c4 Flashcards
1
Q
law of conservation of mass
A
no atoms are lost or made during a chemical reaction so the mass of the products equals the mass of the reactants
2
Q
moles, mass, mR
A
moles = mass/mR
3
Q
two equations for concentration
A
concentration = mass/volume
concentration = moles/volume
4
Q
moles, concentration, volume
A
moles = concentration x volume
5
Q
avogadro’s number and what it means
A
there are 6.02 x 10 to power of 23 particles of a substance in 1 mole
6
Q
how much volume does one mole of gas take up
A
24dm cubed
7
Q
equation linking volume and moles for gas
A
volume = moles x 24
8
Q
how many cm cubed in one dm cubed
A
1000
9
Q
percentage yield
A
mass of product actually made / maximum theoretical mass of product x 100
10
Q
atom economy
A
rfm of desired product / sum of rfm of all reactants x 100
