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Andre45 [30]
3 years ago
13

Water that is returned to the environment after secondary treatment is known as

Chemistry
2 answers:
jarptica [38.1K]3 years ago
6 0
Water that is returned to the environment after secondary treatment is known as effluent
Nitella [24]3 years ago
6 0
<span>If you are talking about waterwaste management => Water that is returned to the environment after secondary treatment is known as</span> secondary-treated wastewater

but if not the answer is <u>effluent</u>
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The intersection angle of a 3 degree curve is 45.2 degrees. What is the length of the curve? of Select one: O a. 455 m O b.573 m
ValentinkaMS [17]

Explanation:

Relation between length of a curve and angle is as follows.

               l = R \times \Theta

where,   R = radius of curve

         \Theta = angle in radians

Also,     l = R \times \Theta \times \frac{\pi}{180}  .......... (1)

If curve has a degree of curvature D_{a} for standard length s, then

               R = \frac{s}{D_{a}} \times \frac{180}{\pi}   ........... (2)

Now, substitute the value of R from equation (2) into equation (1) as follows.

               l = \frac{s \times \Theta}{D_{a}}  

If s = 30 m, then calculate the value of l as follows.

                 l = \frac{s \times \Theta}{D_{a}}  

                   = 30 \times \frac{45.2}{3}              

                   = 452 m

thus, we can conclude that the length of the curve is 452 m.

7 0
2 years ago
In general, what makes one kind of amino acid different from other amino acids?
Vinvika [58]
There is part of an amino acid molecule that is called the R group or side chain.  The side chain of the amino acid called glycine is a single hydrogen atom. The side chain is what differs from amino acid to amino acid.
5 0
3 years ago
Sodium metal reacts with chlorine gas in a combination reaction. Write a balanced equation to describe this reaction. Click in t
umka2103 [35]

Answer:

Na + Cl ⇒ NaCl

Explanation:

Skeleton equation: Na + Cl ⇒ NaCl

This is already balanced so that is the answer.

6 0
2 years ago
Why is smoke filling up a room diffusion or not diffusion
miv72 [106K]
It is diffistion because it moves from an area of high concentration to low
8 0
3 years ago
How many atoms are in 578g Na
borishaifa [10]

1.51 x 10²⁵atoms

Explanation:

Given parameters:

Mass of Na = 578g

Unknown:

Number of atoms = ?

Solution:

 To find the number of atoms, we must first find the number of moles the given mass contains.

  Number of moles  = \frac{mass}{molar mass}

   molar mass of Na = 23g

 Number of moles =  \frac{578}{23} =  25.13moles

   1 mole of a substance = 6.02 x 10²³atoms

    25.13 mole of Na = 25.13 x  6.02 x 10²³atoms

 This gives  1.51 x 10²⁵atoms of Na

Learn more:

Avogadro's constant brainly.com/question/2746374

#learnwithBrainly

5 0
3 years ago
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