It's atomic number is 79 and it's atomic mass is about 196.967
Yes, the atoms in the helium sample have the same average kinetic energy as the atoms in the argon sample.
<h3>What is Average Kinetic Energy ?</h3>
The average kinetic energy of a gas molecule is defined as the product of half of the mass of each gas molecule and the square of the RMS speed.
The average kinetic energy equation is independent of Molar mass.
It's only a function of temperature.
So if they're at the same temperature they will have the same average kinetic energy.
Therefore, the atoms in the helium sample have the same average kinetic energy as the atoms in the argon sample
Learn more about kinetic Energy here ;
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This all depends on lots of independent variables such as force used to roll the ball, wind resistance, etc. With no variables included, they would both move at the same velocity.
I’m not sure what the options are, but something along the lines of, without deforestation, we wouldn’t be able to build cities, or settlements, which would halt our advancements in architecture.
If this doesn’t really help, just show me the options and we’ll figure it out :)
Answer:
Molar mass of vitamin K = 450.56\frac{g}{mol}[/tex]
Explanation:
The freezing point of camphor = 178.4 ⁰C
the Kf of camphor = 37.7°C/m
where : m = molality
the relation between freezing point depression and molality is
Depression in freezing point = Kf X molality
Where
Kf = cryoscopic constant of camphor
molality = moles of solute dissolved per kg of solvent.
putting values
2.69°C = 37.7°C/m X molality
molality = 0.0714 mol /kg
moles of vitamin K = 0.0714X0.025 = 0.00178 mol
we know that moles are related to mass and molar mass of a substance as:
For vitamin K the mass is given = 0.802 grams
therefore molar mass =