Terms/Definitions
A substance that contains two or more elements chemically combined in a fixed proportion.
What is a Compound?
How many moles are present in the product of the Synthesis reaction of Mg + NO3 given there are 82 grams of this new substance.
0.55 moles
Identify the type of reaction:
C4H8+O2 ---> CO2+H2O
Combustion
What is the Molar Mass of the compound:
C6H12O6
180.2 moles per gram
What is the difference between the Empirical formula and the Molecular formula of a compound?
The empirical formula shows the lowest possible whole number ratio needed in the equation of the compound. While molecular formula shows the actual amount needed to create a compound.
What is Molar Mass?
The mass of an element, usually present on the periodic table.
Name all the conversion factors for a mole
1 mole --> molar mass of an element
1 mole --> 22.4 Liters
1 mole --> 6.02 x 1023 Particles
Balance the equation:
H3PO4+Ca(OH)2 ---> Ca3(PO4)2+H2O
2H3PO4+3Ca(OH)2 ---> Ca3(PO4)2+6H2O
What is the Empirical formula for a compound containing 24 grams of Carbon, 36 grams of Hydrogen, and 64 grams of oxygen?
CH18O2
How many moles of oxygen are in glucose
6 moles
What is Avogadro's Hypothesis?
Under the same temperature and pressure, equal volumes of gases will contain an equal number of particles.
How many liters of H3PO4 are in 27.4 x 1026 atoms of the substance.
1.02 x 105 Liters
Balance this equation:
C4H8+O2 ---> CO2+H2O
C4H8+6O2 ---> 4CO2+4H2O
Find the percent composition of Calcium in CaC14H10O4 (Calcium Benzoate).
14.2%
Phosphorus pentoxide and water react and form phosphoric acid. Write a balanced equation and name the type of reaction.
P4O10 + 6H2O --> 4H3PO4
Synthesis
12 grams of Carbon are equal to how many molecules, what is the name of this number?
6.02 x 1023
Avogadro's Number
Write a balenced equation for the reaction of
CdS + NaBr --> CdBr2 + Na2S
Then give the number of particles of CdBr2 created from 3.7 moles of NaBr
CdS + 2NaBr --> CdBr2 + Na2S
11.1 x 1023 particles
Write and balance the equation for a reaction between Iron (III) Oxide and Chlorine.
2FeO3 + 3Cl2 ---> 2FeCl3+3O2
Find the percent compostions of the compund Ca4(PO4)2F3 then uses them to find the molecular formula of 1221 grams of the substances.
Ca --> 39.3
P --> 15.2
O --> 31.9
F --> 14.0
M Formula - Ca12(PO4)6F9
Write a balanced equation for the reaction of sodium metal and Chloride, then give the number of moles and the mass of chlorine when reacting with 10.0 grams of sodium
15.43 grams of Cl2
Define mole ratio.
A conversion factor derived from the coefficients of a balanced chemical equation interpreted in terms of moles.
Write a balanced equation for when Hydronium Acetate colides with oxygen in the atmosphere. Then give the amount of water in liters created from a collision with 200 grams of oxygen.
H3OCH3COO +2O2 --> 2CO2 + 3H2O or H3OCH3CO2 +2O2 --> 2CO2 + 3H2O
420 Liters of water
Calcium Bromide reacts with Silver Nitrate to create 2 new substances. Write a balanced equation of the new substance. Bonus points (+200) if you can name the reaction.
CaBr2+2AgNo3 ---> Ca(NO3)2+2AgBr
Bonus Points (+200) - Double Replacement
Hydronium Acetate breaks down to form Carbonate and water. Find the percent compositions, molar mass, and m formula given a molar mass of 475 of the reactant
H --> 7.69&
O --> 61.5%
C --> 30.8%
Molar Mass --> 78
M formula --> H18O6C6H18C6O6O6 or H18O6C6H18C6O12
Carbon monoxide is combined with hydrogen to produce methanol. If you had 152.5 grams of CO and 24.5 grams of OH2, how many grams of methanol could be produced
174.4 grams of CH3OH can be produced