Plants and animals RE a carbon source during respiration. they take in Oxygen and give out Carbon (IV) oxide as a by product. Combustion of fossil fuels is also source of carbon (IV) Oxide.
Formation of fossils from dead plants and animals is a carbon sink. photosynthesis is also a carbon sink as plants take in carbon (IV) Oxide that is used to make food.
Group 18 is the only group in periodic table in which all the elements are nonmetals. This group contains F, Cl, Br, I and At and also the other name of this group is halogen which means salt producer.
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Answer: Option (a) is the correct answer.
Explanation:
As we know that entropy is the measure of degree of randomness. So, more is the mass of an atom more will be the electrons present in it and hence, more will be the repulsion between them.
As a result, more will be the entropy of the atom. For example, He, Ne, Ar, Kr are all group 18 elements. And, when we move down a group then there occurs an increase in atomic size of the atoms. Therefore, entropy also increases on moving down a group.
Thus, we can conclude that the correct order of increasing standard molar entropy for the noble gases is as follows.
He < Ne < Kr < Ar
Answer:
Water splitting is the chemical reaction in which water is broken down into oxygen and hydrogen: 2 H2O → 2 H2 + O. Efficient and economical photochemical water splitting would be a technological breakthrough that could underpin a hydrogen economy.
Explanation: 2 H2O → 2 H2 + O.
Answer:
For gene therapy, stem cells can be trained in a lab to become cells that can help fight disease. Liposomes. These fatty particles have the ability to carry the new, therapeutic genes to the target cells and pass the genes into your cells' DNA.
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