1.2 - amount of substance Flashcards
1
Q
what is the mole?
A
the amount of substance in grams that has the same
number of particles as there are atoms in 12 grams of carbon-12
2
Q
what is relative atomic/molecular mass?
A
the average mass of one atom/molecule compared to one twelfth of the mass of one atom of carbon-12
3
Q
Avogadro’s constant?
A
- 6.022 x 10^23
- One mole of any specified
entity contains 6.022 x 10^23 of that entity
4
Q
mole calculation for gases?
A
pressure(Pa) x volume(m^3) = temperature(K) x moles x R(8.31)
4
Q
mole calculation for pure solids, liquids and gases?
A
mass = Mr x moles
5
Q
how to get from K to C* in temperature?
A
C* = K + 273
6
Q
equation for number of particles?
A
moles x Avogadro’s constant
7
Q
mole calculation in solution?
A
moles = concentration x volume
8
Q
density equation?
A
density = mass/volume
9
Q
what is empirical formulae?
A
the simplest ratio of atoms of each element in the compound
10
Q
A
11
Q
A
