Reactions
What type of reaction is represented by the general equation: A + BC → AC + B?
Single Replacement Reaction
What is the molar mass of Ba3(PO4)2?
601.93g/mol
ZnCl2 -> Zn2+ + 2Cl-
If 120g of Cl- was produced, how many grams of ZnCl2 were consumed?
230.7g ZnCl2
The geometric name for the VESPR structure of H2O
What is Bent.
What is the chemical name of salt? What is the chemical formula of salt?
Chemical name: Sodium chloride
Chemical formula: NaCl
Which element must be a reactant for a reaction to be classified as a combustion reaction?
Oxygen (O2)
How many moles are in 14267g of solid sodium hydroxide (NaOH)?
356.68 mols of NaOH
NaCl + K -> KCl + Na
If 173g of NaCl and 137g of K are used, what is the excess reactant, and how many mols are left once the reaction is completed?
K
0.540 mols of K
The number of resonance structures ClO3- can form.
What are 3
Identify the type and name of Ni2O3
Type: Type II ionic compound
Name: Nickel(III) oxide
In a chemical reaction, what does the symbol (aq) mean?
Aqueous or dissolved in water
How many ions are contained in 9.4g of potassium oxide, K2O? Assume Avogadro's constant is 6 x 1023
1.8*1023
P2O5 + 3H2O -> 2H3PO4
If 200.0g of P2O5 and 55.0g of H2O are used, how many grams of H3PO4 are produced.
199g H3PO4
The bond angles of the See-Saw or Sawhorse VESPR formation.
What are 90 and 120 degrees.
Which of the following is the correct name for the molecular compound N2O5?
a. nitrogen oxide
b. pentanitrogen dioxide
c. dinitrogen pentoxide
d. nitrogen (II) oxide
c. dinitrogen pentoxide
Identify this reaction type:
Li2O -> Li + O2
Decomposition Reaction
What is the percent of each element in (NH4)2(SO4)?
N: 21.20%
H: 6.10%
S: 24.25%
O: 48.44%
CH4 + 2O2 -> CO2 + 2H2O
If 60.0g of CH4 are combusted, how many grams of CO2 are produced?
165g CO2
The hybidization of SF6
What is sp3d2
Which of the following is the correct formula for calcium phosphate?
a. Ca3(PO4)2
b. CaPO4
c. Ca2(PO4)3
d. Ca4(PO2)2
a. Ca3(PO4)2
Convert the following word equation into a chemical formula (no balancing needed):
Ag₃AsO₄ + CaSO₄ → Ca₃(AsO₄)₂ + Ag₂SO₄
Determine the empirical and molecular formula for chrysotile asbestos. Chrysotile has the following percent composition: 28.03% Mg, 21.60% Si, 1.16% H, and 49.21% O. The molar mass for chrysotile is 520.8 g/mol.
Mg3Si2H3O8 (empirical formula), Mg6Si4H6O16 (molecular formula)
2H2 + O2 -> 2H2O
How many grams of H2O are produced when 4.0g of H2 are reacted with excess oxygen?
36g H2O
Explain why NO2 has a resonance structure.
The double bond could be formed on either oxygen.
Name a compound that is type II and binary. It is also an ionic compound.
Example: FeCl₃ — Iron(III) chloride