Mono addition of HBr to conjugated dienes leads to multiple products, and a given addition product can arise from more than one conjugated diene. Given below are the structures of five pairs of dienes - possible reactants in the reaction - and two allylic bromide products. Identify the pair of dienes wherein each diene can serve as a precursor for both of the addition products. Note that not all possible products are shown.

A condensed structural formula is a type of chemical structure representation that shows the connectivity of atoms in a molecule and the arrangement of functional groups.

In a condensed structural formula, the atoms are listed in the order in which they are bonded, and each atom is represented by its elemental symbol. The bonds between atoms are shown by either a line or a pair of lines, representing single or double bonds, respectively. Functional groups, such as hydroxyl (-OH) or carbonyl (C=O) groups, are also shown as part of the condensed formula. For example, the condensed structural formula for ethanol (CH3CH2OH) can be represented as follows:

CH3CH2OH

In this representation, the carbon atoms are shown in a chain, with the hydrogen atoms attached to them, and the hydroxyl group (-OH) is attached to one of the carbon atoms. Condensed structural formulas are commonly used in organic chemistry to represent the structures of complex molecules, and they provide a more compact representation of the molecule compared to other types of structural formulas, such as Lewis structures or line-angle structures.

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Answer:

volume = 0.013 m³

Explanation:

The question asks us to calculate the volume of 0.58 moles of H₂ gas at STP.

To do this, we must use the ideal gas equation:

\(\boxed{pV = nRT}\),

where:

• p = pressure in Pa

• V = volume in m³

• n = number of moles

• R = molar gas constant (8.31 Jkg⁻¹K⁻¹)

• T = temperature in K

From the question, we know that the number of moles of H₂ is 0.58. Therefore,  n = 0.58. We also know that the volume is asked for when the gas is at STP, therefore: T = 273 K, and p = 101.3 × 10³ Pa.

Using this data and the formula above, we can calculate the volume of the gas:

pV = nRT

⇒ 101.3 × 10³  ×  V = 0.58 × 8.31 × 273

⇒ V = \(\frac{0.58 \times 8.31 \times 273}{101.3 \times 10^3}\)

⇒ V = 0.013 m³

Therefore, the volume of the gas is 0.013 m³.

Answer:

its B

Explanation:

a p e x

Answer:

the answer is b. allows electricity to flow easily

- The atmospheric pressure in Denver, Colorado, is approximately 0.829 atm.

- The atmospheric pressure in Denver, Colorado, is approximately 627.522 torr.

The atmospheric pressure in Denver, Colorado, is usually about 84.0 kPa. To convert this pressure to atm and torr units, we can use the following conversion factors:

1 atm = 101.325 kPa

1 atm = 760 torr

First, let's convert 84.0 kPa to atm:

Pressure in atm = 84.0 kPa × (1 atm / 101.325 kPa) ≈ 0.829 atm

Therefore, the atmospheric pressure in Denver, Colorado, is approximately 0.829 atm.

Next, let's convert 84.0 kPa to torr:

Pressure in torr = 84.0 kPa × (760 torr / 101.325 kPa) ≈ 627.522 torr

Therefore, the atmospheric pressure in Denver, Colorado, is approximately 627.522 torr.

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Answer:

A

Explanation:

DNA and RNA being nucleic acids are proteins in nature hence same theory but just modified.

There are several possible structures for an alkane or cycloalkane with the formula C8H18 that has only primary hydrogen atoms. Here are some of them, along with their IUPAC systematic names:
1. 2,2,3-trimethylpentane
2. Octane
3. 2,3-dimethylhexane
4. 2-methylheptane
5. Methylcycloheptane
6. 2,2,3,3-tetramethylbutane
7. 1-methyl-2-ethyl-pentane
8. 2,2-dimethylhexane

Each of these structures contains eight carbon atoms and 18 hydrogen atoms, with only primary hydrogen atoms present. The IUPAC systematic names of these compounds describe the number and arrangement of the carbon atoms in the molecule, along with any substituent groups present.

