there is something wrong with the following name. write the structure for 2-ethylpropane.

An alternative method by which we can overcome this global issue is by harnessing Solar energy.

Discussion:

Fossil fuels cause environmental pollution. This is because they are organic compounds and on combustion, they release air pollutants such as, Carbon monoxide.

As a panacea, the use of solar panels for harnessing Solar energy in a bid to replace energy from fossil fuels will prove to be am effective method by which we can overcome the global issue of pollution caused by burning of fossil fuels.

Solar energy is a clean source of energy as there's no release of harmful air pollutants.

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Alternative method by which we can overcome this global issue is by

harnessing energy with less form of pollution. These include:

Fossil fuel burning releases greenhouse gases such as Carbon dioxide,

nitrous oxide etc which causes pollution to the atmosphere.

It is best to adopt alternative methods mentioned above to ensure pollution

is reduced to the barest minimum. This helps to prevent ozone depletion and

global warming. It also reduces risks of respiratory diseases due to the

inhalation of the gases.

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The gram formula mass of sodium sulfide is 78.043 g/mol.

The formula of sodium sulfide is Na₂S. It consists of two sodium (Na) atoms and one sulfur (S) atom, with a sulfur-sodium bond.

The gram formula mass of sodium sulfide is 78.043 g/mol. This mass represents the total mass of the compound.

The gram formula mass, the atomic masses of all the atoms present in the compound are added together.

For sodium sulfide (Na₂S), the gram formula mass is determined as follows:

Gram formula mass = (2 x atomic mass of sodium) + (1 x atomic mass of sulfur)

Gram formula mass = (2 x 22.990) + (1 x 32.060)

Gram formula mass = 45.980 + 32.060

Gram formula mass = 78.043 g/mol

It is an inorganic compound made up of two sodium atoms and one sulfur atom, with a sulfur-sodium bond.

The gram formula mass of sodium sulfide is 78.043 g/mol, and its chemical formula is Na₂S.

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Moderates weather so that highs and lows are less extreme because of sea breeze motion.

Sea breeze are that as the warm air from the land is rising and the cooler air from the ocean is flowing over land and will replace the warmer air that is rising. in simple words , land gets warmer during the day than the water and the hot air rising up and cooler air move towards the land  called as sea breeze. moderate weather is refers to that weather which is neither very cold nor very hot.

Thus, Moderate weather so that highs and lows are less extreme because of sea breeze motion.

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The gas with the lowest root mean square velocity at 400 K is Ne, and its root mean square velocity at 400 K is 444.6 m/s.

vrms = sqrt((3RT)/M)

where R is the gas constant, T is the temperature in Kelvin, and M is the molar mass of the gas.

For Ne gas at 400 K, the molar mass is 20.18 g/mol. Thus, we have:

vrms = sqrt((3 x 8.314 J/mol-K x 400 K)/(20.18 g/mol x 0.001 kg/g))

vrms = 444.6 m/s (rounded to one decimal place)

Therefore, the root mean square velocity of Ne gas at 400 K is 444.6 m/s.

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Answer:

D +405.0kJ mol-¹

Explanation:

Since bond energy is the energy required to break a bond, the energy of dissociation of X₂H₆ = +2775 kJmol⁻¹.

Since there is one X-X bond and six X-H bonds,

Bond energy of one X-X bond + Bond energy of six X-H bonds = energy of dissociation of X₂H₆.

Since bond energy of one X-H bond = 395 kJ mol⁻¹, then

Bond energy of one X-X bond + Bond energy of six X-H bonds = energy of dissociation of X₂H₆

Bond energy of one X-X bond + 6 × one X-H bond = +2775 kJmol⁻¹.

Bond energy of one X-X bond + 6 × 395 kJ mol⁻¹ = +2775 kJmol⁻¹.

Bond energy of one X-X bond + 2370 kJ mol⁻¹ = 2775 kJmol⁻¹

Bond energy of one X-X bond = 2775 kJmol⁻¹ - 2370 kJ mol⁻¹

Bond energy of one X-X bond = +405 kJmol⁻¹

Sodium hydroxide wasn't used in the synthesis of divanillyl oxalate because it's a strong base.

It should be noted that sodium hydroxide simply means a corrosive cystaline solid which readily absorbs moisture until it dissolves.

In this case, sodium hydroxide wasn't used in the synthesis of divanillyl oxalate because it's a strong base and will decrease the yield of the product.

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Divanillyl oxalate is a chemical that is produced by triethylamine. Sodium hydroxide is not used in its synthesis as it is a strong base.

