Author: Anonymous

A 25.0 mL sample of 0.105 M HCl was titrated with 31.5 mL of NaOH. What is the concentration of the NaOH?A) 0.0833 MB) 0.132 MC) 0.105 MD) 0.075 ME) none of the above

What is the pH of a solution that has a [OH-] = 0.0033 M?A) 2.48B) 7.0033C) 11.52D) 3.3E) none of the above

Define solubility.A)  a solid that does not dissolve in a gasB)  the amount of a substance that will dissolve in a given amount of solventC)  the amount of a substance that will dissolve in a given amount of soluteD)  a solid mixed with another solidE)  a liquid that does not dissolve in another liquid

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.