Based on the given formula C8H18 and the requirement to have only primary hydrogen atoms, the correct IUPAC systematic name for the alkane is:2,2,3-trimethylpentane This is because all the hydrogen atoms in 2,2,3-trimethylpentane are primary. Other structures either have secondary or tertiary hydrogen atoms or do not fit the molecular formula.

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Answer:

C: Warm water is denser than cold water

Answer:

A compound supstence is any chemcail compond

Explanation:

Explanation:

one substance

+one substance=balanced of chemical equation

Answer:

ρHNO₃= 1.51 g/cm3

ρ = m/V

m = ρ x V

m = (1.51 g/cm3)(2 cm3)= 3.02 g de HNO₃

n = m/PM = 3.02 g/63.01 g/mol = 0.0479 mol de HNO₃

Explanation:

2 mL of concentrated nitric acid equals 0.0479 mol

Answer:

d. Years

Explanation:

Weathering takes millions and millions of years.

Answer: B) You are to continue heating the round-bottom flask until all liquid has been distilled.

Explanation:

Fractional distillation refers to a method that's useful for the separation of mixtures of solvents whereby there is less than 40°C in the boiling point difference.

With regards to the options given, the incorrect statement about the procedure for distillation is that you are to continue heating the round-bottom flask until all liquid has been distilled. This isn't correct.

This is an incomplete question, here is a complete question.

Which of the following is the correct word equation for the reaction described below? When sulfuric acid reacts with sodium hydroxide, sodium sulfate and water form.

(1) sulfuric acid + sodium hydroxide → sodium sulfate + water

(2) sulfuric acid → sodium hydroxide + sodium sulfate + water

(3) sodium sulfate + water → sulfuric acid + sodium hydroxide

(4) sodium sulfate + sulfuric acid → sodium hydroxide + water

Answer : The correct option is, (1)

Sulfuric acid + Sodium hydroxide → Sodium sulfate + Water

Explanation :

Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.

In the balanced chemical equation, the reactants and products are separated by a right arrow.

In the equation, the species present on the left side of the right arrow is known as reactant and the species present on the right side of the right arrow is known as product.

According to the question, when sulfuric acid reacts with sodium hydroxide then it gives sodium sulfate and water as a product.

The complete word equation for the reaction will be:

Sulfuric acid + Sodium hydroxide → Sodium sulfate + Water

All of the following molecules except CH₃CH₂CH₃ make up a homologous series.

A homologous series is a series of compound having same general formula and same functional group.

The general formula of alkane is CₙH₂ₙ₊₂

The general formula of alkene is CₙH₂ₙ

CH₃CH₂CH₃ (Propane) is the third homologous series of alkane which satisfies the general formula of alkane.

Thus from the above conclusion we can say that All of the following molecules except CH₃CH₂CH₃ make up a homologous series.

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Answer:

11. Redox

12. Acid/Base

13. Precipitation

14. Combustion

15. Precipitation

Answer:

weakness, There are two conditions that lead to a weak volcanic eruption, low viscosity magma and little presence of trapped gases.

strength, The VEI or (Volcanic Explosivity Index)  is a scale that describes the size of explosive volcanic eruptions based on magnitude and intensity. The numerical scale (from 0 to 8) is a logarithmic scale, and is generally analogous to the Richter and other magnitude scales for the size of earthquakes.

Explanation:

i really hope this helps. :)

An existing ecosystem can suffer from damage from invasive species in many different ways, such as shifting habitats and depriving native creatures of food and resources.

An invasive species is an organism that damages the environment or the economy in a new location in which it is not native. Invasive species may disrupt the food chain of a ecosystem by killing or substituting natural food sources. The invasive species could provide little to no food value to wildlife.

