Chemistry, 04.12.2019 09:31 shaylawaldo11

The temperature of a 268 ml sample of gas increases from 151. k to 353. k. what is the final volume of the sample of gas, if the pressure in the container is kept constant?

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Answer from: amanda289

V₂ = 626.52 mL

Explanation:

Given data:

Initial volume = 268 mL

Initial temperature = 151 K

Final temperature = 353 K

Final volume = ?

Solution:

V₁ / T₁ = V₂ / T₂

V₂ = V₁ T₂/ T₁

V₂ = 268 mL× 353 K / 151 K

V₂ = 94604 mL.K / 151 K

V₂ = 626.52 mL

Answer from: Quest

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

Answer from: Quest

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

$^{m}_{4}x$ and $^{m}_4y$

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

$^{m}_{5}x^{-}$

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be $^{9}_{5}be^{-}$ and $^{9}_{4}be$ .

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.

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The temperature of a 268 ml sample of gas increases from 151. k to 353. k. what is the final volume...

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