Rearange the equation to isolate a. (a+b/c)(d-e)=f find a =​

Answer:

Br-CH2-CH(CH3)2-C(Cl)H-CH(CH3)2-CHO

Explanation:

The molecule has a total of 14 carbon atoms, 13 hydrogen atoms, and 1 bromine atom. The carbon atoms are arranged in a chain with a methyl group attached to the second carbon atom, a chlorine atom attached to the third carbon atom, and two methyl groups attached to the fourth carbon atom. The fifth carbon atom has a carbonyl group attached to it.

The molecule is an aldehyde, which means that it has a carbonyl group (C=O) at the end of the chain. The carbonyl group is polar, and the oxygen atom has a partial negative charge. The hydrogen atom has a partial positive charge. This polarity makes the aldehyde group susceptible to nucleophilic attack.

The bromine and chlorine atoms are both electrophilic, which means that they have a partial positive charge. This makes them susceptible to nucleophilic attack.

The methyl groups are non-polar and do not have any significant reactivity.

The molecule is a chiral molecule, which means that it has a mirror image that is not superimposable on itself. This is because the carbon atom with the carbonyl group is attached to four different groups.

The molecule is a liquid at room temperature and has a strong odor. It is used in a variety of products, including perfumes, flavorings, and plastics.

The grams of magnesium hydroxide needed to yield 8.00 moles of magnesium chlorate is approximately 466.64 g. None of the options provided match the calculated value of 466.64 g.

To determine the grams of magnesium hydroxide (Mg(OH)2) needed to yield 8.00 moles of magnesium chlorate (Mg(ClO3)2), we need to consider the balanced chemical equation for the reaction between magnesium hydroxide and chlorine.

The balanced equation is as follows:

2 Mg(OH)2 + 6 Cl2 → 2 Mg(ClO3)2 + 2 H2O

From the balanced equation, we can see that 2 moles of Mg(OH)2 react with 6 moles of Cl2 to produce 2 moles of Mg(ClO3)2.

Therefore, the stoichiometric ratio is 2 moles of Mg(OH)2 : 2 moles of Mg(ClO3)2.

To calculate the grams of Mg(OH)2 needed, we can use the stoichiometric ratio and the given moles of Mg(ClO3)2.

Given:

Moles of Mg(ClO3)2 = 8.00 moles

Using the stoichiometric ratio, we have:

8.00 moles Mg(ClO3)2 × (2 moles Mg(OH)2 / 2 moles Mg(ClO3)2) = 8.00 moles Mg(OH)2

To convert moles to grams, we need to multiply by the molar mass of Mg(OH)2.

The molar mass of Mg(OH)2 = (24.31 g/mol) + (2 * 16.00 g/mol) = 58.33 g/mol

Grams of Mg(OH)2 = 8.00 moles Mg(OH)2 × 58.33 g/mol = 466.64 g

Therefore, the grams of magnesium hydroxide needed to yield 8.00 moles of magnesium chlorate is approximately 466.64 g.

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1) If the temperature of the system increases, the equilibrium constant k decreases.

2) the concentration of H₂ increases.

The reaction is given as :

CO +  2H₂   ⇄  CH₃OH                          ΔH = -91.8 KJ ( exothermic reaction)

1) Temperature is the only factor that changes the equilibrium constant for the given reaction. As temperature increases equilibrium constant decreases because the reaction is exothermic reaction.

                K = [ CH₃OH ] / [CO] [H₂]²

2) If the temperature increases the position of equilibrium moves to the left and concentration of H₂ increases.

Thus, 1) If the temperature of the system increases, the equilibrium constant k decreases.

2) the concentration of H₂ increases.

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Explanation:

An atom undergoes alpha decay by losing a helium atom.

So when bismuth undergoes alpha decay, we have;

²¹⁰₈₃Bi --> ⁴₂He + X

Mass number;

210 = 4 + x

x = 206

Atomic number;

83 = 2 + x

x = 81

The element is Thallium. The symbol is Ti.

For the second part;

X --> ⁴₂He + ²³⁴₉₀Th

Mass number;

x = 4 + 234 = 238

Atomic Number;

x = 2 + 90 = 92

The balanced nuclear equation is;

²³⁸₉₂U --> ⁴₂He + ²³⁴₉₀Th

Answer:

15 is not a correct scientific measurement.

