10 Jul Answer On Question #64158 – Chemistry – General Chemistr
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.
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