CHEM 121 FINAL EXAM Questions and Answers | 2026 Ultimate Final Review | Grade A+

CHEM 121 FINAL EXAM Questions and
Answers | 2026 Ultimate Final Review |
Grade A+
• molar mass is the mass of. CORRECT ANSWER: 6.022e23 molecules or 1 mole


• exothermic reaction. CORRECT ANSWER: gas -> liquid -> solid


• endothermic reaction. CORRECT ANSWER: solid -> liquid -> gas


• ionization energy trend. CORRECT ANSWER:


• photoelectric effect. CORRECT ANSWER: certain metals emit electrons when
illuminated by particular wavelengths of light


• 2 hybrid orbitals. CORRECT ANSWER: linear (sp)


• 3 hybrid orbitals. CORRECT ANSWER: trigonal planar (sp2)


• 4 hybrid orbitals. CORRECT ANSWER: tetrahedral (sp3)


• 5 hybrid orbitals. CORRECT ANSWER: trigonal bipyramidal (sp3d)


• 6 hybrid orbitals. CORRECT ANSWER: octahedral (sp3d2)


• STP. CORRECT ANSWER: T=273K P=1atm V=22.4L

, • Pressure is caused by. CORRECT ANSWER: collisions


• Vgas =. CORRECT ANSWER: Vcontainer


• Structure determines. CORRECT ANSWER: function


• total Hrxn=. CORRECT ANSWER: sum of products - sum of reactants


• first law of thermodynamics. CORRECT ANSWER: energy is neither created nor
destroyed


• +w +q. CORRECT ANSWER: endothermic


• -w -q. CORRECT ANSWER: exothermic


• heat flows from. CORRECT ANSWER: warm to cold


• heat transfer formula. CORRECT ANSWER: -mc(delta)T = mc(delta)T


• total Erxn (bomb calorimetry) =. CORRECT ANSWER: -c(delta)T divided by n


• strong acids. CORRECT ANSWER: HCl, HBr, HI, HNO3, H2SO4, HClO4


• strong bases. CORRECT ANSWER: all hydroxide bases