GradePack

    • Home
    • Blog
Skip to content
bg
bg
bg
bg

GradePack

____________ predicts whether flow is laminar or turbulent. …

____________ predicts whether flow is laminar or turbulent.  

Read Details

__________ indicates the volume of blood moving during a par…

__________ indicates the volume of blood moving during a particular time.   Select ALL that apply. 

Read Details

In which of the following aqueous systems would you expect A…

In which of the following aqueous systems would you expect AgCl to have the greatest solubility? Hint: Do not forget to consider acid-base properties of salts. 

Read Details

The reaction A(l) → B(g) + C(g) is shown to be exothermic….

The reaction A(l) → B(g) + C(g) is shown to be exothermic. Which of the following is true concerning the reaction?

Read Details

The diagrams here represent solutions at various stages in t…

The diagrams here represent solutions at various stages in the titration of a weak base B (such as NH3) with HCl. Which image best represents the solution in the buffer zone between the initial and equivalence points?                                                               

Read Details

Methane gas can be produced by the reaction of solid carbon…

Methane gas can be produced by the reaction of solid carbon with hydrogen gas as follows                     C(s)   +   2 H2(g)  ⇌   CH4(g) For this reaction at equilibrium, Kp =  0.38.  A vessel containing carbon is sealed and injected inititally with hydrogen to a pressure of 2.0 atm and with methane to a pressure of 2.0 atm. What happens as the reaction proceeds toward equilibrium?  Hint:  this is a K vs Q question.  Which way will the reaction proceed to reach equilibrium?

Read Details

Consider the titration of 10.0 mL of 0.10 M HClO4 with KOH. …

Consider the titration of 10.0 mL of 0.10 M HClO4 with KOH.   What is the pH after 20.0 mL of 0.35 M KOH has been added?

Read Details

Consider the titration of 50.0 mL of 0.10 M HClO4 with KOH. …

Consider the titration of 50.0 mL of 0.10 M HClO4 with KOH.   What is the pH after 20.0 mL of 0.50 M KOH has been added?

Read Details

An example of a reaction that experiences a decrease in entr…

An example of a reaction that experiences a decrease in entropy, ΔS < 0, yet is spontaneous because of the release of a large quantity of heat, ΔH = −151 kJ, is the formation of solid ammonium nitrate from the reaction of gaseous nitric acid with gaseous ammonia.                        HNO3(g)   +   NH3(g)   →  NH4NO3 (s) The change in free energy under standard condition is: ΔG° =  −93. kJ/mol.  Calculate the equilibrium constant, K, for the reaction at T = 298 K.

Read Details

Given the standard reduction potentials below:  Half Rea…

Given the standard reduction potentials below:  Half Reaction E° red (V) Ag+ (aq)  + e–  →  Ag (s)  +0.80 Fe3+ (aq)  +   e–  → Fe2+ (aq)   +0.77 Cu2+ (aq)  + 2 e–  → Cu (s)    +0.34 Sn4+ (aq) + 2 e–  → Sn2+ (aq)   +0.15 2H+ (aq) + 2 e–  →  H2 (g)  0.00 Pb2+ (aq) + 2 e –  → Pb (s)  –0.13 Sn2+ (aq)  +  2 e–  → Sn (s)  –0.14 Ni2+ (aq) + 2 e –  → Ni (s)   –0.28 Cd2+ (aq) + 2 e –  → Cd (s)   –0.40 Fe2+ (aq) + 2 e –  → Fe (s) –0.44 Cr3+ (aq) + 3 e– →  Cr (s)      –0.74 Zn2+ (aq) + 2 e –  → Zn (s)  –0.76 Al3+ (aq) + 3 e– →  Al (s) –1.66   Which of the following substances would be the weakest oxidizing agent?  

Read Details

Posts pagination

Newer posts 1 … 35,596 35,597 35,598 35,599 35,600 … 69,611 Older posts

GradePack

  • Privacy Policy
  • Terms of Service
Top