Molar Relationships
What is the formula from mass to mole?
mole/mass
What is the mass of 0.5000 mol of Helium?
2.002g He
Stoichiometry
What unit is a large unit used to measure small objects?
Mole
What is the symbol for Calcium?
Ca
What is the Molar Mass?
The atomic Mass in grams.
What is the percent composition of Al2(SO4)3?
15.77% Al,
28.12% S,
56.11% O
What is the name of the reactant used up before the rest?
Limiting reactant
What type of formula includes the types of atoms involved, exact composition of the molecules, and the arrangement of chemical bonds?
Structural Formula
What is the atomic number of copper?
29
What is the formula to convert from Mol to the number of units?
N/Mol
What is the molar mass of Al2(SO4)?
342.2g Al2(SO4)
In what unit of measurement must all conversion from reactant to product occur?
Mole
What is Avogadro's number
6.022 x 1023 units
What element has the atomic number 36?
Krypton?
What is the conversion from Mole to mass
mass/mol
How many grams of oxygen would a 65.00g sample of Al2(SO4)3 contain?
36.47 g O
What is the measured amount of product at the end of a reaction called?
Actual Yield
What type of formula gives the simple whole number ratio of a compound?
Empirical formula
What is the symbol for Potassium?
K
What is the conversion formula from # of units to Mole?
mol/N
How many moles of phosphoric acid can be formed from 3550 g of diphosphorus pentoxide?
P2O5 + 3H2O --> 2H3PO4?
50 mol H3PO4
What term states, "the coefficients from the balanced equation give the ratios between the moles of one substance and the moles of another substance"?
Mole Ratio
What term describes the mass composition of a compound by showing what percentage of its total mass comes from each element?
Percent Composition
What is the atomic number and name for the element As?
33 Arsenic