Answer:
Electrons are in orbitals, each orbital can take two electrons and each electron would have an opposite spin. - Orbitals can have no electrons, one electron or be filled with two electrons. - Orbitals are arranged in energy levels
Explanation:
Answer:
(a) The coefficient of performance of an irreversible refrigeration cycle is always less than the coefficient of performance of a reversible refrigeration cycle when both exchange energy by heat transfer with the same two reservoirs.
Explanation:
According to the Kelvin–Planck statement of the second law of thermodynamics ,it is not possible to construct a device which operates in cycle and does not produce effect on the environment than the production of work.
We know that
Coefficient of performance is the ratio of desired effect to the work input in a cycle.
Given all option is correct but most appropriate option is a.
So the option a is correct
(a) The coefficient of performance of an irreversible refrigeration cycle is always less than the coefficient of performance of a reversible refrigeration cycle when both exchange energy by heat transfer with the same two reservoirs.
Answer:
To isolate the microorganism from the mice and determine if it is identical to the original unknown bacteria.
Explanation:
The next step to take is to isolate the microorganism from the mice and determine if it is identical to the original unknown bacteria.
Koch's postulates opines four criterion for which a microbe will be regarded as a causative agent of a disease if the following takes place.
That, the microorganism should be present in all the organism suffering from the disease. That these isolated microorganism are meant to be grown in a pure culture. After being grown in the culture, they should be reintroduced in the susceptible but healthy host. In conclusion, from the experimental host, the microorganism must be re-isolated. Hence, cultured to see whether it is identical to the original specific microorganism.
Answer:
(Li) Lithium
Explanation:
(Li) lithium and K potassium both belong to first group (alkali metals) and thus have similar chemical properties.