Answer:
I think it's nitrogen I'm not really sure..
a. 627.1 m/s
b. the rate of effusion of ethane = 1.7 faster than hexane
<h3>Further explanation
</h3>
Given
T = 200 + 273 = 473 K
Required
a. the gas speed
b. The rate of effusion comparison
Solution
a.
Average velocities of gases can be expressed as root-mean-square averages. (V rms)
R = gas constant, T = temperature, Mm = molar mass of the gas particles
From the question
R = 8,314 J / mol K
T = temperature
Mm = molar mass, kg / mol
Molar mass of Ethane = 30 g/mol = 0.03 kg/mol
b. the effusion rates of two gases = the square root of the inverse of their molar masses:
M₁ = molar mass ethane =30
M₂ = molar mass hexane = 86
the rate of effusion of ethane = 1.7 faster than hexane
Answer:
Average atomic mass of potassium based on these relative abundances
Explanation:
The atomic mass of this element will be equal to the sum of product of its three isotopic masses and its fractional abundance
For isotope I -
Mass of Potassium-39 amu
Fractional abundance of Potassium-39 %
Mass of Potassium-40 amu
Fractional abundance of Potassium-40 %
Mass of Potassium-41 amu
Fractional abundance of Potassium-41 %
Average atomic mass of potassium based on these relative abundances
Answer:
true
Explanation:
This sounds like the way an endothermic reaction is going to operate.
It's a very good description of taking on heat which is endothermic.
The statement is true.
1. Water
2. Air and its molecule
3. Your body
and etc!
Hope this helps! Have a great day!