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aliya0001 [1]
1 year ago
14

C. By examining the physical and chemical properties of evidence at a crime scene, investigators can

Chemistry
1 answer:
OLEGan [10]1 year ago
3 0

Answer:

Physical and chemical properties of evidence can pinpoint the cause of unalive, or can identify the unaliver!

Explanation:

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What element is 1s2 2s22p6 3s23p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f10
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Bi (Bismuth)
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3 years ago
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HELP 20 POINTS <br>A photon has a wavelength of 366 nm. What is the frequency of this photon?​
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Answer:

9.  8.2x10¹⁴ Hz

Explanation:

Wavelength λ = 366 nm

Formula: Frequency = C / λ

To find the wavelength in m,

1 nm = 1.0x10⁻⁹ m

So, 366 nm = ?

= 3.66x10⁻⁷ m

Frequency = 3.0x10⁸m.s-1 / 3.66x10⁻⁷ m

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3 years ago
Where is liquid waste held?
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The answer is in the bladder.
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Which statements describe Earth's continents? Check all that apply.
kari74 [83]

Answer:

A continent is a large distinct landmass.

There are seven continents on Earth.

Continents cover two-thirds of Earth’s surface.

Explanation:

8 0
3 years ago
Question 7-Which of the following is not an acid-base neutralization reaction?
docker41 [41]

Answer:- It is choice D. H_2SO_4+2NaCl\rightarrow 2HCl+Na_2SO_4

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in first reaction the reaction is taking place between ammonia(a base) and hydrochloric acid(an acid) to form their salt(ammonium chloride). So, it is an acid-base neutralization reaction.

In second reaction, sodium hydroxide(a base) is reacting with acetic acid(an acid) to form their salt(sodium acetate) and water. So, it is an acid-base neutralization reaction.

In third reaction, Nitric acid is reacting with calcium hydroxide(a base) to form a salt(calcium nitrate) and water. So, it is an acid-base neutralization reaction.

In fourth reaction, sulfuruc acid is reacting a sodium chloride(a salt) to give a double replacement reaction. It is not an acid-base neutralization reaction as it's not taking place between an acid and base.

So, the correct choice is D. H_2SO_4+2NaCl\rightarrow 2HCl+Na_2SO_4

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3 years ago
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