General Chemistry Answers

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Cu (s) + Ni+2 (aq) → Cu+2 (aq) + Ni (s)

calculate the amount of heat released in the complete combustion of 8.17 g of Al to form Al2O2(s) at 25 degrees C and 1 atm.

Change in heat of fusion for Al2O3 (s)=-1680kj/mol

4Al(s) + 3 O2(g) to 2Al2O3(s)

calculate change in heat at 25 degrees for the reaction below.

2ZnS(s) +3O2 (g) to 2ZnO(s) +2SO2 (g)

-206.0 0 -350.5 -296.8

1. Water is a good solvent

Relate this property to the role of water in plant nutrition:

Answer:

2. Water has a high specific heat.

Relate this property to changing climate and the capacity of bodies of water to

act as temperature buffer:

Answer:

3. The boiling point of water unusually high

Relate this property to questions on small water bodies drying up:

Answer:

4. Solid water is less dense, and in fact floats on liquid water.

Relate this property to the survival of aquatic organisms in temperate countries:

Answer:

What is the equation for the reaction of calcium iodide and nickel?

In each of the following pairs, which is more likely to gain electrons(s)?

balanced the equation of the reaction Fe(s)+O2(g)→Fe2O3(S)

Given, Cd(s) + 2Ht(aq) Cd2"(aq) Hzlg) State the effect on the cell potential, Eceli when the following changes are made: (a) The pressure of hydrogen gas is increased in the cathode compartment: (b) Sodium hydroxide is added into the electrolyte at the cathode: (c) Concentration of Cd?* is decreased. (d) Diameters of electrodes are increased

If 28.1 grams of ammonium chloride react to form 8.9 grams of ammonia, how many grams of hydrogen chloride must simultaneously be formed?