Entrance Exam Semmelweis Exam
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,Electron configuration for cations - correct ans:Subtract 1 from exponent of highest n-value orbital (ex.
remove from 4s before 3d)
Ag+ = [Kr]5s^1 4d^9
Electron configuration for anions - correct ans:Add 1 to closest orbital
Cl- = [Ne]3s^2 3p^6
Atomic orbitals - correct ans:s, p, d, f
Primary vs secondary structures of proteins - correct ans:Primary - AA chain (linked by peptide bonds)
Secondary - stabilized by non-covalent bonds (alpha helices & beta sheets)
Most bonds in organic compounds are - correct ans:covalent
Properties of water - correct ans:1. polar
2. capable of adhesion and cohesion
3. high heat capacity (so it's hard to raise its temp)
4. great solvent
5. high heat of vaporization (allows humans to cool off via sweat)
6. water is less dense as a solid than a liquid
Intermolecular forces of water - correct ans:hydrogen bonding
Solution components - correct ans:1. solvent (product being dissolved)
2. solute (medium for dissolving solvent)
, Molarity - correct ans:the number of moles of solute per liter of solution
Solubility rules - correct ans:SOLUBLE
1. alkali metals (group 1) & NH4+ cations
2. NO3- or CH3COO- anions
3. Cl, Br, I (except when bonded to Ag+, Pb2+ or Hg2+)
4. sulfate ions (except when with Ca2+, Sr2+, Ba2+, Pb2+)
INSOLUBLE
1. Metal oxides (except CaO, SrO, BaO)
2. Hydroxides (except when with Ca2+, Sr2+, Ba2+)
3. Carbonates, phosphates, sulfides, and sulfites (unless bound to alkali metal or NH4+)
Solubility product - correct ans:Ksp = [A]^a[B]^b
**only products because we don't include solids in the equilibrium expression
for NaCl
- Ksp = x^2
for PbCl2
- Ksp = 4x^3
for Cr(OH)3
- Ksp = 27x^4
Large Ksp means - correct ans:strong electrolyte (more soluble)
Strong acids - correct ans:So I brought no clean clothes
With Comprehensive Questions and
Well Elaborated Correct Answers
GRADED A+
Professional Academic Assistance Services
Services Offered
Proctored Exam Assistance
Online Class Management (Full Course Support)
Exam Preparation & Study Materials
Assignments and Coursework Support
Essays and Research Papers
Discussion Posts and Replies
,Electron configuration for cations - correct ans:Subtract 1 from exponent of highest n-value orbital (ex.
remove from 4s before 3d)
Ag+ = [Kr]5s^1 4d^9
Electron configuration for anions - correct ans:Add 1 to closest orbital
Cl- = [Ne]3s^2 3p^6
Atomic orbitals - correct ans:s, p, d, f
Primary vs secondary structures of proteins - correct ans:Primary - AA chain (linked by peptide bonds)
Secondary - stabilized by non-covalent bonds (alpha helices & beta sheets)
Most bonds in organic compounds are - correct ans:covalent
Properties of water - correct ans:1. polar
2. capable of adhesion and cohesion
3. high heat capacity (so it's hard to raise its temp)
4. great solvent
5. high heat of vaporization (allows humans to cool off via sweat)
6. water is less dense as a solid than a liquid
Intermolecular forces of water - correct ans:hydrogen bonding
Solution components - correct ans:1. solvent (product being dissolved)
2. solute (medium for dissolving solvent)
, Molarity - correct ans:the number of moles of solute per liter of solution
Solubility rules - correct ans:SOLUBLE
1. alkali metals (group 1) & NH4+ cations
2. NO3- or CH3COO- anions
3. Cl, Br, I (except when bonded to Ag+, Pb2+ or Hg2+)
4. sulfate ions (except when with Ca2+, Sr2+, Ba2+, Pb2+)
INSOLUBLE
1. Metal oxides (except CaO, SrO, BaO)
2. Hydroxides (except when with Ca2+, Sr2+, Ba2+)
3. Carbonates, phosphates, sulfides, and sulfites (unless bound to alkali metal or NH4+)
Solubility product - correct ans:Ksp = [A]^a[B]^b
**only products because we don't include solids in the equilibrium expression
for NaCl
- Ksp = x^2
for PbCl2
- Ksp = 4x^3
for Cr(OH)3
- Ksp = 27x^4
Large Ksp means - correct ans:strong electrolyte (more soluble)
Strong acids - correct ans:So I brought no clean clothes
