Mole Conversions
How many grams are in 2.00 moles of water? (Report to 4 significant digits)
36.04 g H2O
What is the molar mass of Sb?
121.76 g/mol Sb
Balance the following equation
Na + O2. --> Na2O
4Na + O2 --> 2Na2O
What is the definition of a limiting reactant?
A reactant that is used up first in a chemical reaction.
If my actual yield for a reaction was 8 grams, and my theoretical yield was 10 grams, what is my percent yield?
80%
How many moles are in 88.0 grams of carbon dioxide? (Report to 3 significant digits)
2.00 moles of CO2
What is the molar mass of Na3PO4?
163.84 g/mol. Na3PO4
Balance the following equation
N2 + F2 --> NF3
N2 + 3F2 --> 2NF3
What is Actual Yield?
Actual amount of a product that can be formed with the limiting reactant, determined experimentally
Fe3O4 + 4 CO--->3 Fe + 4 CO2
How many moles of CO are needed to react with
16.5 g of Fe3O4?
0.285 moles CO
How many molecules are in 0.75 moles of methane (CH4)? (Report to 3 significant digits)
4.52x1023 molecules of CH4
What is the molar mass of hydrogen peroxide?
34.02 g/mol H2O2
Balance the following equation.
P + O2 --> P2O5
4P + 5O2 --> 2P2O5
What is a reactant?
An element or product that react together to form a product.
How many grams of lithium Nitrate will be needed to make 250 grams of lithium sulfate assuming that you have an adequate amount of lead (IV)
Pb(SO4)2 + 4 LiNO3 --> Pb(NO3)4 + Li2SO4
313.48g of LiNO3
How many molecules are in 36.0 grams of water? (Report to 3 significant digits)
1.20x1024 molecules of water
What is the molar mass of (NH4)2S?
68.13 g/mol of (NH4)2S
Balance the following equation
C6H10 + O2 --> CO2 + H2O
2C6H10 + 17O2 --> 12CO2 + 10 H2O
What is a product?
The result reactants reacting together or reactants breaking down.
How many grams of NaCl will be produced from 88.6 grams of chlorine gas reacting with 46 grams of sodium?
146 g
AT STP, how many liters of oxygen gas are in 5.60 grams of oxygen? (Report to 3 significant digits)
3.92 L of O2
What is the molar mass of Zn(C2H3O2)2
183.4 g/mol Zn(C2H3O2)2
Balance the following equation
CO2 + H2O --> C6H12O6 + O2
6 CO2 + 6 H2O --> C6H12O6 + 6 O2
What is the definition of molar mass?
Everyone should get this right... (xg/mol.)
Ammonium nitrate decomposes into dinitrogen monoxide gas and water. Determine the amount in grams of water produced if 25.0 g of ammonium nitrate decomposes.
11.3 grams H2O