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Final Exam 5-7

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Chemistry Quiz sobre Final Exam 5-7, criado por Brian O'Neill em 13-12-2016.
Brian O'Neill
Quiz por Brian O'Neill, atualizado more than 1 year ago
Brian O'Neill
Criado por Brian O'Neill mais de 7 anos atrás
24
1
0

Resumo de Recurso

Questão 1

Questão
An ionic bond is best described as
Responda
  • the sharing of electrons
  • the transfer of electrons from one atom to another
  • the attraction that holds the atoms together in a polyatomic ion
  • the attraction between 2 nonmetal atoms
  • the attraction between 2 metal atoms

Questão 2

Questão
A covalent bond is best described as
Responda
  • the sharing of electrons between atoms.
  • the transfer of electrons
  • a bond between a metal and a nonmetal
  • a bond between a metal and a polyatomic ion
  • a bond between two polyatomic ion

Questão 3

Questão
Write the name for Sn(SO4)2. Remember that Sn forms several ions
Responda
  • tin (I) sulfite
  • tin (IV) sulfate
  • tin sulfide
  • tin (II) sulfite
  • tin (I) sulfate

Questão 4

Questão
Give a possible molecular formula for C3H5ClO.
Responda
  • C6H10ClO2
  • C5H10Cl2O2
  • C6H10Cl2O2
  • C6H10O2
  • C6H12Cl2O2

Questão 5

Questão
Determine the name for TiCO3. Remember that titanium forms several ions
Responda
  • titanium (II) carbonate
  • titanium carbide
  • titanium carbonite
  • titanium (II) carbonite
  • titanium (I) carbonate

Questão 6

Questão
Give the correct formula for aluminum sulfate.
Responda
  • Al2SO4
  • Al(SO4)3
  • Al3(SO4)2
  • Al2(SO4)3

Questão 7

Questão
Calculate the molar mass of Ca3(PO4)2
Responda
  • 87.05 g/mol
  • 215.21 g/mol
  • 310.18 g/mol
  • 279.21 g/mol
  • 246.18 g/mol

Questão 8

Questão
How many atoms of oxygen are contained in 47.6 g of Al2(CO3)3? The molar mass of Al2(CO3)3 is 233.99 g/mol.
Responda
  • 1.23 × 1023 O atoms
  • 2.96 × 1024 O atoms
  • 2.87 × 1025 O atoms
  • 1.10 × 1024 O atoms
  • 3.68 × 1023 O atoms

Questão 9

Questão
Calculate the mass percent composition of lithium in Li3PO4
Responda
  • 26.75 %
  • 17.98 %
  • 30.72 %
  • 55.27 %
  • 20.82 %

Questão 10

Questão
Determine the molecular formula of a compound that has a molar mass of 183.2 g/mol and an empirical formula of C2H5O2.
Responda
  • C2H5O2
  • C6H15O6
  • C3H7O3
  • C4H10O4
  • C8H20O8

Questão 11

Questão
Determine the empirical formula for a compound that contains C, H and O. It contains 52.14% C and 34.73% O by mass.
Responda
  • C2H6O
  • CHO
  • C4H13O2
  • CH4O3
  • CH3O

Questão 12

Questão
Draw the Lewis structure for S2⁻
Responda
  • True
  • False

Questão 13

Questão
Draw the Lewis structure for Ca2+
Responda
  • True
  • False

Questão 14

Questão
Draw the Lewis structure for N
Responda
  • True
  • False

Questão 15

Questão
Give the complete electronic configuration for Br-.
Responda
  • 1s22s22p63s23p64s24p6
  • 1s22s22p63s23p64s24d104p6
  • 1s22s22p63s23p64s23d104p6
  • 1s22s22p63s23p64s23d104p5
  • 1s22s2p63s2p64s23d104p6

Questão 16

Questão
Place the following in order of decreasing magnitude of lattice energy. K2O Rb2S Li2O
Responda
  • Li2O > K2O > Rb2S
  • Li2O > Rb2S > K2O
  • Rb2S > K2O > Li2O
  • Rb2S > Li2O > K2O
  • K2O > Li2O > Rb2S

Questão 17

Questão
Use Lewis theory to determine the chemical formula for the compound formed between Rb and O
Responda
  • RbO
  • RbO2
  • Rb2O
  • Rb2O3
  • Rb3O2

Questão 18

Questão
What type of bonding is found in the compound HCl?
Responda
  • covalent bonding
  • hydrogen bonding
  • ionic bonding
  • metallic bonding

Questão 19

Questão
Which of the following is an ionic compound?
Responda
  • SBr2
  • Mg3(PO4)2
  • Cl2O
  • CH2O
  • PBr5

