Stoichiometry Formulae Flashcards
1
Q
Moles of a substance
A
Amount given/Relative Atomic (Molecular) Mass
2
Q
Volume of a gas
A
3
Q
No. of atoms in _____ g of substance
A
4
Q
No of atoms in _____ (c)m^3 of [substance] gas
A
5
Q
Relative Molecular Mass
A
Locate relative atomic mass (RAM) for all elements involved, multiply RAM of an element by no. of same molecules in the formula, find sum of resultant values.
6
Q
Empirical Formula
A
7
Q
Water of Crystallisation
A
Find amount of element + amount of water, divide each by RAM then divide both resultants by smallest result, place value for water as x in the chemical formula (substance).xH2O