Explanation:

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Answer:

linear electron and molecular geometry with a bond angle of 180 degrees and a hybridization of Sp

Explanation:

Answer:

\(\large \boxed{\text{-10.0 kJ}}\)

Explanation:

1. Calculate the work

w = - pΔV = -4.3 atm × (43 L - 20 L) = -4.3 × 23 L·atm = -98.9 L·atm

2. Convert litre-atmospheres to joules

\(w = \text{-98.9 L\cdot$atm } \times \dfrac{\text{101.3 J}}{\text{1 L$\cdot$atm }} = \text{-10000 J} = \textbf{-10.0 kJ}\\\\\text{The work done is $\large \boxed{\textbf{-10.0 kJ}}$}\)

The negative sign indicates that the work was done against the surroundings.

Answer:

2K +F₂→ 2KF

Explanation:

When we balance an equation, we are trying to ensure that the number of atoms of each element is the same on both sides of the arrow.

On the left side of the arrow, there is 1 K atom and 2 F atoms. On the right, there is 1 K and 1 F atom.

Since the number of K atoms is currently balanced, balance the number of F atoms.

K +F₂→ 2KF

Now, that the number of F atoms is balanced on both sides, check if the number of K atoms are balanced.

Left

K atoms: 1

F atoms: 2

Right

K atoms: 2

F atoms: 2

The number of K atoms is not balanced.

2K +F₂→ 2KF

Left

K atoms: 2

F atoms: 2

Right

K atoms: 2

F atoms: 2

The equation is now balanced.

Answer:

The southern hemisphere is currently experiencing "Summer"

Explanation:

The Southern hemisphere is experiencing summer because it is closer to the sun than the Northern Hemisphere and also, direct light is more hotter than indirect light.

So, first, let's try an EXPERIMENT!

Take a VERY bright flashlight or a very small laser that can't harm you or just burn a paper in 1 second.

Then, take a piece of paper, or maybe just your skin, (like your hand) and place it under the light or laser, (for the laser, you should probably take the paper), and place the light source right above your skin, then, after some time, when it gets hot, measure the temperature. (around like 30 seconds later),

Note down the temperature...

Now, do the same thing, accept, do it in a very weird angle, face it towards your paper or hand, but, do it in an angle. More than like 30 degrees. Then, after some time, note down the temperature.

You probably, noticed, that the direct light (the one with the straight light facing your paper or skin, was hotter). Look at the image below, and you can understand better.

So, the same thing applies to the earth. The southern hemisphere in this picture is facing more directly to the sun than the northern hemisphere. That is why your answer is

Thank you! Please mark me Brianliest!

Remember to have fun, and a nice day!

Answer:   summer

Explanation:

Answer:

The Atomic Number of an element is always equal to the Number of protons. The mass Number of an element is equal to the Protons added to the Neutrons. The element Sodium has an atomic Number of 11, and an average at

The element Sodium has an atomic number of 11 and an average atomic mass of 22.98 which makes the mass number 23.

Therefore

An atomic number of 11 means this atom will have 11 protons.

A mass number of 23 means 23 - 11 this atom will have 12 neutrons.

Since this atom is neutral the positive protons must be equal to the negative electrons. This atom will have 11 electrons.

Protons 11

Neutrons 12

Electrons 11

Answer:

Any Group 2A element (Be, Mg, Ca, Sr, Ba, Ra)

Explanation:

According to the Octet Rule, Sulfur would want to gain two electrons in its outermost shell to achieve an octet (8 total electrons).  The elements that could accomplish this in a one-to-one ratio would be Group 2A on the periodic table (alkaline earth metals).

There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, alkaline earth metals are the suitable elements.

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

An ionic compound is a metal and nonmetal combined compound. Ionic compound are very hard. They have high melting and boiling point because of strong ion bond.

The compound that is ionic in nature can be dissociated very easily in water. Since ionic compounds are polar in nature, they readily dissolve in water.  The elements that could accomplish this in a one-to-one ratio would be  alkaline earth metals

Therefore, alkaline earth metals are the suitable elements.

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The balanced chemical equation for the decomposition of aspirin (acetylsalicylic acid) is:

\(2C_{9}H_{8}O_{4} (aspirin) → 2C_{7}H_{6}O_{3} (salicylic acid) + 2CO_{2} (Carbon dioxide) + H_{2}O (water)\)

In this reaction, the aspirin molecule breaks down into salicylic acid, carbon dioxide, and water. The reaction is typically catalyzed by heat or exposure to acidic or basic conditions.

Aspirin, or acetylsalicylic acid, contains ester functional groups that can undergo hydrolysis. Under suitable conditions, the ester bond in aspirin is cleaved, leading to the formation of salicylic acid, which is the primary decomposition product. Additionally, carbon dioxide and water are released as byproducts of the reaction.

