Accelerated Chemistry Practice Studio

Unit 8: Kinetic Molecular Theory, Empirical & Ideal Gas Laws, Partial Pressures, & Hyperbarics.

Seed: #loading

Chemistry Reference Center

Transition (3d)

Select any element cell above to inspect its atomic mass, valence electron count, and molar mass for stoichiometry.

Pressure Equivalents & Absolute Temperature

1.000 atm760.0 mmHg = 760.0 torr = 101.325 kPa = 1.01325 bar

Kelvin Temperature (K)T(K) = T(°C) + 273.15 (Gas laws always require Kelvin)

STP ConditionsStandard Temperature & Pressure: 0 °C (273.15 K) and 1.000 atm

Molar Volume at STP22.414 L/mol (for 1 mole of any ideal gas at STP)

Empirical & Combined Gas Laws

Boyle's Law (constant T, n)P₁ × V₁ = P₂ × V₂ (Inverse relationship)

Charles's Law (constant P, n)V₁ / T₁ = V₂ / T₂ (Direct relationship with Kelvin T)

Gay-Lussac's Law (constant V, n)P₁ / T₁ = P₂ / T₂ (Direct relationship with Kelvin T)

Combined Gas Law (constant n)(P₁ × V₁) / T₁ = (P₂ × V₂) / T₂

Ideal Gas Equation & Gas Mixtures

Ideal Gas LawP × V = n × R × T

Universal Gas Constant (R)0.08206 L · atm / (mol · K) = 8.314 J / (mol · K)

Gas Density & Molar Massd = (P × M) / (R × T) | M = (m × R × T) / (P × V)

Dalton's Partial PressuresP_total = P_A + P_B + ... | P_A = X_A × P_total

Collecting Gas Over WaterP_dry = P_total - P_water vapor (at measured water temperature)

Storyline Anchor: Hyperbaric Physiology & Scuba Diving

Hydrostatic Depth PressureEvery 10 meters (~33 ft) of seawater adds 1.0 atm of hydrostatic pressure (P_ambient = 1 atm + depth_m / 10).

Decompression Sickness (The Bends)High ambient pressure drives nitrogen into blood (Henry's Law). Rapid ascent causes dissolved N₂ to form gas bubbles in capillaries.

⠿ Scientific Calculator

Welcome to XL Chem Practice

Enter your first and last name below. This generates your unique, stable problem parameters for Unit 8 and goes on your printed receipt with its check code.