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Y_Kistochka [10]
4 years ago
10

Which of the following is the BEST description of our atmosphere?

Chemistry
1 answer:
tensa zangetsu [6.8K]4 years ago
4 0

Answer:

I think the answer is B.

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A 1,900-m3 water tower has been cleaned with a chlorine solution. The vapors of chlorine in the tower exceed allowable concentra
yaroslaw [1]

Answer:

t = 1862 s

Explanation:

To do this, we need first to determine the theorical detention time, which can be determined with the following expression:

t₀ = ∀/Q  (1)

Where:

t₀: detention time

∀: Volume of the fluid in the reactor

Q: Flow rate in the reactor

With this time, we must use the following expression to determine the time that the workers will take to vent the tank:

C = C₀ e^(-t/t₀)   (2)

From here, we must solve for time t, and the expression will be:

t = ln(C₀/C) * t₀   (3)

Now that we know the expression to use, let's solve for t. Using (1) to determine the detention time, ∀ is 1900 m³, and Q is 2.35 m³/s so:

t₀ = 1900 / 2.35 = 808.51 s

Now, let's solve for the time t. C will be 0.0015 mg/L (or 1.5 mg/m³ cause in 1 m³ we have 1000 L) and C₀ 15 mg/m³:

t = ln(15/1.5) * 808.51

<h2>t = 1861.66 s or simply 1862 s</h2><h2></h2>

Hope this helps

6 0
3 years ago
What type of chemical bonding would exist between H-C-H?
Svetlanka [38]

Answer:

covalent bond

Explanation:

6 0
3 years ago
How can I identify a salt compound is acidic,basic,neutral​
Luden [163]

Salts that are from strong bases and strong acids do not hydrolyze. Salts that are from strong bases and weak acids do hydrolyze, which gives it a pH greater than 7.  Salts of weak bases and strong acids do hydrolyze, which gives it a pH less than 7.

7 0
3 years ago
If 2 grams of element X combine with 4 grams of element Y to form compound XY, how many grams of element Y would combine with 21
zimovet [89]
I think it is 42 grams of element y
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4 years ago
Convert into mole.
NISA [10]
A: 7.224 x 10^24
B: 1.204 x 10^25
C: 1.3244 x 10^25
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3 years ago
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