Entrance Semmelweis Exam
Questions & Answers (Grade A+)
Electron configuration for cations -
correct answer ✅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 answer ✅Add 1 to closest orbital
Cl- = [Ne]3s^2 3p^6
Atomic orbitals -
correct answer ✅s, p, d, f
Primary vs secondary structures of proteins -
correct answer ✅Primary - AA chain (linked by peptide bonds)
Secondary - stabilized by non-covalent bonds (alpha helices & beta
sheets)
,Entrance Semmelweis Exam
Questions & Answers (Grade A+)
Most bonds in organic compounds are -
correct answer ✅covalent
Properties of water -
correct answer ✅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 answer ✅hydrogen bonding
Solution components -
correct answer ✅1. solvent (product being dissolved)
2. solute (medium for dissolving solvent)
Molarity -
correct answer ✅the number of moles of solute per liter of
solution
,Entrance Semmelweis Exam
Questions & Answers (Grade A+)
Solubility rules -
correct answer ✅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 answer ✅Ksp = [A]^a[B]^b
**only products because we don't include solids in the equilibrium
expression
, Entrance Semmelweis Exam
Questions & Answers (Grade A+)
for NaCl
- Ksp = x^2
for PbCl2
- Ksp = 4x^3
for Cr(OH)3
- Ksp = 27x^4
Large Ksp means -
correct answer ✅strong electrolyte (more soluble)
Strong acids -
correct answer ✅So I brought no clean clothes
1. H2SO4
2. HI
3. HBr
4. HNO3
5. HCl
Questions & Answers (Grade A+)
Electron configuration for cations -
correct answer ✅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 answer ✅Add 1 to closest orbital
Cl- = [Ne]3s^2 3p^6
Atomic orbitals -
correct answer ✅s, p, d, f
Primary vs secondary structures of proteins -
correct answer ✅Primary - AA chain (linked by peptide bonds)
Secondary - stabilized by non-covalent bonds (alpha helices & beta
sheets)
,Entrance Semmelweis Exam
Questions & Answers (Grade A+)
Most bonds in organic compounds are -
correct answer ✅covalent
Properties of water -
correct answer ✅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 answer ✅hydrogen bonding
Solution components -
correct answer ✅1. solvent (product being dissolved)
2. solute (medium for dissolving solvent)
Molarity -
correct answer ✅the number of moles of solute per liter of
solution
,Entrance Semmelweis Exam
Questions & Answers (Grade A+)
Solubility rules -
correct answer ✅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 answer ✅Ksp = [A]^a[B]^b
**only products because we don't include solids in the equilibrium
expression
, Entrance Semmelweis Exam
Questions & Answers (Grade A+)
for NaCl
- Ksp = x^2
for PbCl2
- Ksp = 4x^3
for Cr(OH)3
- Ksp = 27x^4
Large Ksp means -
correct answer ✅strong electrolyte (more soluble)
Strong acids -
correct answer ✅So I brought no clean clothes
1. H2SO4
2. HI
3. HBr
4. HNO3
5. HCl
