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never [62]
2 years ago
8

What is one of the BEST practices officers should use when securing a crime scene?

Chemistry
1 answer:
notsponge [240]2 years ago
7 0

Answer:

The best practices officers should use when securing a crime scene is option D

D. They should secure a larger area than the actual crime scene

Explanation:

Officers should secure the scene by limiting access to the scene and movement within the scene

Three layers of secure perimeter should be used by officers to secure a crime scene, with the smallest inside perimeter being the actual crime scene

Next to the crime scene, is an inner perimeter which is the designated meeting point/command post

The outer perimeter, which is the third outer layer is to keep onlookers, passerby, and nonessential personnel at safety and out of the actual crime scene.

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Name the element described in each of the following:
borishaifa [10]

Alkaline earth metal whose cation isoelectric with Kr is strontium (Sr).

What is Alkaline earth metal?

Six chemical elements from group 2 of the periodic chart make up the alkaline earth metals. They are boron (R), barium (Ba), calcium (Ca), strontium (Sr), magnesium (Mg), beryllium (Be), and radium (Ra). The elements share many characteristics, including being glossy, silvery-white, moderately reactive metals at standard pressure and temperature.

They share a full outer s-orbital structurally, meaning that this orbital includes all two of its electrons, which the alkaline earth metals rapidly lose to form cations with a charge of +2 and an oxidation state of +2.

All of the identified alkaline earth metals are found in nature, albeit radium is not a primordial element but only appears as part of the decay chain of uranium and thorium.

The chemical element strontium has the atomic number 38 and the symbol Sr. Strontium is a soft, silver-white, yellowish metallic element that is an alkaline earth metal and has a strong reactivity to chemicals. When the metal is exposed to air, a thick layer of dark oxide forms. Similar to its two vertical neighbors in the periodic table, barium and calcium, strontium exhibits physical and chemical characteristics. It is mostly obtained from the minerals celestine and strontianite, where it is found naturally.

To learn more about Strontium  click on the link below:

brainly.com/question/19904990

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8 0
2 years ago
The medium for ocean waves
stepladder [879]
This is a tough one but the answer is water

think of it this way the ocean is water
7 0
3 years ago
Which is a physical change of iodine?
Aleks [24]
Hey there,


Here are some lists of physical changes of iodine:

- Color  (Color is usually violet-black)
- Odor (Quite a strong, unpleasant smell)
- Density (It is heavy)
- Appearance (shiny)





Hope this helps.
4 0
3 years ago
When concentrated <img src="https://tex.z-dn.net/?f=CaCl_%7B2%7D%28aq%29" id="TexFormula1" title="CaCl_{2}(aq)" alt="CaCl_{2}(aq
DedPeter [7]
Molecular equation: 

<span>Na2CO3 (aq) + CaCl2 (aq) → CaCO3 (s) + 2 NaCl (aq) </span>


<span>Ionic equation: </span>

<span>2 Na⁺ (aq) + CO3²⁻ (aq) + Ca²⁺ (aq) + 2 Cl⁻ (aq) → CaCO3 (s) + 2 Na⁺ (aq) + 2 Cl⁻ (aq) </span>


<span>Net ionic equation: </span>

<span>CO3²⁻ (aq) + Ca²⁺ (aq) → CaCO3 (s)</span>
8 0
3 years ago
Please help!!
Phantasy [73]
1.
cost in cents

cost = 5m



2.
miles = c + 2
7 0
3 years ago
Read 2 more answers
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