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dlinn [17]
3 years ago
7

A forensic scientist reports that a dead woman had high concentrations of a pain-fighting drug in her blood. What type of analys

is was done? A) the scientist made an association through individualized evidence. B) The scientist made a comparison. C) The scientist made an identification. D) The scientist supplied direct evidence
Chemistry
2 answers:
zepelin [54]3 years ago
7 0

Answer: C). The scientist made an identification.

Explanation:

Forensic science deals with the searching, identification, collection and analysis of the evidences found at the crime scene or those which are related to the crime.

In an analysis of evidences the identification, quantification, and comparison of the evidences obtained from the crime scene with those which are requested from the suspects or victims takes place.

In the given situation, the scientist will identify the concentration of drug in the blood after the process of analysis of the blood.

AlladinOne [14]3 years ago
3 0
C) the scientist made an identification by identifying the amount of drug in her blood and realising it was high
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What happens to gas particles when a gas is compressed?
Dmitrij [34]
The volume decreases
7 0
3 years ago
According to Chargaff's Rule, if a segment of DNA contains 60 cytosine bases out of a total of 300 bases how many thymine bases
bija089 [108]

Answer:

90 Thymine bases

Explanation:

Chargaff's rules states that in the DNA of any organism, the amount of purine and pyrimidine bases must be in a 1:1 ratio. This means that the amount of Adenine and Guanine bases (purines) should be equal with their complementary pairs of Thymine and Cytosine bases respectively (pyrimidines). (A = T) + (G = C) = 100

Hence, according to this question, if there are 60 cytosine bases, this means that there will be 60 Guanine bases. 60 C + 60 G = 120 pyrimidines

300 total bases - 120 pyrimidine bases = 180 purine bases.

180/2 = 90 equal bases of Adenine and Thymine. Hence, Thymine bases will be 90.

3 0
3 years ago
A 64.4-g sample of potassium chloride was added to 200.0 g of water at 20 degrees C. Is the solution saturated, unsaturated, or
Tomtit [17]
Hey there!:

is the solution <span>saturated  , ie :

</span>They are the ones that have reached the exact solubility coefficient.<span>If we mix 64.4 g of KCl at 200.0 g of water at 20 º C, we'll see that the 32.2 g will dissolve and the remainder (32.2 g) will precipitate, forming the bottom body. In this case we will then have a solution saturated with background. However, if we want only the saturated solution, simply perform a simple filtration to separate the precipitate from the saturated solution.

hope this helps!</span>
7 0
4 years ago
Tim wants to store 0.122 moles of helium gas at 203 kPa and 401 K. Which is the volume of the helium gas needed for storage?
algol13

 The  volume  of Helium gas needed for storage  is 2.00 L (answer C)


 <u><em> calculation</em></u>

 The volume of Helium is calculated using ideal gas equation

That is Pv =nRT

where;

 P( pressure) = 203 KPa

V(volume)=?

n(number  of moles) =  0.122 moles

R(gas constant) = 8.314  L.Kpa/mol.K

T(temperature)= 401 K

make V the  subject of the formula  by diving both side  by P

V=nRT/p

V={[0.122  moles x 8.314 L. KPa/mol.K  x 401 K]  / 203 KPa} = 2.00 L


3 0
3 years ago
What is the charge on an ion that contains 16 protons and 18 electrons?
Alika [10]
16-18= -2 so it has a negative charge. Just subtract the electrons from the protons if you get a positive number it will have a positive charge and vice versa.

6 0
3 years ago
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