copy the structure of edta4- from your textbook and circle all six atoms that act as lewis bases. why does edta4- cease to function as a chelating ligand if acid is added to the solution?

To make 500.0 mL of a 0.50 M solution, 85.6 grams of sucrose are required.

We must apply the molarity formula to determine the mass of sucrose required to create a 0.50 M solution:

Moles of solute per liter of solution is known as molarity (M).

This formula can be changed to account for moles of solute:

Molarity (M) x liters of solution equals moles of solute.

The molecular weight of sucrose can then be used to convert moles to grams:

Moles of solute divided by molecular weight gives grams of solute.

To start, let's figure out how many moles of sucrose are required to create a 0.50 M solution:

Since 1 L = 1000 mL, a solution's molarity (M) is equal to 0.50 M, or 500.0 mL.

Molarity (M) x liters of solution equals moles of sucrose.

Molecules of sucrose are equal to 0.50 M x 0.5 L, or 0.25 moles.

Let's now get the required mass using the molecular weight of sucrose:

Sucrose (C12H22O11) has a molecular weight of 342.30 g/mol (12 x 12.01 g/mol) plus 22 x 1.01 g/mol plus 11 x 16.00 g/mol).

Moles of sucrose times molecular weight equal grams of sucrose.

342.30 g/mol times 0.25 moles to get grams of sucrose.

sucrose is 85.6 grams (rounded to two decimal places).

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The sample of oxygen will occupy approximately 18.5 mL at -70 °C and the same pressure.

The force exerted by a gas on specific area is known as gas pressure..

As we know, (P₁ V₁) /(T₁) = (P₂V₂) /(T₂)

Given, P₁ is the initial pressure (452 torr); V₁ is initial volume (32.2 mL)

T₁ is initial temperature in Kelvin (30 °C + 273.15 = 303.15 K)

P₂ is final pressure (452 torr); V₂ is final volume (what we want to find)

T₂ is the final temperature in Kelvin (-70 °C + 273.15 = 203.15 K)

Now, V2 = (P₁ V₁ T₂) / (P2 T₁)

V₂ = (452 torr x 32.2 mL x 203.15 K) / (452 torr x 303.15 K)

V₂ ≈ 18.5 mL

Therefore, the sample of oxygen will occupy approximately 18.5 mL at -70 °C and the same pressure.

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a. The Lewis structure for SCl₂ is S-Cl-Cl with a lone pair on sulfur. The VSEPR theory predicts a bent or V-shaped molecular geometry.

b. The Lewis structure for PI₃ is P-I-I-I with two lone pairs on the central phosphorus atom. The VSEPR theory predicts a trigonal pyramidal molecular geometry.

c. The Lewis structure for Cl₂CO is O=C=Cl with no lone pairs. The VSEPR theory predicts a linear molecular geometry for Cl2CO.

d. The Lewis structure for NH₂Cl is H-N-Cl with two lone pairs on the nitrogen atom. The VSEPR theory predicts a trigonal pyramidal molecular geometry.

e. The Lewis structure for SiCl₃Br is Br-Si-Cl-Cl-Cl with no lone pairs. The VSEPR theory predicts a trigonal pyramidal molecular geometry.

f. The Lewis structure for ONCl is O=N-Cl with no lone pairs. The VSEPR theory predicts a linear molecular geometry.

To draw the Lewis structure, you need to determine the number of valence electrons for each atom in the molecule and then arrange them to form covalent bonds while fulfilling the octet rule (except for hydrogen, which follows the duet rule). Once the Lewis structure is determined, you can use the VSEPR theory to predict the molecular geometry based on the arrangement of electron pairs around the central atom.

In each case, the molecular geometry is determined by the number of bonding and lone pairs of electrons around the central atom. The VSEPR theory provides a model for predicting the shapes of molecules based on the repulsion between electron pairs.

The molecular geometries predicted by the VSEPR theory are as follows:

a. SCl₂: Bent or V-shaped

b. PI₃: Trigonal pyramidal

c. Cl₂CO: Linear

d. NH₂Cl: Trigonal pyramidal

e. SiCl₃Br: Trigonal pyramidal

f. ONCl: Linear

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The first plateau represents the boiling point of the pure solvent. This is explained in the below section.

Boiling point elevation refers back to the growth withinside the boiling factor of a solvent upon the addition of a solute. When a non-unstable solute is introduced to a solvent, the ensuing solution has a better boiling factor than that of the natural solvent. Boiling-factor elevation describes the phenomenon that the boiling factor of a liquid can be better whilst any other compound is introduced, which means that an answer has a better boiling factor than a natural solvent. This takes place every time a non-unstable solute, including a salt, is introduced to a natural solvent, including water.

