Stays the same in a closed system
<h2>☆Answer☆</h2>
<em><u>Experts say this isn’t unusual with vaccinations because the estrogen in women’s bodies is designed to elicit a stronger immune response.</u></em>
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<em><u>Happy</u></em><em><u> </u></em><em><u>Learning</u></em><em><u> </u></em><em><u>⭐</u></em>
The molar mass of the gas : 18 x 10⁻³ kg/mol
<h3>Further explanation</h3>
Given
An unknown gas has one third the root mean square speed of H2 at 300 K
Required
the molar mass of the gas
Solution
Average velocities of gases can be expressed as root-mean-square (V rms)
T = temperature, Mm = molar mass of the gas particles , kg/mol
R = gas constant 8,314 J / mol K
v rms An unknown gas = 1/3 v rms H₂
v rms H₂ :
V rms of unknown gas =
Is this astronomy? If it is, Space Station
Answer: C.) Xe
Explanation: To figure out the answer go to the Noble Gas Family and count down 5 elements.