Mole, Molecular Weights, and Combustion Reactions Flashcards
1
Q
Avogadro’s number
A
6.022x10^23 aka a 1 mole
2
Q
molecular (formula) weight
Ex: fructose aka C6H12O6
A
add up the masses of every atom in that molecular formula
Ex: C=12, H=1, O=16
126+H12+16*6= 180
3
Q
are molecular weights and formula weights the same?
A
yes
4
Q
Unit of molecular weight?***
A
amu (Atomic Mass Units) OR grams/mole
5
Q
What is the general formula for a combustion reaction?
A
H or OH * O2 = CO2 AND H2O
6
Q
What is a combustion reaction?
A
a rapid reaction in which a hydrocarbon (CH) or an alcohol (OH) reacts with oxygen (O2)
7
Q
What are ALWAYS the products of a combustion reaction?
A
carbon dioxide (CO2) and water (H2O)
8
Q
decomposition reactions?
A
single compound breaks down into two or more compounds
9
Q
composition reactions?
A
a single substance is produced from multiple reactants
