CHEM133 A002 FALL 2026 Digital Ideal Gas Law -
Beyond Labz COMPLETE WRITTEN EXAM (100 Questions
with Answers & Rationales) GUARANTEED PASS EXAM
ALREADY GRADED A+
EXAM OVERVIEW
This examination covers the Digital Ideal Gas Law Lab for CHEM133 A002 Fall
2026 using the Beyond Labz virtual laboratory platform. The Ideal Gas Law
describes the behavior of ideal gases through the equation PV = nRT . This exam
includes Boyle's Law, Charles's Law, Gay-Lussac's Law, Avogadro's Law, and the
Combined Gas Law.
SECTION A: MULTIPLE CHOICE (Questions 1-35)
Q1. The Ideal Gas Law equation is:
A) P₁V₁ = P₂V₂
B) V₁/T₁ = V₂/T₂
C) PV = nRT
D) P₁/T₁ = P₂/T₂
E) V₁/n₁ = V₂/n₂
Answer: C) PV = nRT
Rationale: The Ideal Gas Law combines Boyle's, Charles's, Gay-Lussac's, and
Avogadro's laws into a single equation: PV = nRT, where R is the universal gas
constant .
Q2. In the Ideal Gas Law, the variable "n" represents:
A) Pressure
B) Volume
,C) Number of moles
D) Temperature
E) Universal gas constant
Answer: C) Number of moles
Rationale: In PV = nRT, n represents the number of moles of gas. The other
variables are: P = pressure, V = volume, T = temperature (Kelvin), and R = universal
gas constant .
Q3. The value of the universal gas constant (R) in units of L·atm/(mol·K) is:
A) 0.0821
B) 8.314
C) 62.36
D) 1.987
E) 22.4
Answer: A) 0.0821
Rationale: The universal gas constant R = 0.0821 L·atm·mol⁻¹·K⁻¹ when pressure is
in atmospheres and volume is in liters. R = 8.314 J/(mol·K) for SI units (energy) .
Q4. At Standard Temperature and Pressure (STP), one mole of an ideal gas
occupies:
A) 22.4 L
B) 24.5 L
C) 11.2 L
D) 44.8 L
E) 1.0 L
Answer: A) 22.4 L
Rationale: At STP (0°C = 273 K and 1 atm), one mole of any ideal gas occupies 22.4
L. This is known as the standard molar volume .
,Q5. Which gas law describes the inverse relationship between pressure and
volume at constant temperature?
A) Charles's Law
B) Boyle's Law
C) Gay-Lussac's Law
D) Avogadro's Law
E) Combined Gas Law
Answer: B) Boyle's Law
Rationale: Boyle's Law states that at constant temperature and number of moles,
pressure and volume are inversely proportional: P₁V₁ = P₂V₂ .
Q6. Which gas law describes the direct relationship between volume and
temperature at constant pressure?
A) Boyle's Law
B) Charles's Law
C) Gay-Lussac's Law
D) Avogadro's Law
E) Dalton's Law
Answer: B) Charles's Law
Rationale: Charles's Law states that at constant pressure, the volume of a gas is
directly proportional to its absolute temperature: V₁/T₁ = V₂/T₂. Temperature must
be in Kelvin .
Q7. Which gas law describes the direct relationship between pressure and
temperature at constant volume?
A) Boyle's Law
B) Charles's Law
C) Gay-Lussac's Law
, D) Avogadro's Law
E) Henry's Law
Answer: C) Gay-Lussac's Law
Rationale: Gay-Lussac's Law (also called Amonton's Law) states that at constant
volume, pressure is directly proportional to absolute temperature: P₁/T₁ = P₂/T₂ .
Q8. Which gas law describes the direct relationship between volume and
number of moles at constant temperature and pressure?
A) Boyle's Law
B) Charles's Law
C) Gay-Lussac's Law
D) Avogadro's Law
E) Combined Gas Law
Answer: D) Avogadro's Law
Rationale: Avogadro's Law states that at constant temperature and pressure, the
volume of a gas is directly proportional to the number of moles: V₁/n₁ = V₂/n₂ .
Q9. In the Beyond Labz simulation for Boyle's Law, which variables are held
constant?
A) Pressure and volume
B) Temperature and number of moles
C) Volume and temperature
D) Pressure and temperature
E) Number of moles and pressure
Answer: B) Temperature and number of moles
Rationale: In the Beyond Labz Boyle's Law experiment, temperature and the
number of moles (amount of gas) are held constant while pressure and volume
vary inversely .
