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Chemistry : asked on jaici68
 01.03.2021

Isooctane is the common name of the isomer of c8h18 used as the standard of 100 for the gasoline octane rating. what is the iupac name for the compound?

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20.05.2023, solved by verified expert
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Rajat Thapa
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Mathematics, DAV Post Graduate College
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The structure of Isooctane is shown below,

IUPAC Name:
                      IUPAC name is assigned according to following rules.

1) Select the longest Chain:
                                            A longest chain of five carbon atoms was selected. The longest carbon chain is highlighted with Blue color. As there are five carbons in longest chain, so the parent name for this compound is Pentane.

2) Substituent Numbering:
                                         There are two options to start numbering either from one or another end. According to rules numbering should be started from the end close to many substituents. So, carbon 1 was assigned nearer to two methyl groups. 
                                        There are three methyl substituents, two at position 2 and one at position 4 (Highlighted RED). Hence, 2,2,4-Trimethyl.

Result:
           So, the final name is,

                                       2,2,4-Trimethylpentane 
Isooctane is the common name of the isomer of, №15699933, 01.03.2021 19:17
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Chemistry
Isooctane is the common name of the isomer of c8h18 used as the standard of 100 for the gasoline octane rating. what is the iupac name for the compound?
Step-by-step answer
P Answered by Specialist
The structure of Isooctane is shown below,

IUPAC Name:
                      IUPAC name is assigned according to following rules.

1) Select the longest Chain:
                                            A longest chain of five carbon atoms was selected. The longest carbon chain is highlighted with Blue color. As there are five carbons in longest chain, so the parent name for this compound is Pentane.

2) Substituent Numbering:
                                         There are two options to start numbering either from one or another end. According to rules numbering should be started from the end close to many substituents. So, carbon 1 was assigned nearer to two methyl groups. 
                                        There are three methyl substituents, two at position 2 and one at position 4 (Highlighted RED). Hence, 2,2,4-Trimethyl.

Result:
           So, the final name is,

                                       2,2,4-Trimethylpentane 
Isooctane is the common name of the isomer of c8h18 used as the standard of 100 for the gasoline oct
Chemistry
What elements combined with Strontium, St, in a 1:1 ratio?
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P Answered by PhD
Answer: chalcogens.
Explanation: Strontium is an alkaline earth metal, it always exhibits a degree of oxidation in its compounds +2.
Chalcogens are a group of 6 chemical elements (oxygen O, sulfur S, selenium se, tellurium te, polonium Po) that have an oxidation state of -2 => Chalcogens will combine with strontium in a ratio of 1:1.
Chemistry
LaToya uses 50 newtons (N) of force to pull a 500 N cart. Which statements are correct about calculating LaToya s mechanical advantage? Select all that apply.A. The input force is 50 N.B. The output force is 50 N.C. The input force is 500 N.D. The output force is 450 N.E. The mechanical advantage is 10.F. The mechanical advantage is 100.
Step-by-step answer
P Answered by Master

Answer:

A

Step-by-step explanation:

The input force is 50 N. But it will not create not any change. No mechanical advantage is observed.

Chemistry
Fiona claims that the diagram below shows simple machines, but Chad claims that it shows a compound machine. A man pushes a shopping cart up a ramp. Which statement best explains who is correct? Fiona is correct because less than three machines are shown in the diagram. Fiona is correct because the diagram shows two individual simple machines. Chad is correct because more than one machine is shown in the diagram. Chad is correct because the diagram shows two simple machines doing a job.
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P Answered by Specialist
Answer: b. Fiona is correct because the diagram shows two individual simple machines.

