1.2 Amount of substance Flashcards
1
Q
What do moles equal?
A
Mass / Mr
2
Q
What does concentration equal?
A
moles/volume
3
Q
What is the ideal gas law?
A
pV=nRT
4
Q
What are the units for the ideal gas law?
A
p=Pa
V=m³
T=K
5
Q
How do you convert Celcius to kelvins?
A
+ 273
6
Q
What is the relative atomic mass?
A
The mass of an atom in comparison to an atom of C12.
7
Q
What is the relative molecular mass?
A
The mean mass of a molecule is relative to the mass of the 12C isotope of carbon.
8
Q
What is Avogadro’s constant?
A
no of atoms in a mole (6.022 x10^23)
9
Q
What is the empirical formula?
A
the simplest whole-number ratio of atoms of each element in a compound
10
Q
How do you measure the atom economy?
A
(Desired products / total products) x 100
11
Q
How do you measure the percentage yield?
A
(Actual yield / theoretical yield) x 100
