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Masteriza [31]
3 years ago
14

What properties would you expect to be different for the two enantiomers of 2-pentanol?

Chemistry
1 answer:
-BARSIC- [3]3 years ago
5 0

Answer: direction of rotation of plane polarized light and reaction with chiral reagents.

Explanation:

Enantiomers are stereoisimers which are mirror images of each other. They possess the same physical and chemical properties except that the direction of rotation of plane polarized light and reaction with chiral reagents. (+)-2-pentanol will rotate plane polarized light to the right and react with dextrorotatory enantiomers of chiral reagents while (-)-2-pentanol will rotate plane polarized light to the left and react with leavorotatory enantiomers of chiral reagents.

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if the density of a bar of gold is 19.3g/cm^3and you cut it into four pieces , what is its density of each piece of gold
AlladinOne [14]
Density is an intrinsic property, so it is independent of the amount of substance present: one gold coin would have the same density as a solid gold boulder.

So if the density of gold is 19.3 g/cm³, the density of a bar of gold and the pieces into which the bar is cut would all be 19.3 g/cm³.
4 0
3 years ago
1. Fill in the blanks. Example: A nitrogen atom takes on a 3- charge when it forms an anion and becomes nitride. a. A magnesium
Tema [17]

Answer: a. +2, cation and magnesium ion .

b. -1,  anion, chloride

c. -2, anion, oxide

d. +1. cation , potassium ion

Explanation:

When an atom accepts an electron negative charge is created on atom and is called as anion.

When atom loses an electron positive charge is created on atom and is called as cation.

Magnesium (Mg) with atomic number of 12 has electronic configuration of 2,8,2 and thus it can lose 2 electrons to form Mg^{2+} cation and becomes magnesium ion.

Chlorine (Cl) with atomic number of 17 has electronic configuration of 2,8,7 and thus it can gain 1 electron to form Cl^{-} anion and becomes chloride.

Oxygen (O) with atomic number of 8 has electronic configuration of 2,6 and thus it can gain 2 electrons to form O^{2-} anion and becomes oxide.

Potassium (K) with atomic number of 19 has electronic configuration of 2,8,8,1 and thus it can lose 1 electron to form K^{+} cation and becomes potassium ion.

3 0
3 years ago
In your own words, explain if you agree or disagree with this statement: "Nuclear energy is the cleanest
GalinKa [24]

Answer:

nuclear energy is the cleanest and safest energy source we have available and i agree with this statement for following reasons:

1.  Nuclear power is generated by a controlled chain reaction involving the splitting of atoms. A modern nuclear power plant uses the intense heat created by this reaction to heat water and create steam, which turns a turbine and generates electricity. Whereas a coal-fired plant heats water by burning coal, a nuclear plant heats it by splitting atoms. This process is called nuclear fission.

2. Nuclear fission, in simple terms, occurs when an atom splits in two, releasing a massive amount of energy and several subatomic particles called neutrons. These neutrons, in turn, hit and split other atoms, beginning and sustaining the chain reaction. Reactor operators control this reaction in a variety of ways and thus regulate the amount of heat generated and energy produced.

3. The raw fuel for this process is the metal uranium, which must be enriched before it can be used for producing energy in commercial reactors. Enrichment is necessary because mined uranium ore is around 99.3 percent uranium-238, which, in today’s commercial power plants, does not readily split upon exposure to neutrons from the fission chain reaction, and thus makes poor fuel. The other 0.7 percent of mined uranium is uranium-235, which makes excellent fuel. The number refers to the atomic mass, or the total mass of protons and neutrons that make up the atomic nucleus. This difference in mass of the same element makes them two different isotopes of uranium. The enrichment process consists essentially of increasing the percentage of uranium-235 by decreasing the percentage (via removal) of uranium-238.

<h3>i hope you find your answer..</h3>

3 0
3 years ago
A reaction produces 0.837 moles of H 2 O . How many molecules of H 2 O are produced?
AleksAgata [21]

Answer:

5.04 * 10^2^3

Explanation:

The original calculation to find the number of moles which is n=\frac{m}{M} can be rearranged to give the equation m=nM. Therefore the amount of molecules can be found by m = 0.837 *6.02*10^2^3 (multiplying by Avogadro's Number)

3 0
3 years ago
Which of the following processes have a ?S &gt; 0?
Ne4ueva [31]

Answer: Cesium chloride dissolves in pure water has \Delta S > 0.

Explanation:

Entropy is the measure of randomness or disorder of a system. If a system moves from  an ordered arrangement to a disordered arrangement, the entropy is said to decrease and vice versa.

\Delta S is positive when randomness increases and \Delta S is negative when randomness decreases.

a) 2HCl(g)\rightarrow H_2(g)+Cl_2(l)

As 2 moles of gas are converting to 1 mole of gas and 1 mole of liquid, the randomness decreases and hence \Delta S is negative.

b) 2NH_3(g)+CO_2(g)\rightarrow NH_2CONH_2(aq)+H_2O(l)

As gas molecules are converting into aqueous and liquid form,  the randomness decreases and hence \Delta S is negative.

c) lithium fluoride forms from its elements: 2Li+F_2\rightarrow 2LiF

As elements are combining to form a compound, the randomness decreases and hence \Delta S is negative.

d) Cesium chloride dissolves in pure water : CaCl_2(s)\rightarrow Ca^{2+}(aq)+2Cl^-(aq)

As compound is dissociating into ions, the randomness increases and hence \Delta S is positive.

3 0
3 years ago
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