Igive 21 points +++ ! decompression sickness, or “the bends” as it’s commonly known, is a fear for many scuba divers. under the extreme pressure of the deep ocean, nitrogen and other gases from the air dissolve in a diver’s body tissues. if the diver rises too quickly, the sudden decrease in pressure causes the dissolved gas to bubble out of the tissue. the bubbles can enter a blood vessel and cause intense pain, and sometimes more severe injury. but what if the diver is a whale? previously, it was thought that whales did not suffer from the bends. scientists have discovered evidence in beached whales of nitrogen bubbles expanding and damaging vital organs. it is believed that sonar waves from nearby ships may have frightened the whales, causing them to surface too quickly. this can result in the bends. scientists have found small gashes in the bones of whale fossils, which are a sign of the bends. what conclusions can you draw from these fossils?

Write a brief passage describing a neutral atom of nitrogen-14 (n-14). describe the number of protons, neutrons, and electrons in the atom, where each type of particle is located, and how the terms atomic number, mass number, and atomic mass are related to the particles. use the periodic table to you. 14 protons and eletrons since its a neutral atom

Why are the trends and exceptions to the trends in ionization energy observed?

Straightforward questions answered in the powerpoint slidesreaction: heating the starting materials under refluxwhat does it mean to heat under reflux? why do we choose water as the reflux solvent? what are boiling chips used for? why do we put a condenser on top of the reaction? why do we add heat and let the reaction stir for 30 minutes? why do we add sulfuric acid to the reaction after it cools as opposed to when it’s still hot? separation: filtration of precipitatewhy don’t we do an aqueous and organic extraction in the separatory funnel? why do you rinse the salicylic acid on the filter with ice cold water? purification: recrystallization of salicylic acid (no hot filtration needed)what is the difference in the amount of room temperature water vs. boiling water needed to dissolve the salicylic acid (assume a 1.2 gram yield of salicylic acid)? remember, in the lab if you need x ml of boiling water to dissolve a solid, then you should add a little more (definitely no more than 1.5 times the theoretical amount) to ensure it doesn’t recrystallize prematurely. analysis: melting point of salicylic acidwhat can you conclude if the melting point of the salicylic acid you just synthesized is 152-155oc and the 1: 1 mix of your product and “synthetic” salicylic acid is 151-154oc?