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Answer:

Windows+Down Arrow.

Windows+Up Arrow.

Windows+M

Explanation:

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Answer:

Answer:-

V

(av.)

O

2

=

π×32

8RT

V

(RMS)

N

2

=

28

3RT

V

(RMS)

N

2

V

(av.)

O

2

=

π×32×3

8×28

=

3π

7

=(

3π

7

)

2

1

The ratio of average speed of CO₂ and N₂O is

Average Speed: It is the sum of speed of all the molecules divided by the total number of molecules.

Formula for calculating Average speed of molecules:

                                =  [tex]\sqrt \frac{8RT}{\pi M}[/tex]

                    where, R = Universal Gas Constant

                                 T = Temperature

                                 M = Molecular weight of Gas

Average speed of CO₂ = [tex]\sqrt \frac{8RT}{\444\pi }[/tex]      (molecular weight of CO₂ = 44gm)

Average speed of N₂O = [tex]\sqrt \frac{8RT}{44\pi }[/tex]      (molecular weight of N₂O = 44gm)

By calculating, ratio of average speed of CO₂ and N₂O = 1:1

Therefore, at constant temperature the ratio of average speed of carbon dioxide and nitrous oxide will be 1:1

Answer:

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Answer:

circumference is 66cm

Step-by-step explanation:

As the formula of circumference of a circle is 2pir

where r is the radius of the circle.

here, diameter is given ,ie 2r =21cm

put the values in the formula and use pi=22/7.

Hence, you will get your answer

Answer:

Step-by-step explanation:

Diameter = 2 × r

Diameter = 2 × rcircumference = 2πr

Diameter = 2 × rcircumference = 2πr = π × diameter (2 × r(radius)

Diameter = 2 × rcircumference = 2πr = π × diameter (2 × r(radius)

= 65. 97

21 × 22/7

= 3 × 22

= 66