Note:

1. You must clearly show all steps of logical solutions. Answers alone with no work shown will not be accepted.
2. Be sure to give answers correct units and significant figures.

 

            1.True or false questions

A. All compounds containing hydrogen are acids.

B. In water as [H⁺] increases pH increases

C. One function of an auto catalytic converter is to convert CO

     to CO₂             

D. Agricultural chemicals are a source of water pollution.

E. When an atom emits gamma radiation it becomes a different element.

F. As a radioactive element decays its half life remains constant.

G  Chlorofluorocarbon compounds are believed to be catalysts for the

                       Stratospheric decomposition of ozone.

H. When water is added to an acid solution the pH changes.

I.   None of the products of fission of uranium are radioactive.

J.   Two key gases contributing to acid rain are NH₃ and CH₄

 

_              2.  A water solution has 1.00x10^-4 moles of H⁺ in 10.00 liters

                     A. What is the [H⁺] in the solution?

                     B. What is the pH ?

                     C. What is the [OH^-] ions?

                     D. Is the solution acidic or basic ?

                     E. What is the pH if water is added to make the volume 100.0 liters?

            3.  Giving reasons for your answers, would each of the following water solutions

                  have a pH less than, equal to, or greater then 7.00?

                  A. HNO₃  B. NaCl  C. NH₃ D, CH₃COOH E. SO₃

            4. What is the pressure in atmospheres of 175 grams of N_2  gas in

                  an 8.00L container at 35.0^oC ?

            5.                      2NaN₃ â 2Na + 3N₂

                  How many liters of N₂ gas_  result at 25.0^oC and 0.975 atm when 105g

                  of NaN₃ react ?

            6. A. How do the atomic number and mass number change when an atom

                      emits a beta particle?

                 B. How do the atomic number and mass number change when an atom

                     emits an alpha particle?

            7. How many grams of NaOH are in 865mL of a 0.500M solution?

 

            8.  Nuclear fission and nuclear fusion are both high energy producing

                  processes. How do they differ?

            9.   If a person breathes in 20.0 m³Â of air per day^  and the air contains 0.225

                   milligrams of particulates per m³, How many grams of particulates

                   does the person breathe in per day?

            10. Person A has well water with 0.011 ppm (parts per million) of Pb^2+.

^{                             Â} Person B has well water with 6.50x10^-6 grams of Pb²⁺ in 5.00L.

                   Giving a reason for your answer, which well water has a lower

                   Concentration of Pb²⁺ ?

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Status NEW Posted 27 Apr 2017 02:04 AM My Price 13.00

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