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masya89 [10]
3 years ago
8

Volume is a measurement of how fast particles of a substance are moving. true or false.

Chemistry
2 answers:
lara [203]3 years ago
7 0

Answer:  The answer is False.

Explanation:  Volume is defined as the whole space covered or occupied by the object.

It has an SI unit of meter cube (m3).

Thus kinetic energy is the measurement of how fast particles of a substance are moving.

uysha [10]3 years ago
5 0
That is false, volume is the amount of space that a substance or object occupies
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Alenkinab [10]

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4 0
3 years ago
Suppose a 500.mL flask is filled with 1.9mol of NO3 and 1.6mol of NO. The following reaction becomes possible: NO3gNOg 2NO2g The
never [62]

There is an error in the first sentence of the  question; the right format is:

Suppose a 500.mL flask is filled with 1.9mol of NO3 and 1.6mol of NO2.

It should be NO2 and not NO.

Answer:

The equilibrium molarity of NO = 0.21695 m

Explanation:

Given that :

the volume = 500 mL = 0.500 m

number of moles of NO_3 = 1.9 \ mol

number of moles of NO_2 = 1.6 \ mol

Then we can calculate for their respectively concentrations as :

[NO_3] = \frac{number \ of \ moles}{volume}

[NO_3] = \frac{1.9}{0.500}

[NO_3] = 3.8 \ M

[NO_2] = \frac{number \ of \ moles}{volume}

[NO_2] = \frac{}{} \frac{1.6}{0.500}

[NO_2] = 3.2 \ M

The chemical reaction can be written as:

NO_3_{(g)} + NO_{(g)} \to 2NO_2_{(g)}

The ICE table is as follows;

                    NO_3_{(g)} + NO_{(g)} \to 2NO_2_{(g)}

Initial              3.8         -               3.2

Change          +x          x               -2x

Equilibrium     3.8+x    +x              3.2 - 2x

K_c=\frac{[NO_2]^2}{[NO_3][NO]}

where \ K_c = 8.33

8.33 = \frac{(3.2-2x)^2}{(3.8+2x)x} \\ \\ 8.33 = \frac{(3.2-2x)^2}{(3.8x+2x^2)}

8.33(3.8x + 2x^2) = (3.2-2x)^2 \\ \\ 31.654x + 16.66x^2 = (3.2-2x)(3.2-2x) \\ \\ 31.654x + 16.66x^2 = 10.24 - 12.8x +4x^2 \\ \\ 10.24 - 44.454x -12.66 x^2 = 0 \\ \\ 12.66x^2 +44.454x -10.24 = 0

Using quadratic formula;

\frac{-b\pm \sqrt{(b)^2-4ac} }{2a}

= \frac{-(44.454) + \sqrt{(44.454)^2-4(12.66)(-10.24)} }{2(12.66)} \ \ OR \ \ \frac{-(44.454) - \sqrt{(44.454)^2-4(12.66)(-10.24)} }{2(12.66)}

= 0.21695 OR -3.7283

Going by the positive value;

x = 0.21695

[NO_3] = 3.8 +x  = 3.8 + 0.21695

= 4.01695 m

[NO] = x  = 0.21695 m

[NO_2] = 3.2 +x  = 3.2 + 0.21695

= 3.41695 m

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Answer:

b

Explanation:

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What is the mass number of an isotope
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