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Ede4ka [16]
3 years ago
10

Which of the following is an advance in technology that has helped us to increase environmental quality?

Chemistry
1 answer:
meriva3 years ago
3 0
OK, its deff not the last one b/c all that trash just goes into the air, overwater farm land would kill crops (no help there), Ive never heard of heating water to kill excess bacteria. There is ,however, a new technique called Bioremediation which is the use of living organism to clean up a medium i.e. air,soil, water. It would seem the 2nd answer is correct.
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What is the pH of 0.50 M H2S (given that Ka = 8.91 × 10−8)?
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on plato it 3.7... round up!

4 0
4 years ago
in the third period of the periodic table sodium id following by magnesium,siicon, and phosphorus. which of these elements has t
Elenna [48]
Phosphorus has the smallest atomic size
4 0
4 years ago
45 grams of ammonia, NH3, in 0.75 L of solution.
GrogVix [38]
2.3 moles of sodium chloride in 0.45 liters of solution . necessarile correct ... 0.025 L. (1.3 SF). 45 grams of ammonia in 0.75 L of solution. 45g x 1 mol = 2. demol ... anol x 1,50 = 3 mol NaOH x 40,019 = 120g Naolt.
4 0
3 years ago
When magnesium reacts with chlorine, magnesium ions, Mg2+, and chloride ions, Cl−are formed. In this reaction, magnesium atoms A
Slav-nsk [51]

<u>Answer:</u> In the reaction, magnesium atoms lose electrons.

<u>Explanation:</u>

An ionic compound is defined as the compound which is formed when electron gets transferred from one atom to another atom. These are usually formed when a metal reacts with a non-metal or a metal reacts with a polyatomic ion or a reaction between two polyatomic ions takes place.

Magnesium is 12th element of the periodic table having electronic configuration of 1s^22s^22p^63s^2

This element will loose 2 electrons to form Mg^{2+} ion

Chlorine is 17th element of the periodic table having electronic configuration of 1s^22s^22p^63s^23p^5

This element will gain 1 electron to form Cl^- ion

By criss-cross method, the oxidation state of the ions gets exchanged and they form the subscripts of the other ions. This results in the formation of a neutral compound.

The ionic compound formed is MgCl_2

Hence, in the reaction, magnesium atoms lose electrons.

5 0
4 years ago
Which of the following types of molecules always has a dipole moment? Linear molecules with two identical bonds. Trigonal pyrami
natali 33 [55]

Answer:

Trigonal pyramid molecules (three identical bonds)

Explanation:

In trigonal pyramidal molecule  like molecule of ammonia , the vector some of intra- molecular dipole moment is not zero because the bonds are not symmetrically oriented . In other molecules , bonds are symmetrically oriented in space so the vector sum of all the internal dipole moment  vectors cancel each other to make total dipole moment zero.

8 0
3 years ago
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