Please see the attached file for full problem description.
2. Which half-reactions represent oxidation and which reduction? Explain your reasoning.
a. Fe --> Fe + 2 e
4+ _ 2+
b. Ni + 2 e --> Ni
c. 2 H O + 2 e --> H + 2 OH
4. Explain the difference between a rechargeable battery and one that must be discarded. Contrast a NiCad battery with an alkaline battery in your explanation.
7. Two common units associated with electricity are volts and amps. What does each unit measure?
14. What is the difference between a storage battery and a fuel cell?
Does this representation predict that the carbon-to-carbon-to-carbon bond angles in polyethylene are all 180 degrees? Explain your reasoning.
19. The structure for the styrene monomer:
C == C
H (a pentagon with a circle inscribed in the middle)
See the attached file.
2. A reaction which occurs by the loss of electrons is known as an oxidation reaction and a reaction in which electrons are accepted is called a reduction reaction.
a. Loss of an electron occurs and it is an Oxidation Reaction
b. Here Ni accepts two electrons thus getting reduced to Ni2+ : A reduction reaction
c. Here H+ accepts electrons and gets reduced to Hydrogen, hence a reduction reaction
4. Although there are many different types, batteries are generally divided into two types?primary and secondary. Primary batteries are used once and thrown away. Secondary batteries can be recharged and used again. Generally speaking, alkaline batteries are primary batteries. Rechargeable batteries contain reversible chemical materials, allowing them to be recharged again and again.
Alkaline batteries were not designed to meet the ...
Solution is 800 words and includes an illustration of the molecular formula for styrene in the attachment.
1. Combustion of 5.13g of ibuprofen a widely used painkiller produces 14.224g CO2, 4.029g H2O. Ibuprofen contains only carbon hydrogen and oxygen atoms. If the molecular weight of ibuprofen is liss than 400g/mol determine the molecular formula.
2. A. From the data on the last page calculate the free energy change for the reaction at 25C
2CH4(g) --->C2H4(g) + 2H2(g)
B. At what temperature will the reaction go from spontaneous to non-spontaneous?
3. Give the electronic configuration for the following atoms or ions.
4. Complete the molecular orbit energy diagram for CO and determine its bond order. s CO paramagnetc of diamagnetic?
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