Moles
What is Avogadro's Number?
6.022 × 10²³
Define Molar Mass
The Mass of 1 Mole of substance
Define Percent Composition:
The percentage of each element in a compound, based on their masses.
Define Formula Mass
The sum of the average atomic masses of a compound's elements.
The reactant that gets used up 1st in a reaction.
Define Mole
A unit of measurement to quantify the amount of a substance
What is the Molar Mass of Hydrogen
1.0080
Define Percent Yield
Define Empirical Formulas:
Defined as the ratio of subscripts of the smallest possible whole number of the elements present in the formula. It is also known as the simplest formula.
Define Excess Reactant:
The reactant that does not determine the amount of product made in a reaction.
How do you calculate moles?
Divide the mass of the material by its Molar Mass
What is the molar mass of Carbon
12.011
Define Actual Yield
The amount of product that was made and measured in a reaction
Define Molecular Formulas
The representation of the types of atoms and their ratios present in that compound.
Define Subscript
The number of atoms in a molecule or ion.
Examples Water: H2O
What is 1 Mole of Carbon Dioxide? CO2
CO2
1 Molecule of Carbon = 12.01
2 Molecules of Oxygen = 16
Add them together = 18.01
What is the Molar Mass of Oxygen?
16
Define Theoretical Yield
The amount of a product that should be able to be made in a reaction.
What is NaCl?
Sodium Chloride
Define Coefficient:
The number of molecules or ions in a reaction.
2H2O
What is 1 Mole of Glucose?
C6H12O6
What is the Molar Mass of H2O
You have 2 Hydrogen Atoms: 2(1.0080) = 2.0156
You have 1 Oxygen Atom = 16
Add them together =
18.01528 g/mol or 18
What is the Formula for Percent Composition?
Mass % = (Mass/Total Mass) X 100%
What is NH3
Ammonia
What is the Molar Mass of Glucose?
C6H12O6
Carbon = (12.01)(6)
Hydrogen = (1.008)(12)
Oxygen = (16)(6)
Total Mass of Glucose= 180.156 g/mol