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Chemistry 132 ACS exam study notes Exam 2024/2025 Questions With Completed & Verified Solutions.
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Chemistry 132 ACS exam study notes Exam 2024/2025 Questions With Completed & Verified Solutions.
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Chemistry 132 ACS exam study notesWhere is the mass number located on an element symbol? - ANS the superscript
Mass number - ANS protons + neutrons
Where is the atomic number located on an element symbol? - ANS the subscript
Atomic number - ANS number of protons
Isotopes - ANS elements with different numbers of neutrons
How to solve for an empirical formula - ANS Assume percentages are grams, convert to moles,
divide each number by the smallest number of moles to get subscripts
On an electromagnetic spectrum, which side has the highest energy level? - ANS Left
Electron orbitals are (closer together / farther apart) the further they are from the nucleus - ANS
closer together
Tetrahedral angle - ANS 109.5°
What groups are often tetrahedral? - ANS 4 and 14
Trigonal planar angle - ANS 120°
What groups are often trigonal planar? - ANS 3 and 13
What element is usually in trigonal planar atoms and why? - ANS boron, because it is an
exception to the octet rule
Trigonal pyramidal angle - ANS 107°
What groups are often trigonal pyramidal? - ANS 5 and 15
Bent angle for H2O - ANS 104.5°
Bent angle for not H2O - ANS 109.5°
What groups are often bent? - ANS 6
, A bent atom is comprised of - ANS 2 elements bonded to a central atom and 2 unshared
electron pairs
Linear angle - ANS 180°
a bond that results when atoms exchange electrons - ANS ionic bond
a bond that results when atoms each contribute an electron to a shared pair - ANS covalent
bond
a covalent bond in which one of the atoms furnishes both electrons - ANS coordinate covalent
bond
a bond that results when atoms free one or more valence electrons to the metal lattice - ANS
Metallic bond
What kind of compounds conduct a current in water? - ANS ionic compounds
What is Avogadro's number? (#) - ANS 6.02 x 10^23
What is Avogadro's number? (meaning) - ANS the number of atoms in one mol
What does a combustion reaction of a hydrocarbon yield? - ANS CO2 and H2O
What is standard temperature? - ANS 273.15K
What is the relationship of mols to liters at standard temperature? - ANS 1 mol = 22.4 L
What is standard atmospheric pressure? - ANS 760mmHg
Lower vapor pressures have ______ boiling points - ANS higher
Greater vapor pressures have ______ surface tension - ANS lower
Heat of melting / fusion - ANS the amount of heat needed to melt a solid without changing it's
temperature
Specific heat - ANS the amount of heat required to raise the temperature by 1°C
Heat formula - ANS Q = mvΔT
Q - heat
m - mass
v - specific heat
ΔT - change in temperature
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