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den301095 [7]
3 years ago
12

Helppp nowww plsss!!!

Chemistry
1 answer:
Bond [772]3 years ago
6 0
Pan 4: theyre the smallest and most broken down :)
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17. Which of the following describes a condition in which an individual would not hear an echo?
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<span>The right answer is D. In a situation where the sound wave reaches the ear and the reflected wave reaches the ear less than 0.1 seconds later, the individual would not be able to hear an echo. There needs to a far more significant delay between the sound and the reflection of said sound reaching the listener's ear for the echo effect to become apparent.</span>
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3 years ago
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Carbon tetrachloride was widely used for many years as a solvent until its harmful properties became well established. Carbon te
MAXImum [283]

Answer:

CH4(g) + Cl2(g) = CCl4(g) + HCl(g)

Explanation:

Carbon tetrachloride is in the form of a colorless gas. It is not flammable and is not soluble in water (poor solubility). It is a compound used as a fire extinguisher and in the manufacture of refrigerants, but is currently discontinued for its toxicity. Exposure causes damage to the liver, kidneys and central nervous system. These effects can happen by breathing it or through skin contact. In the reaction the states of matter of each of the reagents and products are observed

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4 years ago
Determine the number of moles of air present in 1.35 L at 750 torr and 17.0°C.
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Your answers are correct. I love the Universal formula.
8 0
3 years ago
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A He-Ne laser (wavelength λ = 600 nm) shines through a double slit of unknown separation d onto a screen 1.44 m away from the sl
ludmilkaskok [199]

Answer:

1.28 ×10^-4m

Explanation:

Interference is the superimposition of the wavefront. The superimposition causes bright and dark fringes.

The dark fringe is formed when the additional distance traveled is equal to the multiple wavelength integrals.

From the question, the parameters given are; Wavelength of the light,λ= 600nm, Distance of the screen (D) = 1.44m, order of the bright fringe (m) = 4, Distance of the 4 order fringe (y) = 2.7 cm.

Therefore, for the maximum bright fringe;

dy/D=mλ-----------------------------------------------------------------------------------------------------------------------(1)

Therefore, slotting in equation (1);

d×0.027/1.44=4×600×10^-9

d= 1.28×10^-4 m.

7 0
3 years ago
Yo fm on ig chs_luucy. ill give u brainleist .
xz_007 [3.2K]
Alright bet! Say less
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3 years ago
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