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Physical adsorption (physisorption)
Chemical adsorption (chemisorption)
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In the 1950's, biochemists Stanley Miller and Harold Urey, conducted an experiment which demonstrated that several organic compounds could be formed spontaneously by simulating the conditions of Earth's early atmosphere. ... After allowing the experiment to run for one week, they analyzed the contents of the liquid pool. The Miller-Urey experiment provided the first evidence that organic molecules needed for life could be formed from inorganic components. Some scientists support the RNA world hypothesis, which suggests that the first life was self-replicating RNA. ... Simple organic compounds might have come to early Earth on meteorites.
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- It is a device to convert chemical energy into electrical energy.
- It is based upon the redox reaction which is spontaneous.
- To set up this cell, a salt bridge or porous pot is used.
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Sai Babu T 6 years, 8 months ago
The accelerated rates of species extinctions that the world is facing now are largely due to human activities. There are four major causes (‘ The Evil Quartet ’ is the sobriquet used to describe them).
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