The balanced equation shows that for every two molecules of aspirin, two molecules of salicylic acid, two molecules of carbon dioxide, and one molecule of water are formed. Understanding the decomposition of aspirin is important in pharmaceutical and chemical industries to ensure the stability and shelf-life of the compound, as well as to study its breakdown products and potential side reactions.

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The given chemical equation, 2N₂ + 3H₂ <==>2NH3, is an example of a reversible reaction.option A.

The double arrows between the reactants and products indicate that the reaction can proceed in both directions, forming both products and reactants.The reversible reaction, also known as a chemical equilibrium reaction, refers to a chemical reaction that can occur in both forward and reverse directions. It occurs when reactants are converted into products, and the products are also converted back into the original reactants.A reversible reaction can be identified by the symbol “<==>” or “⇌” that appears between the reactants and products in the chemical equation. It denotes that the reaction is in a state of chemical equilibrium. When the reactants and products have achieved equilibrium, the rate of the forward and reverse reactions is equal, and there is no further net change in the amounts of the reactants and products.A combustion reaction is a type of exothermic reaction in which a substance reacts with an oxidizing agent to produce heat and light. A one-way reaction is a type of reaction that occurs in only one direction and cannot be reversed without significant changes to the reaction conditions, such as changing the temperature or pressure.A reversible reaction, unlike a one-way reaction, can occur in both directions and reach equilibrium when the forward and reverse reaction rates are equal.option A.

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Answer:

Tectonic plates

Explanation:

Tectonic plates are large plates that moves. There are different types of plate motion as a result of mantle convection.

The value of Kc for the given reaction is 0.0579 (rounded to four decimal places).

The formula for the equilibrium constant, Kc, of a reaction is given by the ratio of the product of the concentrations of the products raised to their respective stoichiometric coefficients to the product of the concentrations of the reactants raised to their respective stoichiometric coefficients.

The stoichiometric coefficients are the coefficients in the balanced chemical equation.

To determine the value of Kc for the reaction given by the following chemical equation:N2(g) + 3 H2(g) ⇌ 2 NH3(g)

we first need to write the expression for Kc.

The expression for Kc is given by the following formula:Kc = [NH3]² / [N2][H2]³.

We are given the equilibrium concentrations as follows:[N2]eq = 2.66 M[H2]eq = 0.64 M[NH3]eq = 3.34 M

We can substitute these values into the expression for Kc and obtain the following:Kc = (3.34)² / (2.66)(0.64)³ = 0.0579 (rounded to four decimal places).

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Answer:

D

Explanation: UsaTestPrep :))

Answer: copper gold silver

Explanation: They are in the same group.

Scientists hypothesized the existence of another subatomic particle in the nucleus because helium has an atomic mass ratio of 4:1 to hydrogen. Helium and hydrogen have a mass ratio of 2:1 if protons were the only subatomic particles in the nucleus.

Rutherford's well-known gold foil experiment helped him discover protons in 1909. He bombarded a paper-thin piece of gold with alpha particles. Alpha particles, which have a positive charge, struck a piece of gold foil. Alpha particles mostly passed through unharmed. This demonstrated that the gold atoms contained largely void space. All atoms include minuscule, negatively charged subatomic particles or electrons, as demonstrated by J.J. Thomson's cathode ray tube studies. Thomson proposed the plum pudding model of the atom, which had positively-charged "soup" and negatively-charged electrons inside. The gold foil test was the most well-known experiment conducted by Ernest Rutherford. A beam of alpha particles was aiming at the gold foil. Although some alpha particles were scattered backward, the majority of them pierced the foil. This demonstrated that the vast majority of an atom is composed of void space that encircles a tiny nucleus.

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Answer:

I guess D ...,...,.....

Answer:

KJ8RT898TGHO7-6734354546746R476

Explanation:

Answer:

no the mass will not change

Explanation:

Answer: 122.9 g

Explanation:  Fe2O3 mw = 160 of which 112 is Fe

to get 86 g Fe, 86*160/112 g oxide

Answer: The osmotic pressure of 5.0g of sucrose solution in 1 L is 271.32 torr.

Explanation:

Given: Mass = 5.0 g

Volume = 1 L

Molar mass of sucrose = 342.3 g/mol

Moles are the mass of a substance divided by its molar mass. So, moles of sucrose are calculated as follows.

\(Moles = \frac{mass}{molarmass}\\= \frac{5.0 g}{342.3 g/mol}\\= 0.0146 mol\)

Hence, concentration of sucrose is calculated as follows.

