Which of the following gases will have the highest velocity at a given temperature?

2 answers:

8 0

The velocity of the gas is inversely proportional to the square root of the molar mass of the gass. Heavier molecules tend to travel slow compared to light molecules. Among these, He has the lowest molar mass of 4 g/mol hence this element has the greatest velocity among all molecules given.

AURORKA [14]3 years ago

6 0

Answer:

C. He

Explanation:

The velocity of a gas can be calculated by the equation:

$v = \sqrt{\frac{3RT}{M} }$

Where R is the gas constant, T is the temperature, and M the molar mass of the gas.

At a given temperature, the velocity is inversely proportional to the square of the molar mass, so as low is the molar mass, as higher is the velocity. The molar masses are:

Ne = 10 g/mol

O₂ = 2*16 = 32 g/mol

He = 4 g/mol

Cl₂ = 2*35.5 = 71 g/mol

Then, He has the lower molar mass and the highest velocity.

You might be interested in

ILL GIVE BRIANLY, FOLLOW , 5 STARS AND HEARTS

V125BC [204]

Answer:

it can help heat or cool a room.

Explanation:

I think this is right...

7 0

2 years ago

On a planet where the temperature is so high, the ground state of an electron in the hydrogen atom is n = 4. What is the ratio o

kvv77 [185]

Answer:

1:16

Explanation:

The ground state of an electron on the planet is n = 4 compared the ground state of an electron at n =1. For a hydrogen atom, the electron energy level is given as:

$E(n)=\frac{13.6}{n^2}\\ \\Where\ n\ is\ the\ ionization \ energy$

$E(4)=\frac{13.6}{4^2}=\frac{13.6}{16}\\ \\E(1)=\frac{13.6}{1^2}=\frac{13.6}{1}\\ \\The\ ratio\ of\ their\ ionization\ energy=\frac{E(4)}{E(1)} =\frac{\frac{13.6}{16} }{\frac{13.6}{1} } =\frac{1}{16}=1:16$