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Stella [2.4K]
3 years ago
11

What does unsaturated zone mean?

Chemistry
2 answers:
Nadya [2.5K]3 years ago
6 0
The unsaturated zone is the portion of the subsurface above the groundwater table. The soil and rock in this zone contains air as well as water in its pores. ... Unlike the aquifers of the saturated zone below, the unsaturated zone is not a source of readily available water for human consumption
sweet-ann [11.9K]3 years ago
3 0
The unsaturated zone is the area above the water table that carries no water
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Construct a three-step synthesis of trans-2-pentene from acetylene by dragging the appropriate formulas into the bins. Note that
adelina 88 [10]

Answer:

The three-step synthesis of trans-2-pentene from acetylene is as follows.

<u>Step -1:</u> Formation of higher order terminal alkyne on reaction with sodium acetylides with haloalkanes.

<u>Step -2:</u> Formation terminal alkyne to nonterminal alkynes.

<u>Step -3:</u> Formation of trans-pent - 2-pent-ene by reduction.

Explanation:

Synthesis of trans-pent-2-yne from ethyne takes place is mainly a three step synthesis which involves formation of higher order terminal alkyne on reaction with sodium acetylides with haloalkane. Second step involves the further alkylation of terminal alkynes to higher order nonterminal alkynes and the third step involves the formation of trans-2-ene by dissolving reduction method.

The chemical reaction of each step of chemical reactions is as follows.

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3 years ago
What part of the geocentric model was incorporated in the heliocentric model?
boyakko [2]
C. A central body is the center of the universe.
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Elements that can be described by the hardness shininess and ductility
Eddi Din [679]
Metals. Titanium is very hard, gold is shiny, and copper is ductile(can be pulled into a wire without breaking). <span />
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3 years ago
What is the mass of 1.71 ✕ 1023 molecules of h2so4?
Anuta_ua [19.1K]
The equation for calculating a mass is as follows:

m=n×M

Molar mass (M) we can determine from Ar that can read in a periodical table, and a number of moles we can calculate from the available date for N:

n(H2SO4)=N/NA

n(H2SO4)= 1.7×10²³ / 6 × 10²³

n(H2SO4)= 0.3 mole

Now we can calculate a mass of H2SO4:

m(H2SO4) = n×M = 0.3 × 98 = 27.8 g



7 0
3 years ago
Which of the following explains how Hahn, Strassman, and Meitner tried to
attashe74 [19]

Answer is: A. They opposed the use of energy released during nuclear fission for military purposes.

Hahn, Strassmann and Meitner were not engaged in nuclear weapons research during World War II.

Otto Hahn (1879 - 1968) became a passionate campaigner against the use of nuclear energy as a weapon.

Hahn and Strassmann discovered nuclear fission (nuclear fission of uranium in 1939).

5 0
3 years ago
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