7. convert 22.7g to μg

Answer: 6.45 Joules

Explanation: I just did it

The IUPAC name of the given structure is 2-chloro-hexanoyl chloride.

The structure you provided is:

H3C-CH2-CH-CH2-C(Cl)-C(=O)-Cl

The IUPAC name of this structure is 2-chloro-hexanoyl chloride because of the 6-carbon chain and 1 acyl chloride group at the first C-atom.

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#17

#a

Group 15 elements have valency 3

#b

Let's check the EC of both

\(\\ \rm\Rrightarrow [O]=1s^22s^22p^4\)

\(\\ \rm\Rrightarrow [S]=[Ne]3s^23p^4\)

#c

Decrease in size

#18

#a

#b

#c

An acid such as hydrochloric acid (HCl) that ionizes freely and gives up most of its hydrogen ions is known as a strong acid. Strong acids have a very low pH and can markedly lower the pH of a solution, making it more acidic.

When dissolved in water, HCl dissociates almost completely into H+ and Cl- ions, making it a strong electrolyte. Other examples of strong acids include sulfuric acid (H2SO4), nitric acid (HNO3), and hydroiodic acid (HI). Strong acids are important in many chemical reactions and are commonly used in laboratories and industries. However, they can also be hazardous and must be handled with care. The strength of an acid is related to its ability to donate hydrogen ions (protons), and is measured on a scale called the pH scale. The pH scale ranges from 0 to 14, with 7 being neutral. Acids have a pH lower than 7, while bases have a pH higher than 7.

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The elements of Group 1 of the periodic table are kept in the table given below. Group 1, also known as the alkali metals. The difference in reactivity between top and bottom of periodic table is the reactivity increases as you move down the group. This is due to the outermost electron configuration of these elements.

The elements of Group 1 of the periodic table are kept in the table given below. Group 1, also known as the alkali metals, includes elements such as lithium (Li), sodium (Na), potassium (K), and so on. These elements exhibit similar chemical properties, which is why they are grouped together.

When observing the reactivity of alkali metals from the top of the group to the bottom, a significant difference can be observed. The reactivity increases as you move down the group. This is due to the outermost electron configuration of these elements.

Alkali metals have one electron in their outermost energy level, which is easily lost to form a positive ion. As you move down the group, the atomic radius increases, and the outermost electron is further from the nucleus. This leads to a decrease in the attractive force between the nucleus and the electron, making it easier for the outer electron to be lost. Hence, the reactivity increases from top to bottom in Group 1 of the periodic table.

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Answer:

Act exactly how he sees you... like what ever your personaltiy is, act that way but multilpy it...

Explanation:

Be kind and say hello

Answer:

Don't act weird, Act like a normal person and act like you are really going to have a great relationship!

Explanation:

I have had like 4 boyfriends, We broke up cause I acted weird and I was appeartly a bad girlfriend. So yeah, But there are plenty of fishes in the  sea for ya:) Mark me brainlest please!! Hope he is nice to ya, even tho your just friends. Have a great day!!

Answer:

Ionic bond is the intermediate in strength.

Explanation:

Ionic bond is weaker than covalent bond and stronger than hydrogen bond in strength because in ionic bond, the atoms attract each other due to opposite in charge. Ionic bond is a type of bond in which one atom losses electron completely and become cation (positive charge) while the other atom receive the electron and become anion (negative charge). so they attract each other due to opposite charges.

Answer:Plasma is highest energy state of matter.It consists of electrons,protons and neutral particles.

Explanation:(1) Plasma has a very high electrical conductivity .

(2) The motion of electrons and ions in plasma produces it's own electric and magnetic field

(3)It is readily influenced by electric and magnetic fields .

(4)It produces it's on electromagnetic radiations.



Answer:

A) compund

Explanation:

Answer:

0.228 J/g°C

Explanation:

The specific heat capacity, denoted by c, can be calculated using the formula:

Q = m × c × ∆T

Where; Q = amount of heat

m = mass

c = specific heat capacity

∆T = change in temperature

In this question, m = 9.0g, Q = 127J, T1 = 23°C, T2 = 85°C

Using, Q = m × c × ∆T

127 = 9 × c × (85-23)

127 = 9 × c × 62

127 = 558c

c = 127/558

c = 0.2275

c = 0.228 J/g°C

Answer: 35.4846 amu

Explanation: Hey! To find the average atomic mass of an element's isotopes here are the steps

1. Take the relative abundance of the chlorine isotope with the mass of 35 amu, this is 75.77, and divide by 100, 0.7577

Multiply that with the mass, 35 amu, (35 amu x 0.7577) = 26.5195

2. Do the same with the other isotope with a mass of 37 amu

Divide the relative abundance by 100, 24.23/100 = 0.2423  

Multiply 0.2423 by 37, that will be 8.9651.

Add the two answers (26.5195 + 8.9651) = 35.4846 amu

And there's your answer!

Algae blooms are most often caused by eutrophication.

Algae blooms are are dense layers of tiny green plants that occur on the surface of lakes and other bodies of water when there is an overabundance of nutrients (primarily phosphorus) on which algae depend.

