Which type of reaction does this diagram represent? A central starburst has superscript 2 upper H and superscript 3 upper H pointing to it, and n plus energy and superscript 4 upper H e plus energy pointing away from it. nuclear fission because an atom is splitting into two fragments nuclear fusion because the products that are produced are radioactive nuclear fission because a large amount of energy is being released nuclear fusion because atomic nuclei combine to form a heavier nucleus

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

Which statement correctly describes the phosphate ion, ? it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge on the phosphorus atom.

When did stem cell research become known ? who discovered stem cell? what experiments or studies have been conducted so far?