Sodium hydroxide or caustic soda is an ionic compound with ions of sodium and hydroxide. The formula is shown as, \(\rm NaOH\). It is crystalline and absorbs moisture from the surrounding.

It is not used in the synthesis of divanillyl oxalate as it is a strong base with pH 14 that affects the yield of the product in the reaction.

Therefore, sodium hydroxide is not used in the synthesis reaction.

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Answer:

ipotseeeeeeeeeeeeeeee

Answer:

Fairly certain it is the tension of the string

Answer:It would be C

The dart frog and hosta plant have different types of adaptations. The dart frog has physical adaptations such as bright colors, toxic skin, and webbed feet that help it survive in its environment.

These adaptations protect the frog from predators and enable it to move easily through its habitat. In contrast, the hosta plant has physiological adaptations such as the ability to tolerate shade and grow in moist soil. These adaptations help the plant to survive in its environment by conserving water and maximizing photosynthesis in low-light conditions. Overall, while both species have evolved adaptations to survive in their respective environments, the type of adaptations they have developed differ depending on their specific needs and challenges in their habitats.

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Answer:

0.419 mol O₂

Explanation:

just took test

According to the nurse preceptor, the new nurse adheres to a number of safe practices while administering red blood cells (RBCs) to a patient.

Based on the given options, the actions that are deemed safe by the nurse preceptor are:

Using large gauge catheters (20-24 gauge). When giving red blood cells (RBCs) to a patient, the novice nurse follows a number of safe procedures, according to the nurse preceptor. To ensure appropriate flushing and lower the chance of an air embolism, the inexperienced nurse correctly primes the intravenous tube with 0.9% sodium chloride in the first step. The second step is for the inexperienced nurse to collect and record a complete set of baseline vital signs. This creates a baseline for monitoring the client's status both before and after the transfusion. Third, in accordance with the advised duration for safe administration, the nurse modifies the infusion rate to administer the RBCs in 4 hours as opposed to 6 hours. Fourth, the inexperienced nurse employs big gauge catheters (20-24 gauge) to promote quick and smooth blood product flow and reduce problems.

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Answer:

Neutral

Explanation:

We can consider this salt as a neutral one. It can be prepared by a neutralization reaction between the base and the acid.

CsOH  + HBr →  H₂O  + CsBr

As the two reactants are strong, the HBr as a strong acid, and the CsOH as a strong base, the ions are considered as: the weak conjugate acid and the weak conjugate base.

Br⁻  +  H₂O ← HBr + OH⁻

Cs⁺  +  H₂O ←  CsOH  +  H⁺

They can not react to water, that's why the salt is neutral (similar as the NaCl)

pH = 7

Answer:

The source of the activation energy needed to push reactions forward is typically heat energy from the surroundings.

Explanation:

The activation energy of a particular reaction determines the rate at which it will proceed. The higher the activation energy, the slower the chemical reaction will be

Answer:

A

Explanation:

In conclusion, when cyanide and water react in a proton transfer reaction, hydrogen cyanide and hydroxide are formed. One of the atoms involved in this reaction does not have a properly depicted valence.

Cyanide and water react in a proton transfer reaction to form hydrogen cyanide and hydroxide.

In this reaction, one of the atoms involved does not have a properly depicted valence.

To understand the reaction, let's break it down step-by-step:

1. The cyanide molecule (CN-) reacts with a water molecule (H2O).
2. In the reaction, a proton (H+) is transferred from the water molecule to the cyanide ion.
3. As a result, a hydrogen cyanide molecule (HCN) and a hydroxide ion (OH-) are formed.

It is important to note that one of the atoms in this reaction does not have a properly depicted valence.

This means that the atom may not have the correct number of valence electrons or may not be showing the correct valence state.

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Answer:

b

Explanation:

Ethyne  will contain the strongest bond between the two carbon atoms as  the triple bonds are the strongest.

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

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Answer:

valence electrons

Answer: I'm guessing but I think this is the answer and also what I put in mine sorry if wrong

Explanation: I think it's "B.- Slightly Acidic" srry if it's too late-

Answer:

0.0125mol/dm³

Explanation:

Given parameters:

Mass of carbon dioxide  = 0.22g

Volume of water  = 400cm³

Unknown:

Concentration in mol/dm³ =  ?

Solution:

Concentration is the amount of solute dissolved in a solvent.

