Author: Anonymous

Give the definition for effusion.A) gas molecules mix equallyB) gas molecules spread out in a concentration gradientC) gas molecules escape from a container into a vacuum through a small holeD) average distance between collisionsE) gas molecules mix unequally

 While traveling, an airplane passenger placed a bag of potato chips in his checked luggage. When he opened the luggage, the bag had exploded and potato chips were everywhere in his luggage. Which gas law is this an example of?A) Avogadro’s LawB) Ideal Gas LawC) Charles’s LawD) Boyle’s LawE) Dalton’s Law

Which of the following is considered a molecular solid?A) AgB) NaClC) CO2 D) NeE) None of these is a molecular solid.

Rank the following elements in order of increasing ionization energy: P, F, Cs, MgA) Cs < Mg < F < PB) Cs < F < Mg < PC) F < P < Mg < CsD) P < Mg < F < CsE) Cs < Mg < P < F

Balance the following chemical equation: Li(s) + H2O(l) → LiOH(aq) + H2(g)A) Li(s) + H2O(l) → LiOH(aq) + H2(g)B) 2Li(s) + 2H2O(l) → 2LiOH(aq) + H2(g)C) Li(s) + 2H2O(l) → LiOH(aq) + H2(g)D) Li(s) + 2H2O(l) → 2LiOH(aq) + 2H2(g)E) Li(s) + 2H2O(l) → 2LiOH(aq) + H2(g)

Which of these molecules or ions has a violation of the octet rule (other than H)?A) BH3B) F2C) PH3D) NO3−E) SF2

Identify the spectator ion(s) in the following reaction:        Zn(s) + Cu(NO3)2(aq) → Cu(s) + Zn(NO3)2(aq)A) Cu2+(aq) and NO3–(aq)B) Zn2+(aq) and Cu2+(aq)C) Zn2+(aq) and NO3–(aq)D) NO3–(aq) onlyE) There are no spectator ions.

All of the following may change during a chemical reaction exceptA) the total number of atoms in the system.B) the temperature of the system.C) the color of the system.D) the total number of molecules in the system.E) the physical state of the system.

Which of the following best represents the bonding for NaBr? Screen Shot 2025-06-26 at 3.59.15 PM.png

Choose the best Lewis structure for OCl2 Screen Shot 2025-06-26 at 4.06.33 PM.png