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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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How many joules of energy would it take to raise the temperature of 2.5 grams of magnesium metal from
garik1379 [7]

Answer:

Q = 63.75J

Explanation:

Mass = 2.5g

Initial temperature (T1) = 25°C

Final temperature (T2) = 50°C

Specific heat capacity of Mg = 1.020J/g°C

Heat energy = ?

Heat Energy (Q) = mc∇T

Q = heat energy

M = mass of substance

C = specific heat capacity of substance

∇T = change in temperature = T2 - T1

Q = mc∇T

Q = mc(T2 - T1)

Q = 2.5 × 1.020 × (50 - 25)

Q = 2.55 × 25

Q = 63.75J

The heat energy required to raise magnesium metal from 25°C to 50°C is 63.75J

4 0
3 years ago
What is the best name for the following compound? CCl4
Nitella [24]

Answer:

The answer is b. Carbon Tetrachloride

Explanation:

Let's discard the other options:

a. It couldn't be carbon chloride because there are four (4) chloride ions in the molecular formula. The molecular formula for the carbon chloride must be CCI. So, this answer is wrong

c. It could be monocarbon tetrachloride because there are 4 chloride ions and 1 carbon ion, but it's not necessary to use the prefix "mono" because there is just one carbon ion in the formula. In that way, when we mention carbon in the name, there is implicit that there is just one carbon atom in the formula. So, this answer could be ok, but isn't the best.

d. It couldn't be calcium chloride because there isn't any calcium ion or atom in the formula. The molecular formula for the calcium chloride must be CaCI. So, this answer is wrong

6 0
4 years ago
A tank containing methanol has walls 2.50 cm thick made of glass of refractive index 1.550. Light from the outside air strikes t
anyanavicka [17]

18.6

use snells law for glass n=sini/sinr

the value of angle of refraction in glass becomes value of angle of incidence in the glass methanol interface

use snells law again to get the angle light makes with methanol.

4 0
3 years ago
chemical formula of a substance tells us everything below except A. The state of substance B. The quantity of the substance C. T
forsale [732]
A because it is the only one that a formula doesnt tell

4 0
3 years ago
Read 2 more answers
How much would the freezing point of water decrease if 4 mol of sugar were added to 1kg of water?
andreyandreev [35.5K]

Answer:

7.44 C is the answer of the question.

Explanation:

8 0
3 years ago
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