Answers
answer:
pvl stands for polyvinyl alcohol
explanation:
polyvinyl alcohol, also known as pvoh, pva, or pval, is a synthetic polymer that is soluble in water. it is effective in film forming, emulsifying, and has an adhesive quality. it has no odor and is not toxic, and is resistant to grease, oils, and solvents. it is ductile but strong, flexible, and functions as a high oxygen and aroma barrier.
(toppr.com)
H2S is the analogous compound to H2O, structurally similar, but different chemical properties. Oxygen (O2) is a gas, sulfur at ambient conditions (S8) is a solid. If you look to either side of oxygen (nitrogen and fluorine) they possess respectively 3 and 1 electrons available for forming bonds.
Oxygen=46.6%
Explanation:oxygen was the most abundant element earth's crust.
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