Explanation:
A mechanical device using which we can change the direction or magnitude of force applied is known as simple machine.
For example, in the given diagram there are two individual simple machines.
The machine helps in changing the direction or magnitude of force applied by the man. As a result, it becomes easy for him to carry different things easily from one place to another.
Thus, we can conclude that the statement Fiona is correct because the diagram shows two individual simple machines, is correct.
Answer: b. Fiona is correct because the diagram shows two individual simple machines. Explanation
Chemistry
Based on the equation, how many grams of Br2 are required to react completely with 29.2 grams of AlCl3 (5 points)? 2AlCl3 + 3Br2 → 2AlBr3 + 3Cl2
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P Answered by PhD

Answer:

52.6 gram

Step-by-step explanation:

It is clear by the equation 2(27+3×35.5)= 267 gm of AlCl3 reacts with 6× 80 = 480 gm of Br2 . So 29.2 gm reacts = 480× 29.2/267= 52.6 gm

Chemistry
Which of the following will have a lower ionization energy than scandium
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P Answered by Master

Calcium (Ca)(On the periodic table, ionization energy increases as you go up and to the right of the periodic table)

Calcium (Ca)(On the periodic table, ionization energy increases as you go up and to the right of the
Chemistry
Give an example of a protein structure that would give positive test with Molisch’s Reagent
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P Answered by PhD

glycoproteins

Explanation:

A positive reaction for Molisch's test is given by almost all carbohydrates (exceptions include tetroses & trioses). It can be noted that even some glycoproteins and nucleic acids give positive results for this test (since they tend to undergo hydrolysis when exposed to strong mineral acids and form monosaccharides).

Chemistry
what is the volume of a container that contains 24.0 grams of N2 gas st 328K and .884 atm?
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P Answered by PhD

Answer:

Taking into accoun the ideal gas law, The volume of a container that contains 24.0 grams of N2 gas at 328K and 0.884 atm is 26.07 L.

An ideal gas is a theoretical gas that is considered to be composed of point particles that move randomly and do not interact with each other. Gases in general are ideal when they are at high temperatures and low pressures.

The pressure, P, the temperature, T, and the volume, V, of an ideal gas, are related by a simple formula called the ideal gas law:  

P×V = n×R×T

where P is the gas pressure, V is the volume that occupies, T is its temperature, R is the ideal gas constant, and n is the number of moles of the gas. The universal constant of ideal gases R has the same value for all gaseous substances.

Explanation:

In this case, you know:

P= 0.884 atm

V= ?

n= Answer:Taking into accoun the ideal gas law, The volume of a container that contains 24.0 grams of N 0.857 moles (where 28 g/mole is the molar mass of N₂, that is, the amount of mass that the substance contains in one mole.)

R=0.082Answer:Taking into accoun the ideal gas law, The volume of a container that contains 24.0 grams of N

T= 328 K

Replacing in the ideal gas law:

0.884 atm×V= 0.857 moles× 0.082Answer:Taking into accoun the ideal gas law, The volume of a container that contains 24.0 grams of N ×328 K

Solving:

Answer:Taking into accoun the ideal gas law, The volume of a container that contains 24.0 grams of N

V= 26.07 L

The volume of a container that contains 24.0 grams of N2 gas at 328K and 0.884 atm is 26.07 L.

Chemistry
The reaction of 15 moles carbon with 30 moles O2. Will result in a theoretical yield of_ moles CO2.
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P Answered by PhD
15 moles.Explanation:Hello,In this case, the undergoing chemical reaction is:Clearly, since carbon and oxygen are in a 1:1 molar ratio, 15 moles of carbon will completely react with 15 moles of oxygen, therefore 15 moles of oxygen remain as leftovers. In such a way, since carbon and carbon dioxide are also in a 1:1 molar ratio, the theoretical yield of carbon dioxide is 15 moles based on the stoichiometry:Best regards.
Chemistry
carbon 14 has a half life of 5730 years how much carbon 14 will remain in a 100 g sample after 11460 years
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P Answered by PhD
Answer: 25 g
Explanation: Given:
Original amount (N₀) = 100 g
Number of half-lives (n) = 11460/5730 = 2
Amount remaining (N) = ?
N = 1/2ⁿ × N₀
N = 1/2^2 × 100
N = 0.25 × 100
N = 25 g
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