\(Concentration = \frac{moles}{Volume (in L)}\\= \frac{0.0146 mol}{1 L}\\= 0.0146 M\)

Formula used to calculate osmotic pressure is as follows.

\(\pi = CRT\)

where,

\(\pi\) = osmotic pressure

C = concentration

R = gas constant = 0.0821 L atm/mol K

T = temperature

Substitute the values into above formula as follows.

\(\pi = CRT\\= 0.0146 \times 0.0821 L atm/mol K \times 298 K\\= 0.357 atm (1 atm = 760 torr)\\= 271.32 torr\)

Thus, we can conclude that the osmotic pressure of 5.0g of sucrose solution in 1 L is 271.32 torr.

At equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.

1: Write the balanced chemical equation:

\(C_O\)(g) + \(Cl_2\)(g) ⟶ \(C_OCl_2\)(g)

2: Set up an ICE table to track the changes in moles of the substances involved in the reaction.

Initial:

\(C_O\)(g) = 0.3500 mol

\(Cl_2\)(g) = 0.05500 mol

\(C_OCl_2\)(g) = 0 mol

Change:

\(C_O\)(g) = -x

\(Cl_2\)(g) = -x

\(C_OCl_2\)(g) = +x

Equilibrium:

\(C_O\)(g) = 0.3500 - x mol

\(Cl_2\)(g) = 0.05500 - x mol

\(C_OCl_2\)(g) = x mol

3: Write the expression for the equilibrium constant (Kc) using the concentrations of the species involved:

Kc = [\(C_OCl_2\)(g)] / [\(C_O\)(g)] * [\(Cl_2\)(g)]

4: Substitute the given equilibrium constant (Kc) value into the expression:

1.2 x \(10^3\) = x / (0.3500 - x) * (0.05500 - x)

5: Solve the equation for x. Rearrange the equation to obtain a quadratic equation:

1.2 x \(10^3\) * (0.3500 - x) * (0.05500 - x) = x

6: Simplify and solve the quadratic equation. This can be done by multiplying out the terms, rearranging the equation to standard quadratic form, and then using the quadratic formula.

7: After solving the quadratic equation, you will find two possible values for x. However, since the number of moles cannot be negative, we discard the negative solution.

8: The positive value of x represents the number of moles of \(Cl_2\)(g) at equilibrium. Substitute the value of x into the expression for \(Cl_2\)(g):

\(Cl_2\)(g) = 0.05500 - x

9: Calculate the value of \(Cl_2\)(g) at equilibrium:

\(Cl_2\)(g) = 0.05500 - x

\(Cl_2\)(g) = 0.05500 - (positive value of x)

10: Calculate the final value of \(Cl_2\) (g) at equilibrium to get the answer.

Therefore, at equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.

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Complete Question

The complete question is shown on the first uploaded image

Answer:

The correct option is  ammonia

Explanation:

The mixture contains two base compound which are

           ammonia,

and     diethylamine

Now the addition of HCl which is  a strong acid in step 1  will cause the protonation of  the  two base compound , which makes the soluble hence resulting in them being extracted to the aqueous layer as represented in below

       \(NH_3 + HCl\to NH_4 ^{+} + Cl^-\)

and

     \((CH 3CH 2) 2NH + HCl \to (CH 3CH 2) 2NH_2^{+} + Cl\)

Answer:

the throwing back by a body or surface of light, heat, or sound without absorbing it.

"the reflection of light"

Explanation:

i hope this helps

According to Lechatliers principle, as the concentration  of HCl is decreasing, the reaction will shift to the reactant side to increase HCl, then the Keq decreases, since product concentration is decreases.

According to Lechatliers principle, when an any disorder imbalance the equilibrium of a reaction system, the system itself balances the factors and shifts to a new equilibrium.

If the concentration of any component is increased, then the reaction shifts to the direction in which it is consumed. If the concentration is decreased, the reaction shifts to the direction in which the component is produced.

Hence, as the HCl decreases, the reaction shifts to backwards direction to produce more HCl, then, concentration of reactants HCl and Mg increases, and that products and Keq decreases.

The reaction is an exothermic reaction. Hence, as the temperature is increased, the reaction shifts to the backward direction in which heat is used. Hence, reactant concentration increases, product concentration decreases, Keq also decreases.

If the temperature is reduced, the reaction shift to the forward direction. Hence, concentration of HCl, and Mg decreases but MgCl2 increases and Keq increases.

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