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Andreyy89
3 years ago
14

19. Chemical properties can be used to

Chemistry
1 answer:
RoseWind [281]3 years ago
7 0

Answer:differentiate between two compounds i think!

Explanation: taking a test!

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The Henry's law constant (kH) for O2 in water at 20°C is 1.28 × 10−3 mol/(L·atm). (a) How many grams of O2 will dissolve in 4.00
Burka [1]

Answer:

Solubility of O₂(g) in 4L water = 3.42 x 10⁻² grams O₂(g)

Explanation:

Graham's Law => Solubility(S) ∝ Applied Pressure(P) => S =k·P

Given P = 0.209Atm & k = 1.28 x 10⁻³mol/L·Atm

=> S = k·P = (1.28 x 10⁻³ mole/L·Atm)0.209Atm = 2.68 x 10⁻³ mol O₂/L water.

∴Solubility of O₂(g) in 4L water at 0.209Atm = (2.68 x 10⁻³mole O₂(g)/L)(4L)(32 g O₂(g)/mol O₂(g)) = <u>3.45 x 10⁻² grams O₂(g) in 4L water. </u>

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3 years ago
Compare and contrast chemical change and physical change
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Well physical would be if you have Clay and you molded into a new shape or if you put butter on your toes and it melts or water evaporating from the surface of the ocean chemical changes would be milk going sour jewellery tarnishing which means turning into a different color or rust bread putting it in the oven and turning it into toes or rust forming on the nail that is left outside
3 0
4 years ago
In which of the following are the symbol and name for the ion given correctly
Ivenika [448]
I don't see the symbols or the ions. sorry. can you type them out so I can help

3 0
3 years ago
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How are proteins hydrolyzed inside cells? This is for biochemistry
alekssr [168]

Answer:

Explanation:

Protein hydrolysis is carried out by chemical and enzymatic methods. ... Proteolytic enzymes hydrolyze proteins at the optimum temperature and pH and usually target specific peptide cleavage bonds, resulting in digestion consisting of amino acids and peptides of varying size.

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3 years ago
New evidence can cause scientists to revise a scientific theory. If new evidence comes to
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Answer: after years of research if the evidence still supports a change the theory will be revised

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I think that’s it

7 0
3 years ago
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