Answer:
For organic compounds, carbon and hydrogen are listed as the first elements in the molecular formula, and they are followed by the remaining elements in alphabetical order. For example, for butane, the molecular formula is C 4 H 10.
Explanation:
B. energy level of outer electrons
C. nuclear charge
D. number of valence electrons
A simple answer to this "a theory".
Answer: the percentage of acetic acid will be low.
Explanation: The major aim during titration of acids and bases is to determine the endpoint , that is exact point where the acid in the beaker changes colour, (in this case, pink )with an additional drop from the burette containing the base, since it is usually difficult to mark the equivalence point that tells us when all the substrate in the beaker has been neutralized completely with the buretted substance.
Overshooting the end point is an error which can occur when the person involved in the the titration accidently goes beyond this endpoint by adding too much of the substance(base) from the burette into the beaker missing the exact endpoint.
This implies that the person has added too much of the burreted liquid, ie the base than required , making the acid in the beaker to continue to react resulting to a lower concentration of the acid (acetic acid) with excess base.(NaOH)
(2) helium gas
(3) greenhouse gases, such as CO2
(4) radioisotopes with long half-lives
Answer: Option (4) is the correct answer.
Explanation:
In a nuclear power plant, nuclear fission and fusion reactions occur.
During these reaction a large amount of heat is releases along with the release of radioisotopes. These radioisotopes have long half-lives as a result these emit harmful radiations which can either cause burns or blindness to the people around the nuclear power plant etc.
For example, isotope of Uranium-238 have longer half life.
Thus, we can conclude that a serious risk factor associated with the operation of a nuclear power plant is the production of radioisotopes with long half-lives.
The major risk associated with the operation of nuclear power plants is the generation of radioisotopes with long half-lives, such as cesium-137 and strontium-90. These remain harmful for thousands of years.
A serious risk factor associated with the operation of a nuclear power plant is the production of radioisotopes with long half-lives. Apart from the immediate dangers posed by nuclear accidents, these radioisotopes, such as cesium-137 and strontium-90, remain radioactively harmful for a long period of time, often thousands of years. Safe containment and disposal of these substances is a significant challenge associated with nuclear energy production.
In contrast, acid rain is generally caused by burning fossil fuels, not nuclear power. Nuclear power plants do not produce significant amounts of greenhouse gases such as CO2. Helium gas is one of the byproducts of nuclear fusion, not fission, which is used in nuclear power plants, and is not dangerous.
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