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Balancing Equations
Types of Reactions
Naming Molecules
Solubility
Stoichiometry
100
What numbers in a chemical equation do you change to balance it?
Coefficient
100
What type of reaction combines two reactants to make one product?
Synthesis/combination reaction
100
What charge is a cation?
Positive
100
Is a precipitate soluble or insoluble?
Insoluble
100
You are assembling hot dogs. You have 8 buns and 5 dogs. Which is the limiting reactant?
dogs
200
Balance : ___ H2 + ___ Cl2 -> ___ HCl
___ H2 + ___ Cl2 -> _2_ HCl
200
How many reactants are involved in a decomposition reaction?
ONE
200
In an ionic compound, which comes first, the cation or the anion?
Cation
200
NaNO3 dissolves in a liquid solution. How do you write this compound when including the state of matter it is in?
NaNO3 (aq)
200
4 NH3 + 5 O2 -> 6 H2O + 4 NO If 9.5 moles of H20 are produced, how many moles of O2 were used?
7.9 moles of 02
300
What does the law of mass conservation state?
the number of each element in the reactants must equal the number of those elements in the products.
300
When a free element takes the place of an element in a compound, what kind of reaction is taking place?
Single Replacement Reaction
300
What is the charge of the ion "OH"?
1-
300
Is NaOH soluble or insoluble?
Soluble
300
4 NH3 + 5 O2 -> 6 H2O + 4 NO What is the formula mass for H20?
18g/mol
400
_1_ Ca + _2_ H20 -> _1_ Ca(OH)2 + _1_ H2
_1_ Ca + _2_ H20 -> _1_ Ca(OH)2 + _1_ H2
400
In a combustion reaction, like when we burned the ethanol in lab in the fume hood, what two substances are produced?
Carbon dioxide and water
400
If the cation has a charge of 2+ and the anion has a charge of 1-, how many of each do you need to make the ionic compound neutral?
1 cation and 2 anions
400
NaOH and KNO3 react in solution. What ions do these polyatomic compounds dissociate into?
Na+ , OH- , K+ , NO3-
400
4 NH3 + 5 O2 -> 6 H2O + 4 NO If 18 mol of H20 are produced, how many grams of NH3 were used? (the formula mass of NH3 is 17g/mol)
204g of NH3
500
Balance: __Mg(OH)2 + __H3PO4 -> __H20 + __Mg3(PO4)2
_3_Mg(OH)2 + _2_H3PO4 -> _6_H20 + __Mg3(PO4)2
500
What type of reaction could possibly form a precipitate?
Double replacement reaction
500
If Co(NO3)2 is an ionic compound, then what must the charge of Co be?
2+
500
NaOH and KNO3 react in solution. What products are produced, and which of the two is a precipitate?
Precipitate: KOH (s) Non-precipitate/dissolved: NaOH (aq)
500
4 NH3 + 5 O2 -> 6 H2O + 4 NO if 23g of O2 are used in the reaction, how many grams of NO are produced? (Formula mass of O2 is 32g/mol and of NO is 30g/mol)
17.25g of NO