Questão 20

Questão
Give the name for PCl3
Responda
  • phosphorus trichloride
  • potassium trichloride
  • phosphorus (III) chloride
  • phosphorus (II) chloride
  • phosphorus chloride

Questão 21

Questão
A single covalent bond
Responda
  • 0 electron pairs
  • 1 electron pairs
  • 2 electron pairs
  • 3 electron pairs
  • is the shortest
  • 4 electron pairs
  • is the strongest
  • is the weakest
  • does not exist
  • is the longest

Questão 22

Questão
A double covalent bond
Responda
  • 0 electron pairs
  • 1 electron pairs
  • 2 electron pairs
  • 3 electron pairs
  • is the shortest
  • does not exist
  • is the longest

Questão 23

Questão
A triple covalent bond
Responda
  • 0 electron pairs
  • 1 electron pairs
  • 2 electron pairs
  • 3 electron pairs
  • is the shortest
  • 4 electron pairs
  • is the strongest
  • is the weakest
  • does not exist
  • is the longest

Questão 24

Questão
A quadruple covalent bond exists
Responda
  • True
  • False

Questão 25

Questão
Identify the compound with the largest dipole moment in the gas phase
Responda
  • LiF
  • HF
  • ClF
  • Cl2

Questão 26

Questão
Identify the compound with the smallest dipole moment in the gas phase
Responda
  • Cl2
  • ClF
  • HF
  • LiF

Questão 27

Questão
Draw the best Lewis structure for BeF2. State the EG, the MG, and the hybridization for your answer.
Responda
  • True
  • False

Questão 28

Questão
Using periodic trends, place the following bonds in order of increasing ionic character. Si-P Si-Cl Si-S
Responda
  • Si-P < Si-Cl < Si-S
  • Si-P < Si-S < Si-Cl
  • Si-S < Si-Cl < Si-P
  • Si-Cl < Si-P < Si-S
  • Si-Cl < Si-S < Si-P

Questão 29

Questão
Give the number of valence electrons for ICl5.
Responda
  • 36
  • 40
  • 42
  • 44
  • 46

Questão 30

Questão
Draw the best Lewis structure for XeI2. State the EG, the MG, and the hybridization for your answer.
Responda
  • True
  • False

Questão 31

Questão
Draw the best Lewis structure for SF4. State the EG, the MG, and the hybridization for your answer.
Responda
  • True
  • False

Questão 32

Questão
Draw the best Lewis structure for NO3⁻. State the EG, the MG, and the hybridization for your answer
Responda
  • True
  • False

Questão 33

Questão
Which of the following resonance structures for OCN⁻ will contribute most to the correct structure of OCN⁻? (LP=lone pair)
Responda
  • O(2 LP’s) C N (2 LP’s)
  • O(1 LP) C-N(3 LP’s)
  • O(1 LP) C(2 LP’s) N(1 LP)
  • O(3 LP’s)—C N(with 1 LP)
  • They all contribute equally to the correct structure of OCN⁻

Questão 34

Questão
Place the following in order of increasing F-A-F bond angle, where A represents the central atom in each molecule.
Responda
  • PF3 < OF2 < PF4⁺
  • OF2 < PF4⁺ < PF3
  • PF4⁺ < OF2 < PF3
  • PF4⁺ < PF3 < OF2
  • OF2 < PF3 < PF4⁺

Questão 35

Questão
How many of the following molecules are polar? PCl5 COS XeO3 SeBr2
Responda
  • 2
  • 1
  • 0
  • 4
  • 3

Questão 36

Questão
Give the hybridization for the O in OF2. State the EG and the MG for your answer
Responda
  • True
  • False

Questão 37

Questão
Give the hybridization for the Br in BrF5. State the EG and the MG for your answer
Responda
  • True
  • False

Questão 38

Questão
A single covalent bond has [blank_start]1[blank_end] sigma and [blank_start]0[blank_end] pi bonds
Responda
  • 1
  • 0

Questão 39

Questão
A Double covalent bond has [blank_start]1[blank_end] sigma and [blank_start]2[blank_end] pi bonds
Responda
  • 1
  • 1

Questão 40

Questão
A triple covalent bond has [blank_start]1[blank_end] sigma and [blank_start]2[blank_end] pi bonds
Responda
  • 1
  • 2

Questão 41

Questão
Describe a pi bond
Responda
  • side by side overlap of parallel p orbitals
  • s orbital overlapping with the end of a d orbital
  • end to end overlap of p orbitals
  • overlap of two d orbitals
  • p orbital overlapiing with an f orbital

Questão 42

Questão
describe a sigma bond
Responda
  • end to end overlap of p orbitals
  • s orbital overlapping with the side of a p orbital
  • overlap of two d orbitals
  • p orbital overlapping with an f orbital

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