8/12/25, 8:14
PM
BYU ONLINE: CHEMISTRY 043: SPEEDBACK
LESSON 3 EXAM QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS VERIFIED LATEST UPDATE
GRADED A++ 2025/2026
Terms in this set (30)
If a sample of helium 403 torr
gas at 900 torr and
25°C is allowed to
expand from 2.6 L to
5.8 L without
changing the
temperature, what
pressure will the
helium gas exert?
275 torr
962 torr
403 torr
2.01 x 10^3 torr
The expression P = Gay-Lussac's law
kT is a statement of
which of the following
laws?
1/
16
,8/12/25, 8:14
PM
Boyle's law
Gay-
Lussac's
law
Charles's
law
Avogadro'
s law
Standard pressure is 760 mm
the pressure exerted
by a column of (okay don't get mixed up because I
mercury exactly how accidentally put the first one and it was
high? wrong because it was cm and the correct
answer is mm... remember, it's mm Hg!)
760 cm
273 mm
1m
760 mm
A sample of oxygen 640 mL
occupies 560 mL
when the pressure is
800 mm Hg. At
constant
temperature, what
volume does the
gas occupy when
the pressure
decreases to 700
2/
16
, 8/12/25, 8:14
PM
mm Hg?
600 mL
490 mL
640 mL
80 mL
A sample of oxygen 270 mL
occupies 320 mL
when the pressure is
800 mm Hg. At
constant
temperature, what
volume does the gas
occupy when the
pressure increases to
950 mm Hg?
190 mL
380 mL
600 mL
270 mL
All of the following gas Boyle's law
laws are direct
proportions except
which of the following
laws?
Charl
3/
16
PM
BYU ONLINE: CHEMISTRY 043: SPEEDBACK
LESSON 3 EXAM QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS VERIFIED LATEST UPDATE
GRADED A++ 2025/2026
Terms in this set (30)
If a sample of helium 403 torr
gas at 900 torr and
25°C is allowed to
expand from 2.6 L to
5.8 L without
changing the
temperature, what
pressure will the
helium gas exert?
275 torr
962 torr
403 torr
2.01 x 10^3 torr
The expression P = Gay-Lussac's law
kT is a statement of
which of the following
laws?
1/
16
,8/12/25, 8:14
PM
Boyle's law
Gay-
Lussac's
law
Charles's
law
Avogadro'
s law
Standard pressure is 760 mm
the pressure exerted
by a column of (okay don't get mixed up because I
mercury exactly how accidentally put the first one and it was
high? wrong because it was cm and the correct
answer is mm... remember, it's mm Hg!)
760 cm
273 mm
1m
760 mm
A sample of oxygen 640 mL
occupies 560 mL
when the pressure is
800 mm Hg. At
constant
temperature, what
volume does the
gas occupy when
the pressure
decreases to 700
2/
16
, 8/12/25, 8:14
PM
mm Hg?
600 mL
490 mL
640 mL
80 mL
A sample of oxygen 270 mL
occupies 320 mL
when the pressure is
800 mm Hg. At
constant
temperature, what
volume does the gas
occupy when the
pressure increases to
950 mm Hg?
190 mL
380 mL
600 mL
270 mL
All of the following gas Boyle's law
laws are direct
proportions except
which of the following
laws?
Charl
3/
16
