Mathematics, 28.02.2020 21:15 rachelsweeney10

Under which conditions does the molar volume of a gas decrease?
O
at 273 K and at 2.0 atm
at 273 K and at 0.5 atm
at 409.5 K and at 1.0 atm
at 546 K and at 2.0 atm

Answers: 3

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Answer from: shealene7

Under 273 K and at 2.0 atm conditions the molar volume of a gas decrease

Step-by-step explanation:

Temperature and gas pressure depends on the volume of a natural gas. Charles's law and Boyle's law respectively are the laws relating to volume with temperature and pressure.

Charles' Law: The law dictates that the amount of gas at intense pressure and moles is directly related to gas temperatures.

Mathematically,

V ∝ T (At constant pressure and number of moles)

The volume of the gas also decreases and vice versa, with the gas temperature increasing.

Boyle's Law: The law dictates that the pressure of the gas becomes inversely proportional to the gas volume and the number of moles at constant temperature.

Mathematically,

P ∝ $\frac{1}{v}$ (At constant temperature and number of moles)

Although the volume declining, gas pressure is rising and vice versa. There must be a minimum and a maximum pressure to reduce the volume. The temperature will then decrease.

Hence, its 273 K and at 2.0 atm.

Answer from: Quest

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

$ab^2+ac^2=bc^2$

$ab^2+ac^2=x^2$ )

triangle abd and cba are similar,

$\frac{ab}{bc}=\frac{bd}{ab}$

$ab^2=bc\cdot bd$

$25=bc\cdot bd$ (2)

triangle cad and cba are similar,

$\frac{ac}{bc}=\frac{cd}{ac}$

$ac^2=bc\cdot dc$

$7\times 7=bc\cdot dc$

$49=bc\cdot dc$ )

using (1), (2) and (3), we get

$25+49=x^2$

$74=x^2$

hence proved.

therefore option 2 is correct.

Answer from: Quest

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

$\begin{bmatrix}1 & 0 & 0& |5 \\ 0& 2& 0& |8\\ 0& 0& 3& |9\end{bmatrix}$

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

$\begin{bmatrix}1 & 0 & 0& |5 \\ 0& 1& 0& |4\\0& 0& 1& |3\end{bmatrix}$

What is the next step in solving this augmented matrix using gauss-jordan elimination method

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Under which conditions does the molar volume of a gas decrease?
O
at 273 K and at 2.0 at...