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kkurt [141]
3 years ago
5

A crime scene investigator is called in to evaluate a crime scene. The victim is lying on the floor with no apparent trauma. Wha

t pieces of physical evidence found at the crime scene would be MOST relevant in this case?
A) clothing of the victim
B) call records of the victim
C) empty pill bottles next to the body
D) hair collected from victim's shower
Chemistry
2 answers:
kodGreya [7K]3 years ago
5 0
C the empty pills, because they can be linked back to see if death was a side effect.
kodGreya [7K]3 years ago
4 0

Answer: C) empty pill bottles next to the body.

Explanation:

A crime scene is a place where potential evidences related to crime can be found.

According to the given situation, an empty pill bottles next to the body is the most relevant option because on chemical examination of pills in a forensic lab the composition of the drug can be identified. The symptoms related to it can be determined, which can be linked with condition of the victim.

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Answer:

D: dark cloud

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What is the definition of specific heat? O A. The heat required to break the molecular bonds within a substance B. The total amo
snow_tiger [21]

Answer:

C

Explanation:

C .       specific heat =    J / gm-C

               

7 0
2 years ago
An alpha particle has a mass number of 2. <br> a. True<br> b. False
Sphinxa [80]
B. False. An alpha particle is a Helium nucleus which has a mass of 4 as it is made from 2 neutrons and protons each with mass of +1.
5 0
3 years ago
Given the wavelength of the corresponding emission line, calculate the equivalent radiated energy from n = 4 to n = 2 in both jo
lions [1.4K]

Explanation:

It is given that,

Initial orbit of electrons, n_i=4

Final orbit of electrons, n_f=2

We need to find energy, wavelength and frequency of the wave.

When atom make transition from one orbit to another, the energy of wave is given by :

E=-13.6(\dfrac{1}{n_f^2}-\dfrac{1}{n_i^2})

Putting all the values we get :

E=-13.6(\dfrac{1}{(4)^2}-\dfrac{1}{(2)^2})\\\\E=2.55\ eV

We know that : 1\ eV=1.6\times 10^{-19}\ J

So,

E=2.55\times 1.6\times 10^{-19}\\\\E=4.08\times 10^{-19}\ J

Energy of wave in terms of frequency is given by :

E=hf

f=\dfrac{E}{h}\\\\f=\dfrac{4.08\times 10^{-19}}{6.63\times 10^{-34}}\\\\f=6.14\times 10^{14}\ Hz

Also, c=f\lambda

\lambda is wavelength

So,

\lambda=\dfrac{c}{f}\\\\\lambda=\dfrac{3\times 10^8}{6.14\times 10^{14}}\\\\\lambda=4.88\times 10^{-7}\ m\\\\\lambda=488\ nm

Hence, this is the required solution.

4 0
3 years ago
Use the following information to answer Q1-Q3
Tju [1.3M]

Answer:

Likely the reason behind carrying them in liquid for is to condense them. liquid takes up far less space than gases do and will last far longer. they can be transformed back into gases through heating them back up. To keep them solid would require frigid temperatures but liquid will transfer more easily through space.

4 0
3 years ago
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