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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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Chemistry question. Image attached.
Stells [14]

Answer:

The answer to your question is given below

Explanation:

The balanced equation for the reaction is given below:

CaO(s) + CH4(g) + 2H2O(g) <=> CaCO3(s) + 4H2(g)

1. Writing an expression for the equilibrium constant, K.

The equilibrium constant, K for a reaction is simply the ratio of the concentration of the products raised to their coefficient to the concentration of the reactants raised to their coefficient.

Thus, we can write the equilibrium constant, K for the reaction as follow:

CaO(s) + CH4(g) + 2H2O(g) <=> CaCO3(s) + 4H2(g)

K = [CaCO3] [H2]⁴ / [CaO] [CH4] [H2O]²

2. Based on the value of K, more products will be in the equilibrium mixture since the value of K is a positive large number.

6 0
3 years ago
What is the isotope notation of the element that has an atomic number of 24 and a mass number of 52?
Fofino [41]

Answer:

Chromium

Explanation:

Cr has 24 atomic number and mass number 52

4 0
3 years ago
Calculate the number of atoms in a 3.96 × 103 g sample of silicon.
Crank
Atomic mass Si = 28.0855 u.m.a

28.0855 g -------------------- 6.02x10²³ atoms
3.96x10³ g ------------------- ?? atoms

( 3.96x10³) x 6.02x10²³ / 28.0855 =

8.48x10²⁵ atoms




6 0
3 years ago
The viewing of a solar eclipse involves a specific relationship between the earth, the sun, and the moon. Which of these represe
kirza4 [7]

Answer: B) sun - earth - moon

Explanation:

in the solar system you see them in this order as the sun is in the middle it comes first then earth and shortly after the moon.

7 0
4 years ago
Calculate the mass of water produced when 1.36 g of butane reacts with excess oxygen.
ANTONII [103]

Answer:

Mass of water produced= 1.8 g

Explanation:

Given data:

Mass of water produced = ?

Mass of butane = 1.36 g

Mass of oxygen = excess

Solution:

Chemical equation:

2C₄H₁₀ +13 O₂       →   8CO₂ + 10H₂O

Number of moles of butane:

Number of moles = mass/molar mass

Number of moles = 1.36 g/ 58.12 g/mol

Number of moles = 0.02 mol

Now we will compare the moles of butane with water.

                 C₄H₁₀         :        H₂O

                  2              :           10

                 0.02          :         10/2×0.02 = 0.1 mol

Mass of water produced:

Mass = molar mass × molar mass

Mass = 0.1 mol × 18 g/mol

Mass = 1.8 g

6 0
3 years ago
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