1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ANEK [815]
3 years ago
15

A city continuously disposes of effluent from a wastewater treatment plant into a river. The minimum flow in the river is 130 m3

/s, and the discharge from the treatment plant is 37 m3/s. Upstream from the outfall, the background concentration is 0.69 mg/L. The maximum allowable concentration in the river is 1.1 mg/L. What is the maximum concentration that of the pollutant (in mg/L) that can be safely discharged from the wastewater treatment plant
Chemistry
1 answer:
Vera_Pavlovna [14]3 years ago
6 0

Answer:

2.54\ \text{mg/L}

Explanation:

C = Allowable concentration = 1.1 mg/L

Q_1 = Flow rate of river = 130\ \text{m}^/\text{s}

Q_2 = Discharge from plant = 37\ \text{m}^3/\text{s}

C_1 = Background concentration = 0.69 mg/L

C_2 = Maximum concentration that of the pollutant

The concentration of the mixture will be

C=\dfrac{Q_1C_1+Q_2C_2}{Q_1+Q_2}\\\Rightarrow C_2=\dfrac{C(Q_1+Q_2)-Q_1C_1}{Q_2}\\\Rightarrow C_2=\dfrac{1.1(130+37)-130\times 0.69}{37}\\\Rightarrow C_2=2.54\ \text{mg/L}

The maximum concentration that of the pollutant (in mg/L) that can be safely discharged from the wastewater treatment plant is 2.54\ \text{mg/L}.

You might be interested in
6. How many planets are in the solar system?​
Lyrx [107]

Answer:

8

Explanation:

Rocky planets:

Mercury

Venus

Earth (We are here)

Mars

Gas giants:

Jupiter

Saturn

Uranus

Neptune

5 0
3 years ago
What is medical chwmistry?
9966 [12]

Answer:

Medicinal chemistry involves the creation and refinement of molecules for the purpose of creating or improving drugs.

4 0
3 years ago
9.69×10^25 formula units of iron(III) nitrate is equal to how many moles of Fe(NO3)3?
scoray [572]

Answer:

160.9 mol ≅ 161.0 mol.

Explanation:

  • It is known that every 1.0 mole of compound or element contains Avogadro's number (6.022 x 10²³) of molecules or atoms (formula units).

Using cross multiplication:

1.0 mole of Fe(NO₃)₃ contains → 6.022 x 10²³ formula units.

??? mole of Fe(NO₃)₃ contains → 9.69 x 10²⁵ formula units.

<em>∴ The no. of moles of He contains (9.69 x 10²⁵ formula units)</em> = (1.0 mol)(9.69 x 10²⁵ formula units.)/(6.022 x 10²³ formula units) = <em>160.9 mol ≅ 161.0 mol.</em>

6 0
3 years ago
Which of the following is CORRECT about a 0.10 M solution of a weak acid, HX? *
Diano4ka-milaya [45]

Answer:

The answer is C

Explanation:

Because i know look at my grade.

7 0
2 years ago
Which of the following statements are true? Select all that apply.
Luda [366]

Answer: number one makes the most sense to me let me know if it’s right!

Explanation:

4 0
2 years ago
Other questions:
  • Consider the equation: 4AI+30² → 2AI²O³ Is this equation balanced? Why or why not?
    15·1 answer
  • Hi can you slove this please. ..​
    15·1 answer
  • Anabelle has noticed that her strawberry plants haven't produced any strawberries yet this year.
    15·1 answer
  • Which of the following is a carboxylic acid?
    6·2 answers
  • What is the mass in grams of 2.30 x10^23 molecules of Fluorine
    14·1 answer
  • What happens during a chemical change??
    5·2 answers
  • How many total elements are in marble?
    15·1 answer
  • Two copper pennies has a mass of 6.64g how many moles of copper do they contain<br>​
    9·1 answer
  • 3. How many moles of silver is 8.46x1024 atoms of<br> silver?
    15·1 answer
  • Is snails growing shell conserve mass
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!