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mixer [17]
3 years ago
9

When biological samples of unknown origins are discovered at a crime scene, what should investigators do?a. assume no pathogens

are present and treat the samples accordinglyb. allow only trained hazardous material teams to handle the evidencec. package the samples in plastic bagsd. assume pathogens are present and treat the samples accordingly
Chemistry
1 answer:
adoni [48]3 years ago
3 0

Answer: assume pathogens are present and treat the samples accordingly

Explanation:

When investigators are unable to conclusively ascertain the source of a biological sample found at a crime scene, the correct thing to do is to treat it as if pathogens are present in it and handle it according to set rules on how to handle pathogens.

This is done to ensure that if a pathogen is indeed present, it would not cause a health emergency by infecting those who come in contact with the samples at the scene.

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Partial charges will exist on each atom when a bond exists between two atoms with different electronegativities. Since the atom
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Answer:

negative, positive, increase

Explanation:

From the given question,  

During the formation of bond, between two atoms with difference between their electronegativity-

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And,

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  • The more the difference between the electronegativity of the atoms, the more would be the magnitude of partial charge.
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An electron that is in the highest energy level of an atom and determines the atom's chemical properties is called a(n)
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What is the molarity of a 17.0% by mass solution of sodium acetate, NaC2H3O2 (82.0 g/mol), in water? The density of the solution
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Answer:

[NaCH₃COO] = 2.26M

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17% by mass is a sort of concentration. Gives the information about grams of solute in 100 g of solution. (In this case, 17 g of NaCH₃COO)

Let's determine the volume of solution, by density

Mass of solution / Volume of solution = Solution density

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100 g / 1.09 g/mL = 91.7 mL

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91.7 mL / 1000 = 0.0917L

17 g / 82 g/m = 0.207 moles

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(b)    When water is above the dam then it only has potential energy but when the water falls over the dam then it has higher kinetic energy.

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