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Balance Equ.
Vocab
Calculating Formula Mass
Question
Molar Volume as a reversion factor
100
Answer: C5H12 + O2 ---> 5CO2 + H2O
Balance: C5H12 + O2 ---> CO2 + H2O
100
the study of quantitative relationships between reactants and products in a chemical reaction.
What is Stiochimetry?
100
Find the molecular mass: HCl
36.46
100
Yes, you divide by the # of grams by the atomic mass of the element and multiply by Avogrdros's #.
Can mass in grams be converted directly to numbers to particles? Describe.
100
How many moles are present in 45.0 liters of CL gas at STP?
2.01 loes
200
Answer: Zn + 2HCl ---> ZnCl2 + H2
Balance: Zn + HCl ---> ZnCl2 + H2
200
The unit used to count numbers of atoms, moelcules, or formula units of substances.
What is a mole?
200
Find the molecular mass: PbSoO4
303.281
200
Mass- amount of material Moles- amount of material, but they are normalized to the atmoc mass of the material.
Describe the relationship between mass and moles?
200
What volume does 2.8 moles of CO2 occpy at STP?
62.7 liters
300
Answer: 3Ca(OH)2 + 2H3PO4 ---> Ca3(PO4)2 + 6H2O
Balance: Ca(OH)2 + H3PO4 ---> Ca3(PO4)2 + H2O
300
The mass of one mole of a pure substances.
What is molar mass?
300
Find the molecular mass: MgCO3
84.313
300
The volume that a mole of gas occupies at a pressure of one atmosphere and a temperature of 0.00 C
What is molar volume?
300
How many moles are contained in 0.50 liters of NO gas at STP?
0.2 moles
400
Answer: S8 + 24F2 ---> 8SF6
Balance: S8 + F2 ---> SF6
400
The mass in atmoic mass units of one molecule of a covalent compound.
What is molecular mass?
400
Find the molecular mass: I2
253.8
400
How many grams are there in a 2.0-liter flask of CH4 gas at STP?
1.4 grams
500
Answer: FeCl3 + 3NH4OH ---> Fe(OH)3 + 3NH4Cl
Balance: FeCl3 + NH4OH ---> Fe(OH)3 + NH4Cl
500
In a chemical reaction, the maximum amount of product that can be produced from a given amount of rectant.
What is theoretical yield?
500
Find the molecular mass: KOH
56
500
The equation that expresses exactly how pressure P, volume, Temperature T, and the number of particles of a gas are related . PV=nRT.
What is the ideal gas law?
500
What volume does 2.0 grams of NO2 gas occupy at STP?
0.97 liters