error?
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query ? comment or request a type of
GCSE calculation not covered?
14.
Other miscellaneous chemical calculations
14.1 Percentage purity of a chemical reaction product
14.1
% purity of a product and assay calculations
14.2a Percentage yield of the product of a reaction and why
not 100% in reality
14.2a
% reaction yield and theoretical yield calculations
and why you can't actually get 100% yield in practice
14.2b
The
Atom economy of a chemical reaction
14.2b
atom economy calculations
14.3
Dilution of solutions calculations -
calculating
dilutions - volumes involved etc.
14.3
dilution of solutions calculations
14.4 Water of crystallisation
in a crystallised salt
14.4
water of crystallisation
calculations
14.5
Calculation of quantities required for a chemical reaction
14.5
how
much of a reactant is needed? calculation of quantities required, limiting
reactant quantities
See also
Chemical &
Pharmaceutical Industry Economics & Sustainability, Life Cycle
Assessment, Recycling
Above is typical periodic table used in GCSE science-chemistry specifications in
doing chemical calculations,
and I've 'usually' used these values in my exemplar calculations to cover most
syllabuses
OTHER CALCULATION PAGES
-
What is relative atomic mass?,
relative isotopic mass and calculating relative atomic mass
-
Calculating relative
formula/molecular mass of a compound or element molecule
-
Law of Conservation of Mass and simple reacting mass calculations
-
Composition by percentage mass of elements
in a compound
-
Empirical formula and formula mass of a compound from reacting masses
(easy start, not using moles)
-
Reacting mass ratio calculations of reactants and products
from equations
(NOT using
moles) and brief mention of actual percent % yield and theoretical yield,
atom economy
and formula mass determination
-
Introducing moles: The connection between moles, mass and formula mass - the basis of reacting mole ratio calculations
(relating reacting masses and formula
mass)
-
Using
moles to calculate empirical formula and deduce molecular formula of a compound/molecule
(starting with reacting masses or % composition)
-
Moles and the molar volume of a gas, Avogadro's Law
-
Reacting gas volume
ratios, Avogadro's Law
and Gay-Lussac's Law (ratio of gaseous
reactants-products)
-
Molarity, volumes and solution
concentrations (and diagrams of apparatus)
-
How to do acid-alkali
titration calculations, diagrams of apparatus, details of procedures
-
Electrolysis products calculations (negative cathode and positive anode products)
-
Other calculations
e.g. % purity, % percentage & theoretical yield, dilution of solutions
(and diagrams of apparatus), water of crystallisation, quantity of reactants
required, atom economy
(this page)
-
Energy transfers in physical/chemical changes,
exothermic/endothermic reactions
-
Gas calculations involving PVT relationships,
Boyle's and Charles Laws
-
Radioactivity & half-life calculations including
dating materials
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Revision KS4 Science Additional
Science Triple Award Science Separate Sciences Courses aid to textbook revision
GCSE/IGCSE/O level Chemistry Information Study Notes for revising for AQA GCSE
Science, Edexcel GCSE Science/IGCSE Chemistry & OCR 21st Century Science, OCR Gateway
Science WJEC gcse science chemistry CCEA/CEA gcse science chemistry O
Level Chemistry (revise courses equal to US grade 8, grade 9 grade 10) A level
Revision notes for GCE Advanced Subsidiary Level AS Advanced Level A2 IB Revise
AQA GCE Chemistry OCR GCE Chemistry Edexcel GCE Chemistry Salters Chemistry CIE
Chemistry, WJEC GCE AS A2 Chemistry, CCEA/CEA GCE AS A2 Chemistry revising
courses for pre-university students (equal to US grade 11 and grade 12 and AP
Honours/honors level for revising science chemistry courses revision guides
These revision notes and practice questions on how to do chemical calculations
and worked examples should prove useful for the new AQA, Edexcel and OCR GCSE
(9–1) chemistry science courses.
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