Stoichiometry & Chemical Reactions Flashcards
0
Q
Mass conservation…
A
Made by Lavoisier (1789)
“In any ordinary chemical reaction, mass is neither created no destroyed”
1
Q
What is stoichiometry?
A
The study of the quantitative relationship between reactants and products in chemical reactions in terms of mass and volume.
2
Q
Ratio
A
Amount of element that reacts with another
3
Q
What is percent composition?
A
Is how many substance of an element is present in a compound. Measured in percentage.
4
Q
Molecular formula
A
The amount of actual molecules in a compound
5
Q
Empirical formula
A
The minimum number of the molecules of a compound.
6
Q
Percent yield
A
The calculation of the real losing reactants environment.
Actual yield
————— x100= composition %
Calculated
7
Q
Combustion
A
Carbohydrate + oxygen always gives CO2 + H2O
