Chemistry, 21.08.2021 03:00 akdubgirlp7pe1v

Which early chemist worked with gas-phase reactions and was able to describe their behavior mathematically?
a Joseph Priestley
b Robert Boyle
c Antoine Lavoisier
d J. J. Thomson

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a mercury barometer is a device that uses the physical properties of mercury in a tube to measure barometric pressure. mercury barometers are used for : -

1. measurement of atmospheric pressure

2. determining the altitude of a place

3. weather forecasting

4. calibration and checking of aneroid barometers

5. application in fluid mechanics

6. measurement of pressure in aircrafts

7. surface weather analysis

8. preparation of barographs

9. usage in physical sciences like physics, astronomy & chemistry

10. preparation of aircraft altimeters

characteristics of mercury barometer : -

1.used to define and measure atmospheric pressure.

2.on the average at sea level the column of mercury rises to a height of about 760 mm.

3.this quantity is equal to 1 atmosphere.

4.it is also known as standard atmospheric pressure.

5.a barometer in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column, the height of the column varying with atmospheric pressure.

Write 15 uses of a mercury barometer along with its characterestics

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False, as a substance changes from a solid to a liquid and from a liquid to a gas the molecules get farther apart from each other

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Remember that rust prevented by placing a sacrificial electrode in electrical contact with the iron. the sacrificial electrode must be composed of a metal that oxidizes more easily than iron (that is, it must be below iron in table 18.1).

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According to arrhenius theory of acid and bases, an acid is a proton donor, while base donates hydroxyl ions. further, acid and base reacts to form salt and water.consider following example.hcl + h2o → cl- + h3o+here, hcl has donated a proton, hence it is an acid.now consider following reactionhcl + naoh ↔ nacl + h2oin this reaction, hcl donates proton, hence it is acid. on other hand, naoh donates hydroxyl ion (i.e. hence it is a base.

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Which early chemist worked with gas-phase reactions and was able to describe their behavior mathem...

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