Molar Ratios
Balancing Chemical Equations
Reaction Types
Molar Masses
Moles & Grams
100
In the following equation:
2H2 + O2 --> 2H2O
this is the molar ratio between oxygen and water
What is 1:2
100
In the chemical equation
1CuCl2 + 2NaOH --> _NaCl + 1Cu(OH)2
This is the coefficient for NaCl.
What is 2?
100
The reaction
Na+ + Cl- --> NaCl
Is this type of chemical reaction.
What is a combination reaction?
100
This is the molar mass of lead.
What is 207.2 grams per mole?
100
The number of grams in one mole of carbon.
What is 12.011 grams?
200
In the following equation
3Na2SO4 + 2AlCl3 --> 6NaCl + Al2(SO4)3
The molar ratio between sodium sulfate and sodium chloride is this.
What is 3:6
200
In the chemical equation
2Ga + _CuBr2 --> 2GaBr3 + _Cu
This is the coefficient for CuBr2
What is 3?
200
The reaction
MgCl2 --> Mg2+ + Cl2
is this type of chemical reaction.
What is a decomposition reaction?
200
This is the molar mass of C2H6 rounded to three decimal places.
What is 30.070 grams per mole.
200
The number of moles in 45 grams of water.
What is 2.5 moles?
300
In a chemical reaction where 10 moles of Copper is produced from 5 moles of copper oxide, this must be the molar ratio between the reactant and the product.
What is 1:2?
300
In the chemical equation
Al + HCl --> AlCl3 + H2
This is the coefficient for HCl.
What is 6?
300
The reaction
4Fe3+ + 3O2 --> 2Fe2O3
is this type of chemical reaction.
What is a combination reaction?
300
This is the molar mass of Mg(ClO3)2.
What is 191.205 grams per mole?
300
The number of grams present in 0.037 moles of H2CO3
What is 2.3 grams?
400
In a situation where ethanol is burned given by this equation:
C2H5OH + 3O2 --> 2CO2 + 3H2O
This is the number of moles of oxygen consumed if I start with 5 moles of ethanol.
What is 15 moles?
400
In the chemical equation
Na3PO4 + MgCl2--> NaCl + Mg3(PO4)2
This is the coefficient for Magnesium phosphate.
What is one?
400
The reaction
2NaBr + Cl2 --> 2NaCl + Br2
is this type of chemical reaction.
What is a single replacement reaction?
400
This is the molar mass of pentane.
What is 72.151 grams per mole?
400
The number of moles present in 527.15 grams of methane gas.
What is 32.859 moles?
500
Given the equation for cellular respiration below:
C6H12O6 + 6O2 --> 6CO2 + 6H2O
This is the number of moles of glucose that need to be consumed in order for the human body to produce 2 liters of CO2, given that there are 0.089 moles of CO2 in one liter of gas.
What is 0.030 moles?
500
In the balanced chemical equation for the combustion of propane (a molecule with 3 carbons and 8 hydrogens), this is the coefficient for the oxygen consumed.
What is 7?
500
The reaction
CH3COOH + 2O2 --> 2CO2 + 2H2O
is this type of chemical reaction.
What is a combustion reaction?
500
This the molar mass of threonine CH3CHOHCHNH2COOH.
What is 119.123 grams per mole.
500
The number of grams of sodium bicarbonate produced by mixing 5.0 moles of hydrogen carbonate with an excess of sodium hydroxide.
NaOH + H2CO3 --> NaHCO3 + H2O
What is 420 grams?