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1. Agriculture most likely began
1 answer:
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<u>Answer:</u>
<em>Theoretical density values </em>
- brass-
- bronze-
- steel-
<u>Explanation:</u>
All of these substances are<em> </em>alloys (a substance made from melting two or more substances, one of them usually being a metal). Brass is a combination of copper and zinc, bronze is mostly copper, tin and other non-metals as well and steel is majorly made up of iron and copper. These alloys have various uses and varying importance in different kinds of industries.
Answer:
(a) Two electrochemical half reactions for ethanol is written below
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(b) The direct oxidation of the fuel will occur in a solid oxide fuel cell but we have to compete with other sets of chemical electrochemical reaction such as water-gas-shift reaction
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(c) The electrochemical half reaction that could convert ethanol directly into a fuel cell that conducts hydrogen ions is shown below
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(d) The half reactions that would be required are shown below
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