CHEMISTRY 141 FINAL EXAM (2026-2027)
QUESTIONS AND ANSWERS GRADED A+
Under what conditions would real gases have the maximum deviation from ideal
behavior?
high pressure and low temperature
One way in which real gases differ from ideal gases is that the molecules of a real
gas...
are attracted to each other
Over the years, scientists have used two different models to describe the nature of
light. What are these two ways that light is described?
scientist describe light as waves and particles
What set of variables of a gas sample would have an inverse relationship?
pressure and volume
What is ground state?
the lowest possible energy state
,What is partial pressure?
Pa=Na/Nt x Pt
What is the value and unit for STP?
0 degrees celsius, 1 atm
What is Boyle's Law?
the pressure of a gas is inversely proportional to its volume at a constant T and n
All atoms of the same element have the same number of?
protons
Sugar is a compound that dissolves readily in water. Which method is best for
separating a mixture of sugar and water?
distillation
Group 17 elements are also know as
halogens
, What is an isotope?
an atom having the same number of protons as another atom but with different
numbers of neutrons
What is the Law of Conversation of Mass?
masses are conserved; neither created or destroyed
What is an atomic number?
is the number of protons
According to Valence Bond Theory, what types of orbitals does carbon use for
bonding in diamond?
The sp3 hybridized that form upon mixing s and p orbitals
Why does graphite conduct electricity while diamond does not?
Some of the valence electrons in graphite, but not in diamond, are delocalized in pi
molecular orbitals that extend across the entire network, so electrons can move
freely in these orbitals
Which is likely to have the highest melting point? MgF2, MgBr2, or NaBr
MgF2
QUESTIONS AND ANSWERS GRADED A+
Under what conditions would real gases have the maximum deviation from ideal
behavior?
high pressure and low temperature
One way in which real gases differ from ideal gases is that the molecules of a real
gas...
are attracted to each other
Over the years, scientists have used two different models to describe the nature of
light. What are these two ways that light is described?
scientist describe light as waves and particles
What set of variables of a gas sample would have an inverse relationship?
pressure and volume
What is ground state?
the lowest possible energy state
,What is partial pressure?
Pa=Na/Nt x Pt
What is the value and unit for STP?
0 degrees celsius, 1 atm
What is Boyle's Law?
the pressure of a gas is inversely proportional to its volume at a constant T and n
All atoms of the same element have the same number of?
protons
Sugar is a compound that dissolves readily in water. Which method is best for
separating a mixture of sugar and water?
distillation
Group 17 elements are also know as
halogens
, What is an isotope?
an atom having the same number of protons as another atom but with different
numbers of neutrons
What is the Law of Conversation of Mass?
masses are conserved; neither created or destroyed
What is an atomic number?
is the number of protons
According to Valence Bond Theory, what types of orbitals does carbon use for
bonding in diamond?
The sp3 hybridized that form upon mixing s and p orbitals
Why does graphite conduct electricity while diamond does not?
Some of the valence electrons in graphite, but not in diamond, are delocalized in pi
molecular orbitals that extend across the entire network, so electrons can move
freely in these orbitals
Which is likely to have the highest melting point? MgF2, MgBr2, or NaBr
MgF2
