Chemistry, 23.10.2019 18:00 vrw28

Asap! choose all that apply. which of the following chemicals are utilized in modern medicine? nacl ba n 2o si c 14h 10o 4 h 2s ca

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Answer from: thederpbro

Ba, N20, C 14H 10O 4

Explanation:

Ba: Calcium atoms in bones absorb x-rays, allowing doctors to clearly see the body's skeleton. X-rays can also be used to see blood vessels and internal organs. Special liquids, such as compounds made with the element barium (Ba), are swallowed by the patient, or injected into the bloodstream. The liquids help absorb x-rays, making certain tissues show up more clearly.

N20: Certain chemicals can be used as an anesthetic. Nitrous oxide (N2O) is commonly used in surgery and dentist offices.

C 14H 10O 4: Many acne medications contain benzoyl peroxide (C14H10O4), a compound that releases oxygen during a chemical reaction with skin. The oxygen kills anaerobic bacteria, which cannot live in the presence of oxygen.

Answer from: Quest

most historians agree that gabriel mouton, the vicar of st. paul’s church in lyons, france, is the “founding father” of the metric system. he proposed a decimal system of measurement in 1670. mouton based it on the length of one minute of arc of a great circle of the earth (now called a nautical mile, 1852 meters). he also proposed the swing-length of a pendulum with a frequency of one beat per second as the unit of length (about 25 cm). a pendulum beating with this length would have been fairly easy to produce, thus facilitating the widespread distribution of uniform standards. over the years, his work was revised, improved, and extended by a number of french scientists.

the political sponsor of weights and measures reform in the french revolutionary national assembly was the bishop of autun, better known as talleyrand. under his auspices, the french academy appointed several committees to carry out the work of developing a usable system of weights and measures for france. one of the committees recommended a decimalized measurement system based upon a length equal to one ten-millionth of the length of a quadrant of the earth’s meridian (i.e., one ten-millionth of the distance between the equator and the north pole).

Answer from: Quest

the answer is 75.0%.

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Asap! choose all that apply. which of the following chemicals are utilized in modern medicine? nac...

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