Project #10341 - Homework Help

1. (3 pts) Choose the nucleus with which curium-246 must be bombarded to yield nobelium-254 and four neutrons.

2. (3 pts) Cesium-129 decays by electron capture and has a half-life of 32.1 hours. If a sample contains 273 mg Cs-129 initially, what mass of Cs-129 remains undecayed after 17.0 hours?

3. (3 pts) Phosphorus-32 has a half-life of 14.3 days. Calculate the rate constant for the radioactive decay of P-32.

4. (3 pts) Oxalic acid is used to remove rust stains. Why? (Your explanation should include complex ion formation.)

5. (3 pts) How do the d-electrons and the arrangement of their orbitals affect the color of the transition metal complex?

6. (6 pts) Write the charge for the transition metals in the following coordination compounds.

a. [Co(NH3)5Cl]Cl2

b. [Fe(en)2(NO2)2]2SO4

c. [Pt(NH3)4I2][PtI4] cation anion

Subject Science
Due By (Pacific Time) 08/05/2013 12:00 pm
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