All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: A gas mixture contains 75.2% nitrogen and 24.8% krypton by mass.What is the partial pressure of krypton in the mixture if the total pressure is 776 mm Hg ?

Solution: A gas mixture contains 75.2% nitrogen and 24.8% krypton by mass.What is the partial pressure of krypton in the mixture if the total pressure is 776 mm Hg ?

Problem

A gas mixture contains 75.2% nitrogen and 24.8% krypton by mass.

What is the partial pressure of krypton in the mixture if the total pressure is 776 mm Hg ?

Solution
  • Convert this following mass percent to moles to find the mole fraction of N2 and Kr. 
  • Then use provided total pressure to determine the partial pressure of each gas by multiplying the mole fraction of gas to the total P of solution:

  • Assume that the % mass given were mass in grams, then convert it to moles

MM of N2: N - 14.01 (2) = 28.02 g/mol

MM of Kr: 83.80 g/mol

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