EQUATIONS Flashcards
1
Q
equation for number of particles (N)
A
N=nNA
N=number of particles
n=amount of a substance(mol)
NA=avagadros constant(mol-1)
2
Q
equation for the amount of a substance in a solid
A
n=m/mr
n=amount of a substance
m=mass(g)
mr=molar mass(gmol-1)
3
Q
equation for the amount of a substance in a liquid
A
n=vc
n=amount of a substance
v=volume(dm^3)
c=concentration(mol/dm^-3)
4
Q
equation for the amount of a substance in a gas (only at a certain temp)
A
n=v/24dm^3
n=amount of a substance
v=volume(dm^3)
5
Q
ideal gas equation
A
PV=nRT
P=pressure(Pa)
V=volume(M^3)
n=amount of a substance(mol)
R=8.314
T=the absolute temp(K)
6
Q
% uncertainty
A
absolute uncertainty/value*100
7
Q
alkane formula
A
CnH2n+2
8
Q
alkene formula
A
CnH2n