Algae species tend to proliferate in growth (bloom) in the presence of abundance nutrients. This abundance of nutrients is as a result of a process called eutrophication.

Eutrophication is the ecosystem's response to the addition of artificial or natural nutrients, mainly phosphates, through detergents, fertilizers, or sewage, to an aquatic system.

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Regardless of solubility, a cell signaling molecule could not affect a target cell without specific receptor proteins within the cell or in the plasma membrane

Cells typically communicate using chemical signals. These chemical signals, which are proteins or other molecules produced by a sending cell, are often secreted from the cell and released into the extracellular space. There, they can float – like messages in a bottle – over to neigh

Not all cells can “hear” a particular chemical message. In order to detect a signal (that is, to be a target cell), a neighbor cell must have the right receptor for that signal.

When a signaling molecule binds to its receptor, it alters the shape or activity of the receptor, triggering a change inside of the cell. Signaling molecules are often called ligands, a general term for molecules that bind specifically to other molecules (such as receptors).

The message carried by a ligand is often relayed through a chain of chemical messengers inside the cell. Ultimately, it leads to a change in the cell, such as alteration in the activity of a gene or even the induction of a whole process, such as cell division. Thus, the original intercellular (between-cells) signal is converted into an intracellular (within-cell) signal that triggers a response.

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Answer:

I believe the molecular formula is MnBr2·4H2O or Br2H8MnO4

Explanation:

If more \(H_{2}\) and \(N_{2}\) are added to the reaction 3\(H_{2}\) + N2 → 2\(NH_{3}\) after it reaches equilibrium, two events will occur Shift in Equilibrium and Increased Yield of \(NH_{3}\)

1. Shift in Equilibrium: According to Le Chatelier's principle, when additional reactants are added, the equilibrium will shift in the forward direction to consume the added reactants and establish a new equilibrium. In this case, more \(NH_{3}\) will be produced to counteract the increase in \(H_{2}\) and \(N_{2}\).

2. Increased Yield of \(NH_{3}\): The shift in equilibrium towards the forward reaction will result in an increased yield of \(NH_{3}\). As more \(H_{2}\) and \(N_{2}\) are added, the reaction will favor the production of \(NH_{3}\) to maintain equilibrium. This will lead to an increase in the concentration of \(NH_{3}\) compared to the initial equilibrium state.

It is important to note that the equilibrium position will ultimately depend on factors such as the concentrations of \(H_{2}\), \(N_{2}\), and \(NH_{3}\), as well as the temperature and pressure of the system. By adding more reactants, the equilibrium will adjust to achieve a new balance, favoring the formation of more \(NH_{3}\).

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ANSWER

EXPLANATION

Given that

The number of moles lithium bromide is 5.5 moles

Firstly, write a balanced equation for the reaction

Find the number of moles of bromine using stoichiometry ratio

Let x represents the number of bromine

Answer:

The reaction will slow down because it is below the optimal temperature.

Explanation:

Enzymes catalyses a reaction and thus increases its rate. The rate of enzyme action is dependant on temperature by Arrhenius equation.  If the temperature reduces 10 degree celsius, then the rate enzyme action rate will also decreases accordingly.

An enzyme is a biological catalyst. They increases the rate of chemical reactions by attaining equilibrium fastly. This is achieved by decreasing the activation energies of the reactants.

There are various kinds of enzymes which are specific in their function and specific  to some substrates.  The temperature at which an enzyme shows its maximum activity is called optimum temperature.

The Arrhenius equation showing the relation between rate of reaction and temperature is:

\(K = Ae^{- \frac{E_{a}}{RT} }\)

Hence, as the temperature increases rate  also increase. The enzyme activity also. Therefore if the temperature reduces the enzyme activity reduces.

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The quickest production of H₂ gas can be achieved by carrying out the reaction at a temperature near the boiling point of water which is 100° Celsius.

For the quickest production of H₂ gas, the reaction should be done at a higher temperature. This is because as temperature increases, the kinetic energy of the particles increases, leading to higher reaction rate. As the reaction rate increases, it leads to an increased rate of H₂ gas production. Therefore, the reaction should be done at a higher temperature to achieve quicker production of H₂ gas which is the boiling point of water.

The rate at which reactants change into products is known as the rate of reaction or reaction rate. It goes without saying that the rate at which chemical reactions take place varies greatly. While certain chemical reactions occur almost instantly, others typically take time to achieve their final equilibrium.

For instance, because it happens quickly, wood burning has a high reaction rate, whereas iron rusting has a low reaction rate because it happens gradually.

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In dessert presentation one important aspect to consider is the visual appeal and aesthetics of the dessert.

The presentation of a dessert plays a crucial role in creating an enticing and memorable dining experience. The appearance of the dessert can greatly impact the perception and anticipation of its taste and quality. Therefore, attention should be given to factors such as color, texture, arrangement, and garnishments. For instance, color coordination is important to create an appealing visual impact. Harmonious color combinations can make the dessert more visually appealing. Additionally, textures should be varied to add interest and dimension to the presentation, such as incorporating crunchy elements with smooth components. Garnishments and decorations should be carefully chosen to complement the flavors and add a touch of elegance or playfulness, depending on the style and theme of the dessert. They can include edible flowers, chocolate shavings, fruit slices, or artistic drizzles of sauce. By considering the visual appeal in dessert presentation, it enhances the overall dining experience and creates an irresistible desire to indulge in the dessert.

