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igor_vitrenko [27]
3 years ago
13

1.) What current or future forensic science technology/technique do you think will have the greatest impact on solving crimes? W

hy?
2.) Over the last few years, security cameras and other devices have become more common. Some people argue that these measures violate the right to personal privacy. Others argue that they are necessary to reduce crime. What do you think? Why?
Chemistry
1 answer:
olganol [36]3 years ago
3 0
One of the greatest technology advancement that made a huge impact in the field of crime investigation were the Closed Circuit Televisions (CCTV). The camera would just be simply mounted at an establishment wherein it remains to be monitored 24 hours a day, and crime would be simply investigated just by looking at its video feeds.
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Why is it dangerous to react sodium and potassium with dulute sulphuric acid?​
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Because sodium and potassium are very reactive metals so they react explosively with HCL and H2SO4 evolving a large amount of heat.

Explanation:

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If each of you pulls with equal force, the rope will not move (the two forces are equal in strength, but opposite in direction).
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The sum of two integers is -4. Can the two integers both be positive?
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Answer: No.

Explanation: A negative integer can only be made with 2 negative integers or 1 positive and 1 negative integer.

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Which of the following polymers is used in plastic bottles and plastic containers? Select one: a. LDPE b. PVC c. Polystyrene d.
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Answer: Option (d) is the correct answer.

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It is known that polyethene which have high density and these are generally safe plastics which does not transfer any chemicals to food ingredients. In most of the industries, these type of plastics have large application because these can be used to prepare plant pots, plastic woods, furniture etc.

High density polyethene is also known by the short form HDPE.

Whereas low density polyethene (LDPE), PVC, polystyrene and polypropylene are not safe plastics and they tend to harm the environment. So, they are not safe to store or preserve food items.

Thus, we can conclude that out of the given options HDPE polymers is used in plastic bottles and plastic containers.

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