C4 Flashcards
How to find number of moles
Mass / Ar or Mass / Mr (where mass is always in grams)
Equation for mass
No of moles X Ar or Mr
How to calculate percentage yield
Actual mass of product produced / maximum theoretical mass of product possible all times by 100
How to find atom economy
Relative formula mass or desire / rfm of all reactants al ltimes 100
How to find conc
Amount of solute (g) / vol of solution (dm3) X1000
what is the conservation of mass
states that no atoms are loss or made during a chemical reaction so the mass of the of the products is equals the mass of the reactants
state balanced eq of magnesium reacting with hcl
Mg + 2HCL –> MgCl2 + H2
what is avogadros constant
6.02 x 10 power of 23
what does it mean by a limiting reactant
the reactant thats being used up which limits the amount of products being produced
what is titration
a technique for finding the conc of a solution by reacting a known volume of a solution with a solution of known conc
what is atom economy
a measure of the amount of starting materials that end up as useful products
