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Sergio [31]
3 years ago
7

The hole in the ozone layer can lead to increases in skin cancer. a. True b. False

Chemistry
2 answers:
Reptile [31]3 years ago
8 0

Answer : The correct option is, (a) true

Explanation :

Ozone layer : It is a layer which is present in the stratosphere region. Ozone layer is the layer which absorbs more amount of the ultraviolet rays which is the more harmful rays for us. That means ozone layer protect us from the harmful rays (UV rays). Ultraviolet rays causes the skin cancer. When the ultraviolet rays reaches directly to the earth, it cause many type of diseases.

When the hole in the ozone layer then it can lead to increases in skin cancer.

Hence, the given statement is true.

Likurg_2 [28]3 years ago
6 0
A. True. The ozone layer is very critical to our health.
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Calculate the concentration (M) of sodium ions in a solution made by diluting 50.0 mL of a 0.874 M solution of sodium sulfide to
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Since one mole Na₂S ionised to give 2moles Na⁺ ion, hence concentration of sodium ion in the solution is (2 × 0.1748)M = 0.3496 M

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From the question it is clear that,  

Initial volume of sodium sulphide solution is (v₁) = 50mL

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v₁ × s₁ = v₂ × s₂

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= 50 × 0.874 / 250

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5 0
3 years ago
The compounds below are to be separated by extraction. A student dissolves the compounds in either and then transfers the soluti
gulaghasi [49]

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1) Separate the aqueous layer from the organic layer using the separation funnel.  

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Then we aqueous layer can be <u>treated with HCl</u> in order to obtain the initial A molecule, in other words: Undo the ionic form of compound A.

The organic layer can be removed by <u>distillation</u> in order to obtain the pure form of compound B.

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