Answer on Question #64158 - Chemistry - General Chemistry

1.                If 5.40 kcal of heat is added to 1.00 kg of water at 100⁰C, how much steam at 100⁰C is produced? Show all calculations leading to ananswer.

2.                TheKwofwatervarieswithtemperature.CalculatethepHofwaterat46⁰CwithaKw=1.219 x 10-14. Show all calculations leading to an answer.

3.                Calculate the hydroxide ion concentration of a solution with pH = 3.25. Show all calculations leading to ananswer.

4.                The following unbalanced equation describes the reaction that can occur when lead (II) sulfidereactswithoxygengastoproducelead(II)oxideandsulfurdioxidegas:

PbS + O2    PbO + SO2

Balance the equation and describe in words the electron transfer(s) that takes place.

5.                What type of radiation is emitted when chromium-51 decays into manganese-51? Show the nuclear equation that leads you to thisanswer.

6.                A radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. What was the identity of the original nucleus? Show the nuclear equation that leads you to this answer.