Beyond Labz COMPLETE WRITTEN EXAM (100 Questions
with Answers & Rationales) GUARANTEED PASS EXAM
ALREADY GRADED A+
EXAM OVERVIEW
This examination covers the Digital Ideal Gas Law Lab for CHEM133 A002 Fall
2026 using the Beyond Labz virtual laboratory platform. The Ideal Gas Law
describes the behavior of ideal gases through the equation PV = nRT . This exam
includes Boyle's Law, Charles's Law, Gay-Lussac's Law, Avogadro's Law, and the
Combined Gas Law.
SECTION A: MULTIPLE CHOICE (Questions 1-35)
Q1. The Ideal Gas Law equation is:
A) P₁V₁ = P₂V₂
B) V₁/T₁ = V₂/T₂
C) PV = nRT
D) P₁/T₁ = P₂/T₂
E) V₁/n₁ = V₂/n₂
Answer: C) PV = nRT
Rationale: The Ideal Gas Law combines Boyle's, Charles's, Gay-Lussac's, and
Avogadro's laws into a single equation: PV = nRT, where R is the universal gas
constant .
Q2. In the Ideal Gas Law, the variable "n" represents:
A) Pressure
B) Volume
,C) Number of moles
D) Temperature
E) Universal gas constant
Answer: C) Number of moles
Rationale: In PV = nRT, n represents the number of moles of gas. The other
variables are: P = pressure, V = volume, T = temperature (Kelvin), and R = universal
gas constant .
Q3. The value of the universal gas constant (R) in units of L·atm/(mol·K) is:
A) 0.0821
B) 8.314
C) 62.36
D) 1.987
E) 22.4
Answer: A) 0.0821
Rationale: The universal gas constant R = 0.0821 L·atm·mol⁻¹·K⁻¹ when pressure is
in atmospheres and volume is in liters. R = 8.314 J/(mol·K) for SI units (energy) .
Q4. At Standard Temperature and Pressure (STP), one mole of an ideal gas
occupies:
A) 22.4 L
B) 24.5 L
C) 11.2 L
D) 44.8 L
E) 1.0 L
Answer: A) 22.4 L
Rationale: At STP (0°C = 273 K and 1 atm), one mole of any ideal gas occupies 22.4
L. This is known as the standard molar volume .
,Q5. Which gas law describes the inverse relationship between pressure and
volume at constant temperature?
A) Charles's Law
B) Boyle's Law
C) Gay-Lussac's Law
D) Avogadro's Law
E) Combined Gas Law
Answer: B) Boyle's Law
Rationale: Boyle's Law states that at constant temperature and number of moles,
pressure and volume are inversely proportional: P₁V₁ = P₂V₂ .
Q6. Which gas law describes the direct relationship between volume and
temperature at constant pressure?
A) Boyle's Law
B) Charles's Law
C) Gay-Lussac's Law
D) Avogadro's Law
E) Dalton's Law
Answer: B) Charles's Law
Rationale: Charles's Law states that at constant pressure, the volume of a gas is
directly proportional to its absolute temperature: V₁/T₁ = V₂/T₂. Temperature must
be in Kelvin .
Q7. Which gas law describes the direct relationship between pressure and
temperature at constant volume?
A) Boyle's Law
B) Charles's Law
C) Gay-Lussac's Law
, D) Avogadro's Law
E) Henry's Law
Answer: C) Gay-Lussac's Law
Rationale: Gay-Lussac's Law (also called Amonton's Law) states that at constant
volume, pressure is directly proportional to absolute temperature: P₁/T₁ = P₂/T₂ .
Q8. Which gas law describes the direct relationship between volume and
number of moles at constant temperature and pressure?
A) Boyle's Law
B) Charles's Law
C) Gay-Lussac's Law
D) Avogadro's Law
E) Combined Gas Law
Answer: D) Avogadro's Law
Rationale: Avogadro's Law states that at constant temperature and pressure, the
volume of a gas is directly proportional to the number of moles: V₁/n₁ = V₂/n₂ .
Q9. In the Beyond Labz simulation for Boyle's Law, which variables are held
constant?
A) Pressure and volume
B) Temperature and number of moles
C) Volume and temperature
D) Pressure and temperature
E) Number of moles and pressure
Answer: B) Temperature and number of moles
Rationale: In the Beyond Labz Boyle's Law experiment, temperature and the
number of moles (amount of gas) are held constant while pressure and volume
vary inversely .
