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lubasha [3.4K]
3 years ago
15

If helium does not obey the octet rule, then why do it atomsnot react?

Chemistry
1 answer:
Vikentia [17]3 years ago
6 0

Answer:

The dialysis machine takes the blood in your veins. Then it takes it through a series of tubes which undergoes filtration by use of reverse osmosis. The clean blood is returned to the body.

Explanation:The dialyzer, or filter, has two parts, one for your blood and one for a washing fluid called dialysate. A thin membrane separates these two parts. Blood cells, protein and other important things remain in your blood because they are too big to pass through the membrane. Smaller waste products in the blood, such as urea, creatinine, potassium and extra fluid pass through the membrane and are washed away.

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What do we call the experimental apparatus that William crooks used in his experiments and what did he discover
34kurt

Answer: It is called a Crookes Tube, and he used it to discover cathode rays, which were later determined to be electrons.

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3 years ago
why would dry cleaners use nonpolar tetrachloroethylene, c2cl4, to get cheeseburger grease out of clothes?
Sergeeva-Olga [200]
Grease is nonpolar. It is made up of lengthy hydrocarbon chains attached to glycerol (triacylglycerols). Because of this property, nonpolar solvents, such as tetrachloroethylene, can get grease out of clothes. This solvent acts by dissolving the grease, thereby removing it from clothes without leaving any residue.
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3 years ago
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What does a hygrometer measure?
gogolik [260]

Answer:

  • humidity

Explanation:

Hygrometer, instrument used in meteorological science to measure the humidity, or amount of water vapour in the air. Several major types of hygrometers are used to measure humidity.

3 0
3 years ago
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How many grams do 3.6 x10^20 atoms of silicon weigh?
creativ13 [48]
First, we divide the number of atoms of silicon given in the problem above by Avogadro's number 6.6022 x10^23. This will give us the number of moles of silicon. Then, we multiply the number of moles by the molar mass of silicon. 
number of moles = (3.6 x 10^20 atoms/6.022x10^23 atoms) = 5.97x10^-4 moles
Then, multiplying by the molar mass
                  (5.97x10^-4 moles)(28.0855 g/mol) = 0.017 grams
4 0
3 years ago
It takes a person 35 seconds to swim in a straight line from the east end of a pool to the west end of the pool, a distance of 5
viktelen [127]

Answer:

1.42m/s

Explanation:

velocity=displacement/time

v=50/35=1.42m/s

4 0
3 years ago
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