The formula is expressed as;

    Concentration  = \(\frac{number of moles}{volume}\)  

Number of moles  = \(\frac{mass}{molar mass}\)

       Molar mass of CO₂   = 12 + 3(16) = 44g/mol

Number of moles  = \(\frac{0.22}{44}\)   = 0.0005mol

Now,

             1000cm³  = 1dm³

             400cm³ = \(\frac{400}{1000}\)  = 0.4dm³

Insert the parameters and solve;

     Concentration  = \(\frac{0.005}{0.4}\)  = 0.0125mol/dm³

Table salt, also known as sodium chloride, is a chemical compound that is made up of the elements sodium and chlorine. Sodium and chlorine, both of which are very reactive, combine to form a stable compound known as table salt. Sodium is a metallic element that is located in Group 1 of the periodic table, while chlorine is a nonmetallic element that is located in Group 17 or 7A of the periodic table.

Table salt is a well-known compound that has a variety of applications, including as a food seasoning, a food preservative, and an ingredient in chemical manufacturing. In addition to its taste-enhancing properties, sodium chloride is essential for maintaining proper fluid balance in the body, aiding nerve and muscle function, and transporting nutrients across cell membranes. Despite its many benefits, excessive intake of table salt can lead to high blood pressure and other health problems. To avoid this, it is recommended that people consume salt in moderation and pay attention to their sodium intake from other sources as well.

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Answer:

100008

Explanation:

The v/v concentration of 160ml pure acetic acid in 650ml solution is 24.61 %.

There is 160ml of pure acetic acid in the 650 ml solution of acetic acid.

The volume/volume concentration of acetic acid can be calculated as:

Volume/Volume = \(\rm \frac{volume\;of\;acetic\;acid}{Volume\;of\;solution}\;\times\;100\)

v/v = \(\rm \frac{160}{650}\;\times\;100\)

v/v = 0.2461 \(\rm \times\) 100

v/v = 24.61 %

The concentration of pure acetic acid in the 650 ml solution is 24.61 % (v/v).

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Answer:

A.

Explanation:

In the case of a seesaw, the object at the top is the effort and the object at the bottom is the load.

Answer: Larger molecules have stronger London forces.

Explanation:

Pentane therefore has a stronger force than butane.

Answer:

160.3 g S

Explanation: there you go

Because the elements in the same group have comparable chemical characteristics, you would think of an element from the same vertical column.

This is further explained below.

Generally, A tabular representation of the many elements that make up matter, the periodic table is sometimes referred to as the periodic table of the elements.

Because of its widespread use across a variety of scientific fields, including chemistry, physics, and other fields, it is often regarded as an emblem of the chemical sciences.

In conclusion, Given the fact that the elements exists in the same group and have like chemical features, its best you consider elements found in same vertical period table column.

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Answer:

1) H30+ or H+ concentration is 0.0045M.

2) OH- concentration is 2.2 * 10^-12 M

3) pH =  2.35

Explanation:

1) HCl is strong acid so it completely dissociates which means you have

HCl------> H+ + Cl-

0-------> 0.0045 M, 0.0045M

We know now that H30+ or H+ concentration is 0.0045M.

2) H3O+ and OH- are related via the auto ionization of water.

Kw = 1.0*10^-14

(H3O) * (OH-) = 1.0*10^-14

OH- = ( 1.0*10^-14) / (0.0045) = 2.2 * 10^-12 M

3) pH measures the acidity based on the amount of hydrogen/hydronium ions in solution. H+ and H3O+ are both the same thing (either way it permissible to write)

The formula is pH= - log (H+) [now we just plug in the H+ we found)

pH = - log [0.0045] = 2.35

The correct name for the molecule C₁₁H₂₄ is 3-ethyl-5-propylhexane (option B).

The molecule C₁₁H₂₄ consists of an eight-carbon chain (octane) with an ethyl group attached at the third carbon and a propyl group attached at the fifth carbon. This gives the molecule a total of eleven carbon atoms, which is why it is called an undecane. The formula C₁₁H₂₄ indicates that there are 24 hydrogen atoms in the molecule (2 for each carbon atom).

Since the molecule has two different types of substituent groups, it is named using the IUPAC system. The names of substituent groups are arranged alphabetically and preceded by a number that indicates the position of the group on the chain. In this case, the ethyl group is at the third position and the propyl group is at the fifth position. Therefore, the name of the molecule is 3-ethyl-5-propylhexane.

Your question is incomplete, but most probably your question was

C₁₁H₂₄

Which of the following is the correct name for the molecule above? group of answer choices

A. 3-ethyl-5-methyloctane

B. 3-ethyl-5-propylhexane

C. 4-methyl-6-ethyloctane

D. 2-propyl-4-ethylhexane

Thus, the correct option is B

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