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The reaction you have written is a classic example of the hydration of an alkyne. The HgSO4 serves as a catalyst for the reaction. Here is the balanced chemical equation for the reaction:

Asymmetrical alkyne + H2O + H2SO4 + HgSO4 → Ketone

The product of this reaction is a ketone. The exact ketone produced will depend on the structure of the alkyne used.

The mechanism for this reaction involves the addition of water to the triple bond of the alkyne, followed by protonation of the resulting alkene intermediate to form a carbocation.

The carbocation then undergoes nucleophilic attack by water, followed by deprotonation to yield the final ketone product.

It's worth noting that the use of mercury salts as catalysts in organic reactions is generally discouraged due to their toxicity and potential environmental impact.

There are alternative catalysts that can be used for the hydration of alkynes, such as palladium or platinum complexes.

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The concentration of CO2 in water at 25°C, when the pressure of CO2 over the solution is 4.9 atm, is approximately 0.1519 mol/L.

Henry's Law can be used to determine the CO2 concentration in water at 25°C and 4.9 atm of CO2. For CO2 in water at 25°C, the Henry's Law constant is 3.1 10(-2) mol/L atm. The concentration of CO2 in water can be calculated by multiplying the partial pressure of CO2 by the Henry's Law constant.

The concentration of CO2 in the water in this instance is roughly 0.1519 mol/L when the specified values are entered. This indicates that the concentration of CO2 dissolved in water at 25°C at a CO2 pressure of 4.9 atm is 0.1519 mol/L.

The relationship between a gas's partial pressure and its concentration in a liquid is described by Henry's Law. The concentration of a gas in a liquid is said to be directly proportional to its partial pressure when the temperature is constant. The Henry's Law constant, which changes with the gas and solvent, is the proportionality constant. We can determine the concentration of CO2 in water by utilizing the Henry's Law constant provided and the partial pressure of CO2.

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No, it does not pass the "fat pencil" test. Therefore, a normal distribution is not a reasonable model. Option B is the correct answer.

The "fat pencil" test is a quick visual check to determine if a dataset can be reasonably approximated by a normal distribution. In this case, the pH readings of wastewater show a significant deviation from a normal distribution. The presence of several low pH values (1.0) and a few high pH values (10.0, 10.5, 11.4) indicate a non-normal distribution with skewness and potential outliers. Therefore, it is not reasonable to model these data using a normal distribution.

Option B is the correct answer.

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The evaporation of water from your skin is an example of an endothermic reaction because heat is lost from the body as the water evaporates from the skin.

Based on the heat changes that occur in reaction, reactions can be classified into two types;

Exothermic reactions are reactions in which the heat content of the reactants is greater than the heat content of the products. Hence, heat is given out during the reaction. An example is the dissolution of acids in water.

Endothermic reactions are reactions in which the heat content of the reactants is less than the heat content of the products. Hence, heat is absorbed during the reaction. An example is the evaporation of water from the skin.

Other types of endothermic reactions are the melting of ice and thermal decomposition.

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Answer:

Chemical reaction occurs when chemical bonds between atoms are formed or broken . The substance that go into a chemical reactions are called reactants, and the substance produced at the end of the reaction are known as the product .

Answer:

Al  + 3AgCl  →  AlCl₃  + 3Ag

Explanation:

The given equation is:  

      Al  + AgCl  →  

We are to find the product and hence balance the equation. This problem is a simple single replacement reaction.

By virtue of this, Aluminum will displace Ag from the solution:

                       Al  + AgCl  →  AlCl₃  + Ag

    We then balance the equation:

                        Al  + 3AgCl  →  AlCl₃  + 3Ag

After 100 years, there will be 6.25 grams of the substance remaining.

Half-life is the time it takes for half of the radioactive atoms in a sample to decay or for the concentration of a substance to decrease by half.

Amount remaining = initial amount x (1/2)^(number of half-lives)

In this case,  half-life of the substance is 10 years, which means that after 10 years, half of the substance will have decayed. After another 10 years (20 years total), half of remaining substance will decay, leaving 1/4 of the original amount. After another 10 years (30 years total), half of that remaining amount will decay, leaving 1/8 of the original amount. This process continues every 10 years.

To find the amount of substance remaining after 100 years, we need to know how many half-lives have occurred in that time: 100 years / 10 years per half-life = 10 half-lives

Amount remaining = 400 g x (1/2)¹⁰= 6.25 g

Therefore, after 100 years, there will be 6.25 grams of the substance remaining.

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Answer:

cheese

Explanation:

the cheese would be the limiting factor if your sandwich needs to have  ONE of each of the ingredients..then you could only have 4 sandwiches  ....is there more info given?

   For instance if you need 5 pickles per sandwich, then you could only have 3 sandwiches and pickles would be the limiting reactant.