Accidental introduction of invasive species into a new area is common. In Central Asia, the Black Sea and the Caspian Sea are home to zebra mussels. Zebra mussels accidently made their way to the Great Lakes of North America after becoming affixed to massive ships that sailed between the two areas.

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Answer:

To find the identity of the isotope we must first calculate the mass number

Mass number (M) = A + Z

Where

A is the atomic number

Z is the neutron number

A = 47

Z = 60

M = 60 + 47 = 107

From the options above

The answer is option A

Hope this helps you

false

Explanation:

The more gravity pulls down on an object it gets heavier. Weight is just the amount of force gravity is putting on something. So if gravity is pulling it down more ut would get heavier.

Answer:

False

Explanation:

The move gravity there is pulling on something, the more it'll weigh. The less gravity something or someone has, the less they will weigh. For example, on the moon things weigh less because there is less gravity pulling on objects.

Answer:

four valence electrons

Explanation:

If 5.0 liter sample if a liquid weighs 3400 grams. The density of the liquid in units of gram/ml will be 680.

Density is termed as the substance of a mass per unit volume. It is denoted by ρ. It is defined as mass will be divided by volume.  ρ= m / v.

ρ is the density, whereas, V is the volume, and m is the mass.

Based on the given conditions, formulate 5 × x = 3400

Divide both the sides of the equation by the coefficient of a variable: x = 3400 / 5

Cross out the common factor x = 680

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Answer:

Physical

Explanation:

Because thats the answer

The final volume must be approximately 16.87 liters for the pressure of the gas to be 1.62 atm at a temperature of 334 K.

To calculate the final volume, we can use the ideal gas law equation: PV = nRT, where P is the pressure, V is the volume, n is the number of moles of gas, R is the ideal gas constant, and T is the temperature. Given that the pressure (P) is 1.62 atm, the temperature (T) is 334 K, and assuming we have one mole of gas (n = 1), we can plug these values into the equation.

V = (nRT) / P

V = (1 * 0.0821 * 334) / 1.62

Using the gas constant R = 0.0821 L·atm/(mol·K), we can calculate the final volume as follows:

V = (27.314) / 1.62

V ≈ 16.87 liters

Therefore, the final volume must be approximately 16.87 liters for the pressure of the gas to be 1.62 atm at a temperature of 334 K.

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A healthcare provider who functions as a liaison between team leaders and other healthcare providers is often referred to as a "care coordinator" or "care manager."

A managed care organization can be defined as a health care provider or a group of organizations that provide medical services. These often provide the managed health care plans. Care coordinators work closely with team leaders, such as physicians or nurses, to ensure effective coordination and delivery of care to patients. They serve as a central point of contact, relaying important information, coordinating appointments, and facilitating the sharing of patient data and treatment plans among healthcare providers.

The managed health care organizations develop contracts with the insurers or self-insured employees, finances that delivers the health care using care provider network, products and specific services. It provides discounts in treatments.

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For lemonade titration 0.003952 mol is required which is 3 times the 0.001369 mol which is for citric acid titration.

Phenolphthalein has properties that make it suitable for use in tritation, including the fact that it turns pink in basic solutions but is colourless in acidic conditions.

This implies that the colour of the solution being tritraed will change at the equivalence point (really, just a tiny quantity of the solution is added after reaching the equivalence point).

The triated solution will remain colourless with the phenolphtalein and turn pink at the equivalence point if the solution being triated is an acid.

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Answer: More than one atom of the same type chemically joined together

Explanation:

An atom is the smallest unit of any matter which may or may not have independent existence. Example: Argon (Ar) is an element which exist as Ar atom only.

Molecule is the smallest unit of any matter which always have independent existence. For example: Hydrogen (H) is an element which can exist in nature as \(H_2\) molecule only.

Atoms of different elements chemically joined together is called as a compound. Example: \(H_2O\) is a compound formed by chemical combination of hydrogen (H) and oxygen (O) atom.