Types of Rxns
Random
Stoichiometry
Balancing Equations
Random
100
Classify this chemical reaction: C(s) + O2(g) → CO2(g)
What is synthesis reaction
100
How many moles of H2 are in 2.6 grams of H2?
what is 1.3 moles H2
100
B2H6 + O2 
HBO2 + H2O
What mass of O2 will be needed to burn 36.1 g of B2H6 ?
What is 125g O2
100
balance the equation:FeCl3 + MgO ---> Fe2O3 + MgCl2
what is 2FeCl3 + 3MgO ---> Fe2O3 + 3MgCl2
100
Which type of reaction produces both water and carbon dioxide?
what is combustion reactions
200
Classify this reaction: CaCO3(s) → CaO(s) + CO2(g)
what is decomposition reaction
200
How many moles are in 46 grams of H2O?
what is 2.56 moles H2O
200
2KClO3 ---> 2KCl + 3O2
How many moles of O2 can be produced by letting 12.00 moles of KClO3 react?
what is 18.00 mol of O2
200
balance the equation: Li + H3PO4 ---> H2 + Li3PO4
what is 6Li + 2H3PO4 ---> 3H2 + 2Li3PO4
200
According to reference table F, which compound is most soluble?
a. CaCl2
b. PbCl2
c. AgBr
d. AgI
what is CaCl2
300
Classify this reaction:Zn(s) + CuSO4(aq) → ZnSO4(aq) + Cu(s)
What is single replacement reaction
300
What is the percent composition by mass of nitrogen in the compound N2H4 (gram-formula mass = 32 g/mole)?
what is 88% Mass Nitrogen
300
2K + Cl2 ---> 2KCl
How many grams of KCl is produced from 2.50 g of K and excess Cl2.
what is 4.77g of KCl
300
balance the equation: FeS2 + Cl2 ---> FeCl3 + S2Cl2
what is 2FeS2 + 5Cl2 ---> 2FeCl3 + 2S2Cl2
300
A compound has a molar mass of 90 g/mole and the empirical formula CH2O. What is the molecular formula of this compound?
what is C3H6O3
400
Classify this reaction:C(s) + O2(g) → CO2(g) + energy
what is combustion
400
What is the Gram-formula mass of CuSO₄.5H₂O?
what is 250 g/mole
400
Na2O + H2O ---> 2NaOH
How many moles of NaOH is produced from 36 grams of Na2O?
what is 1.16 mole NaOH
400
balance the equation:H2(g) + V2O5(s) ---> V2O3(s) + H2O(ℓ)
what is 2H2(g) + V2O5(s) ---> V2O3(s) + 2H2O(ℓ)
400
Given the reaction:
2Al + 3H2SO4 --> 3H2 + Al2(SO4)3
The total number of moles of H2SO4 needed to react completely with 55.0 moles of Al is?
what is 7.5 moles
500
Classify this chemical reaction:HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l)
What is double replacement reaction
500
The total number of moles represented by 20 grams of CaCO3 is what?
what is 0.2 moles CaCO3
500
8Fe + S8 ---> 8FeS
What mass of iron is needed to react with 16.0 grams of sulfur?
what is 27.9 g of Fe
500
balance the equation: Fe + HC2H3O2 ---> Fe(C2H3O2)3 + H2
what is 2Fe + 6HC2H3O2---> 2Fe(C2H3O2)3 + 3H2
500
Given the equation:
Al2(SO4)3 + 6NaOH --> 2Al(OH)3 + X
What is x?
what is 3Na2SO4