Ch 2 Formulae Flashcards
1
Q
Mass of element in sample
A
Mass of compound in samples
Times
(Mass of element in compound / mass of compound)
2
Q
of neutrons
A
of neutrons = mass # - atomic #
3
Q
Coulomb’s law
A
E = q1q2/d
4
Q
Molecular mass
A
Molecular mass = sum of atomic masses
Eg
H2O = (2H-mass)+(1O-mass)