Answer:
Explanation:
For this we're going to take the help of a concept called Graham's law which says
The rate of diffusion of a gas is inversely proportional to the square root of its molar mass
So
Molecular masses of
N2 : 28 g/mole
He: 4 g/mole
O2: 32 g/mole
Co 2 : 44 g/mole
Therefore the order
He>N2>O2>Co2
Answer:
There are 140.9 grams in 2.393*10²⁴ aotms of Cl.
Explanation:
Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023*10²³ particles per mole. Avogadro's number represents a quantity without an associated physical dimension, so it is considered a pure number that allows describing a physical characteristic without an explicit dimension or unit of expression. Avogadro's number applies to any substance.
Then you can apply the following rule of three: if 6.023*10²³ atoms are contained in 1 mole of the compound, 2.393*10²⁴ atoms are contained in how many moles?
amount of moles= 3.973
If the molar mass of Cl is 35.453 , then the amount of mass that contains 3.973 moles can be calculated as:
3.973 moles*35.453 = 140.85 grams ≅ 140.9 grams
<u><em>There are 140.9 grams in 2.393*10²⁴ aotms of Cl.</em></u>
Answer:
x=2.
Explanation:
Hello there!
In this case, since we have a mole ratio of moles of Cl to moles of Cu as 2.39, it is possible to write the following:
Thus, since the two possible copper chlorides are CuCl and CuCl₂, we can therefore infer that x=2 since it is close but not as close as it should to the whole number 2.
Best regards!
Atomic mass = number of protons + number of neutrons
= 10 + 8 = 18
In short, Your Answer would be Option C
Hope this helps!
A family of organic compounds soluble in organic solvents but not in water is called<span> __________. The lipid </span>family<span> is made up of triglycerides, phospholipids and ___________. About 95% of the lipids in food and in the human body are ___________. __________ is the best known of the sterols.
plz thank me 5 star me </span>