The term reagent is commonly used in chemistry. What does it mean? Define the term clearly and concisely. Give two examples of the mixture. Define the term electrolysis as used in chemistry. Define hydrodynamic voltammetry. Is the cation in Mn2S3 manganese(II) or manganese(III)? Explain. Wha...
The basic idea of portable power is nothing new; people have always had ways of making energy on the move. Evenprehistoric humans knew how to burn woodto make fire, which is another way of producing energy (heat) from chemicals (burning releases energy using achemicalreaction called combustion...
In the longer term, the solution may be to switch vehicles over from gasoline engines and diesel to battery electricity and electric fuel cells, which are a bit like batteries powered by hydrogen gas that never run flat. Silent and—theoretically—pollution free, they're among the cleanest and...
Explain the importance of the carbon cycle. What geologic evidence do we have to determine the spreading rates of the oceanic plates over Earth's history? Explain the term Crystal system in detail. Why are fossils only found in sedimentary rocks? Define what is an 'interstital impuri...
improve lives and safeguard our future. NASA develops new ways to observe and study Earth's interconnected natural systems with long-term data records. The agency freely shares this unique knowledge and works with institutions around the world to gain new insights into how our planet is changing....
Explain the process of fractional distillation to separate a solution of two liquids into pure components. What do you understand by the term "electrolysis of water"? Describe how the process of filtration can be used to separate a mixture into its components. Give an example. Give a brief hi...
(about 5–10 percent as much as a single 1–2MW wind turbine) in Japan, another is generating about half as much in Hawaii, and a third is now producing about 1MW in India; these are tiny amounts of energy that don't prove the long-term commercial viability of OTEC in a world ...
Define the term salt bridge. What is the role of the salt-bridge in an electrochemical cell? Explain your answer. How will a large air bubble in the salt bridge affect the operation of the cell? Can you suggest a reason? What purpose does the salt...