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Fantom [35]
3 years ago
11

Has encontrado problemas de eutrofización en Xochimilco. Los habitantes del lugar te preguntan cuál es el problema y les dices q

ue:
A) Aumenta la contaminación por bacterias
B)Disminuye el oxígeno del agua
C)Aumentan los anfibios
D)Aumenta el número de peces
Chemistry
1 answer:
Musya8 [376]3 years ago
3 0

Answer: I go search some information

Explanation:I come back with a answer

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You are performing a titration of a triprotic acid, when you spill water on your lab notebook. you can read that: pka 1 = 1.40,
eimsori [14]
According to the PH formula:
PH= Pka +㏒ [strong base/weak acid]
when we have PH at the first equivalence =3.35 and the Pka1 = 1.4
So, by substitution, we can get the value of ㏒[strong base / weak acid]
3.35 = 1.4 + ㏒[strong base/ weak acid]
∴㏒[strong base/weak acid] = 3.35-1.4 = 1.95 
to get the Pka2 we will substitute with the value of ㏒[strong base/ weak acid] and the value of PH of the second equivalence point
∴Pk2 = PH2 - ㏒[strong base/ weak acid]
          = 7.55 - 1.95 = 5.6 
5 0
3 years ago
When chlorine is added to acetylene, 1, 1, 2, 2-tetrachloroethane is formed: 2cl2 (g) + c2h2 (g) → c2h4cl4 (l) how many liters o
Otrada [13]
Answer:
             20 L of Cl₂

Solution:

The reaction is as follow,

                                   H₂C₂  +  2 Cl₂     →      H₂C₂Cl₄

According to equation,

       167.84 g (1 mole) H₂C₂Cl₄ is produced by  =  44.8 L (2 mole) of Cl₂
So,
                 75 g of H₂C₂Cl₄ will be produced by  =  X L of Cl₂

Solving for X,
                      X  =  (44.8 L × 75 g) ÷ 167.84 g

                      X  =  20 L of Cl₂
7 0
4 years ago
3. Explain why an aluminum ion (A13+) is smaller than a sodium ion (Na+).
IceJOKER [234]

Answer:

This question is hard :( I dont know im so sorry

Explanation:

8 0
2 years ago
Baking bread is a chemical change because _____ A.it changes color B.bread cannot be changed back into dough C.new substances ar
yan [13]
I say the answer is D
7 0
3 years ago
How is making an apple pie different from making lead iodide
Nataly_w [17]

Explanation:

An apple pie is a mixture whereas lead iodide is a compound. To processes leading to the formation of a mixture and a compound are completely different.

  • A compound is a substance composed of two or more kinds of atoms that are joined together to form a definite matter.
  • The properties of the compound formed differs from that of the constituent atoms.
  • A mixture on the other hand is made up of indefinite compositions.
  • In the case of the apple pie, the parts are not homogeneous in nature.

To produce lead iodide, chemical reactions must take place between atoms.

In the case of  the pie, chemical and physical changes can take place.

Learn more:

Mixture brainly.com/question/1446244

#learnwithBrainly

4 0
4 years ago
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