C3 - Quantitative Chemistry Flashcards
1
Q
Due to CONSERVATION OF MASS the TOTAL MASS OF…
A
of the REACTANTS MUST EQUAL the TOTAL MASS of PRODUCTS
2
Q
What are MOLES used for ?
A
Moles are Used to Compare Quantities of Substances
1 Mole = 6.02 x 10²³ Atoms/Molecules
3
Q
What is the EQUATION to FIND MOLES ?
A
Moles = Mass (g) / Relative Atomic Mass
4
Q
WHAT is STOICHIOMETRY ?
A
The Ratio of Moles of One Substance to another in a Reaction
5
Q
What happens when a SUBSTANCE IS DISSOLVED in WATER ?
A
It Dissociates into its Ions ( H+ and Cl- )
as does Water ( Into H+ and OH- Ions )
6
Q
CONVERTING VOLUME OF WATER ( cm³ or ml³ )
A
Divide by 1000 to turn into dm³
7
Q
CONCENTRATION EQUATION
A
Concentration ( mol/dm³ ) = Moles / Volume ( dm³ )
