Why do you think DNA has had such an impact on forensic science

2 answers:

8 0

Every single person has their own unique DNA so with this, if they find any fingerprints they'll be able to track them down easily

shtirl [24]3 years ago

8 0

I think that this is the answer!

Forensic DNA evidence is rapidly growing vital to ensure the accuracy and being fairly treated in the law enforcement system.
I am not too sure! :(

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The melting point of unknown substance A is 15°C and its boiling point is 95°C. Sketch a

Igoryamba

Answer:

Idk if this is right but i hope it helps... sorry if it's wrong

Explanation:

4 0

3 years ago

A chemist determines by measurements that 0.030 moles of nitrogen gas participate in a chemical reaction. calculate the mass of

zzz [600]

Remember that:
number of moles = mass/molar mass

First, we get the molar mass of the nitrogen gas molecule:
It is known the the nitrogen gas is composed of two nitrogen atoms, each with molar mass 14 gm (from the periodic table)
Therefore, molar mass of nitrogen gas = 14 x 2 = 28 gm

Second we calculate the mass of the precipitate:
we have number of moles = 0.03 moles (given)
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Using the equation mentioned before,
mass = number of moles x molar mass = 0.03 x 28 = 0.84 gm

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3 years ago

I am having some trouble figuring out how to approach the following problem: A 75.0-mL volume of 0.200 M NH3 (Kb=1.8×10−5) is ti

Tanya [424]

<span>We look at the end of the day:

n(HNO3) added = 0.500*17.0/1000 = 0.00850 mol
n(NH3) = 0.200*75.0/1000 - 0.00850 = 0.00650 mol
[NH3] left = 0.00650*1000/(17.0+75.0) = 0.070652
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3 years ago

Provide the organometallic reagent that is needed to perform the transformation shown below. The reagent should be formatted as

Juliette [100K]

The correct answer is $LiCH_{3}CH(CH_{3} )CH_{3}$ .

<h3>Organometallic reagent</h3>

Organometallic chemistry is the study of organometallic compounds, which are substances that contain at least one chemical bond between a carbon atom from an organic molecule and a metal. These substances include alkali, alkaline earth, and transition metals, as well as metalloids like boron, silicon, and selenium. In addition to links to organyl fragments or molecules, bonds to 'inorganic' carbon, such as those to carbon monoxide (metal carbonyls), cyanide, or carbide, are also typically regarded as organometallic. Although they are not strictly speaking organometallic compounds, some similar compounds, such as transition metal hydrides and metal phosphine complexes, are frequently included in discussions of such substances. The phrase "metalorganic compound," which is comparable but different, describes molecules that contain metals but do not have direct metal-carbon bonds but do have organic ligands.

Learn more about organometallic reagent here:

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4 0

2 years ago

Large crystals are made from the slow cooling of magma. <br> a. True<br> b. False

Step2247 [10]

I would have to say the answer is a. True.

5 0

4 years ago

Read 2 more answers