C3—Quantitative Chemistry Flashcards
What are moles used for
Used to compare quantities of substances
What is A^r
Relative atomic mass
What is M^r
Relative Formula Mass
What is Conservation of Mass
The Total mass of reactants must equal the total mass of products
What is the equation that links Moles,Grams and Relative Atomic Mass
Moles=Grams/A^r
Stoichiometry
The ratio of moles of one substance to another in a reaction
What is the units for concentration
g/dm^3
mol/dm^3
Cm^3 to dm^3 is ?
Cm——————>dm
Divide 1000
What’s the equation that links concentration,moles and volume
Concentration=moles/volume
What is percentage yield
A measure of how much product is actually made
Compared to the maximum theoretical mass
Equation that links %yield,total mass of product and total mass of reactant
total mass of products
%Yield= ——————————— X100
Total mass of reactants
What is Atom economy
A measure of how many reactant atoms form a desired product
What is the equation for Atom economy
. Mr of desired product
Atom eco=——————————- X100
Total Mr of reactants
1 mole of gas take up
A volume of 24dm^3
True for room temperature
