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bearhunter [10]
3 years ago
15

What is the chemical agent mixed with feces to determine if blood is present

Chemistry
2 answers:
77julia77 [94]3 years ago
6 0
Luminol is a chemical when mixed with hydrogen peroxide is sprayed on blood
gogolik [260]3 years ago
4 0
The chemical agent mixed with feces to determine if blood is present is Luminol.
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What happens when nitrogen fills its valence shell?
Sauron [17]
The right answer is D. three electrons are gained, creating N-3

Nitrogen has 5 electrons in it's valence shell and octet rule states that the valence shell must have 8 electrons. To satisfy that, Nitrogen gains 3 electrons that are negatively charged.Therefore, it gets a negative charge.




5 0
3 years ago
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The density of Mg is 1.74g/cm3. The density of strontium is 2.60g/cm3. What would you expect the density of Ca to be?
Tomtit [17]

The density of Ca will be between that of Mg and Sr

Explanation:

Ca, Mg and Sr are group II elements. They are called alkali earth metals. The correct order of the elements in this group are: Be, Mg, Ca, Sr, Ba and Ra.

Density is an intensive property of matter which describes the amount of matter(mass) per volume of a substance.

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  • On the periodic table, atomic mass which the number of protons and neutrons in the nucleus of an atom increases down the group.
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Learn more:

density brainly.com/question/2658982

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I need help answer with right answer
larisa86 [58]

Answer:

I think it would be D

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