Chem 129 - Study guides, Class notes & Summaries

Chem 129 multiple choice exam 1 Questions And Answers (Verified And Updated) The percent composistion by mass of a compound is 79% C, 12.8% H, and 11% O. The molar mass of this compound is 284.5 g/mol. What is the molecular formula of the compound? - C10H6O -C9H18O -C16H28O4 -C20H12O2 -C18H36O2 - answerC18H36O2 (check molar mass then [molar mass * amount of species/ molar mass of whole compound]) How many moles of aspirin, C9H8O4, are in 325 mg tablet? - answer0.0018 moles (turn 325 i...

The percent composistion by mass of a compound is 79% C, 12.8% H, and 11% O. The molar mass of this compound is 284.5 g/mol. What is the molecular formula of the compound? - C10H6O -C9H18O -C16H28O4 -C20H12O2 -C18H36O2 - C18H36O2 (check molar mass then [molar mass * amount of species/ molar mass of whole compound]) How many moles of aspirin, C9H8O4, are in 325 mg tablet? - 0.0018 moles (turn 325 into grams then divide by molecular weight) A pi bond is the result of the -overlap of 2 s...

Strong Acid/Base CHEM 129 HCl - answerStrong Acid HBr - answerStrong Acid HI - answerStrong Acid HClO₄ - answerStrong Acid HNO₃ - answerStrong Acid H₂SO₄ - answerStrong Acid

Chem 129 FINAL EXAM Questions And Answers (Verified And Updated) Isotopes - answerSame # protons, different # of neutrons 10 5 B (Mass #/Atomic Mass) - answerp=5 N=10-5=5 e=5 Orbital diagrams - answern=# in orbital diagram l: s=0 p=1 d=2 f=3 Ml= timeline w/ 0 Spin: always +1/2 and -1/2 energies affecting atomic orbitals - answernuclear charge shielding (reduced full nuclear charge to Zeff) Atomic radus - answerdecreases b/c INCREASED electrostatic attraction Electron affinity - ans...

Chem 129 FINAL EXAM Questions And Answers (Verified And Updated) Isotopes - answerSame # protons, different # of neutrons 10 5 B (Mass #/Atomic Mass) - answerp=5 N=10-5=5 e=5 Orbital diagrams - answern=# in orbital diagram l: s=0 p=1 d=2 f=3 Ml= timeline w/ 0 Spin: always +1/2 and -1/2 energies affecting atomic orbitals - answernuclear charge shielding (reduced full nuclear charge to Zeff) Atomic radus - answerdecreases b/c INCREASED electrostatic attraction Electron affinity - ans...

CHEM 129 EXAM 1 Questions With 100% Correct Answers n=1 what is the shape? - answerL=0 n=1 what is the possible orientations? - answerml=0 n=1 what is the possible orbitals? - answer1s n=2 what is the shape? - answerL=0,1 n=2 what is the possible orientations?? - answerml=0 or -1,0,1 n=2 what is the possible orbitals - answer2s2p n=3 what is the shape? - answerL=0,1,2 n=3 what are the possible orientations? - answerml=0 or -1,0,1 or -2,-1,0,1,2 n=3 what is the possible orbital...

HCl - Answer-Strong Acid HBr - Answer-Strong Acid HI - Answer-Strong Acid HClO₄ - Answer-Strong Acid HNO₃ - Answer-Strong Acid H₂SO₄ - Answer-Strong Acid LiOH - Answer-Strong Base NaOH - Answer-Strong Base KOH - Answer-Strong Base RbOH - Answer-Strong Base CsOH - Answer-Strong Base Ca(OH)₂ - Answer-Strong Base Mg(OH)₂ - Answer-Strong BaseSr(OH)₂ - Answer-Strong Base Ba(OH)₂ - Answer-Strong Base OH⁻ - Answer-Strong Base Li₂O - Answer-Strong Base Na₂O - Answer...

Hydroxide - Answer-OHCyanide - Answer-CNNitrate - Answer-NO3- Nitrite - Answer-NO2- Sulfate - Answer-SO4 (2-) Sulfite - Answer-SO3 (2-) Phosphate - Answer-PO4 (3-) Carbonate - Answer-CO3 (2-) Acetate - Answer-CH3CO2- Oxalate - Answer-C2O4 (2-) Bicarbonate - Answer-HCO3- Permanganate - Answer-MnO4- Silver - Answer-Ag+Ammonium - Answer-NH4+ Zinc - Answer-Zn (2+) Hydrochloric acid - Answer-HCl Nitric acid - Answer-HNO3 Sulfuric acid - Answer-H2SO4 Phosphoric acid - Answer-H3PO4 Carb...

Strong Acid/Base CHEM 129 HCl - answerStrong Acid HBr - answerStrong Acid HI - answerStrong Acid HClO₄ - answerStrong Acid HNO₃ - answerStrong Acid H₂SO₄ - answerStrong Acid LiOH - answerStrong Base NaOH - answerStrong Base

Common Nomenclature Chem 129 Hydroxide - answerOH- Cyanide - answerCN- Nitrate - answerNO3- Nitrite - answerNO2- Sulfate - answerSO4 (2-) Sulfite - answerSO3 (2-) Phosphate - answerPO4 (3-)