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Answer:

133242535455555555555555

Explanation:

Answer:

Phosphorus would form a -3 charge

Explanation:

Phosphorus has five outer electrons that can bind  atoms. As a result, Phosphorus forms a ion has a charge of -3.

Answer:

answer is b

Explanation:

please follow me

2.385 grams of Vitamin C must be weighed out for the experiment.

Given:

Volume of Vitamin C solution needed (V) = 250.00 mL

Molarity of Vitamin C solution (M) = 9.54 x 10⁻³ M

Amount of Vitamin C to be calculated (n)Formula used to calculate amount of solute (n) = M × V

Amount of Vitamin C (n) = 9.54 x 10⁻³ M × 250.00 mL = 2.385 g (to 4 sig. figs.)

Therefore, 2.385 grams of Vitamin C must be weighed out for the experiment.

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1.5 grams of aluminum oxide are actually produced in a reaction of 1.00 grams of oxygen gas and 1.00 grams of aluminum tin. The percentage yield of the reaction is 100%.

To find the percentage yield, we need to know the theoretical yield and the actual yield of the reaction.

The theoretical yield is the amount of product that would be produced in an ideal reaction, based on the stoichiometry of the reaction and assuming complete conversion of reactants. In this case, the balanced equation for the reaction is:

4 Al + 3 O2 → 2 Al2O3

The molar mass of Al2O3 is calculated as:

2(27.0 g/mol Al) + 3(16.0 g/mol O) = 102.0 g/mol Al2O3

To find the theoretical yield, we calculate the number of moles of O2 and Al required to produce 1.5 g of Al2O3. Using the given mass of Al2O3, we can convert it to moles of Al2O3, moles of O2, and moles of Al, based on the stoichiometry of the reaction. The calculations yield a requirement of 0.939 g of O2.

Therefore, the theoretical yield of Al2O3 is 1.5 g. This is the maximum amount of Al2O3 that can be produced from 0.939 g of O2 and 1.00 g of Al, assuming the reaction goes to completion.

The actual yield is given as 1.5 g of Al2O3, which matches the theoretical yield.

To calculate the percentage yield, we use the formula: percentage yield = (actual yield/theoretical yield) × 100%.

Plugging in the values, we get: percentage yield = (1.5 g/1.5 g) × 100% = 100%.

The percentage yield of the reaction is 100%. This indicates that the actual yield of Al2O3 obtained in the reaction is equal to the theoretical yield, implying that the reaction proceeded with maximum efficiency and without any losses.

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When the tree species was preserved as a fossil in the Arizona desert, the environment was likely different compared to the present. Based on the fact that the tree species is now extinct, infer that the conditions that supported its existence have significantly changed.

In the past, the environment where the tree lived may have had different climatic conditions, such as temperature, precipitation patterns, and humidity levels. It may have been part of a specific ecosystem or habitat that provided suitable resources for the tree's growth and survival. The tree species may have had adaptations that allowed it to thrive in that particular environment.

The extinction of the tree species may have had cascading effects on other living things that were associated with it. For example, other plant species that relied on the tree for shade or as a host for epiphytic growth might have also suffered or disappeared. Similarly, animals that depended on the tree for food, shelter, or nesting sites could have been affected by its extinction.

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Answer:

3kcl+ 02

Explanation:

in this way we can balance the chemical equation

Second Contributing Structure: Modify electron distribution with positive and negative formal charges.

The second and third contributing structures of the given molecules, along with the corresponding formal charges, are as follows:

Second Contributing Structure:

Draw the structure with modified electron distribution, considering one of the atoms to have a positive formal charge and another atom to have a negative formal charge.

Third Contributing Structure:

Draw the structure with another modified electron distribution, considering the positive and negative formal charges to be placed on different atoms compared to the second structure.

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Single-replacement reactions will occur if the reaction below occurs

K(s) + ZnCl₂(aq) →→→ KCl₂ + Zn.

This is also referred to as single displacement reaction and it is referred to as a reaction in which one element is substituted for another element in a chemical reaction.

Single-replacement reactions will occur in the reaction below because it follows and obeys this condition which is:

A + BX ⇒  B + AX

K(s) + ZnCl₂(aq) →→→ KCl₂ + Zn.

Here we can deduce that zinc was substituted which is therefore the reason why it was chosen as the correct choice in this scenario.

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if dfb = 3 and dft = 29 and fobt = 3.15, using the given we can can reject our null hypothesis, H_0.

Option (a) is the correct choice.

From the available information,

d fB=3, d fT=29, alpha=0.05, F_{obt}=3.15

Then, dfw = dfT-dfB = 29-3 = 26

In variance analysis, the F value is utilized (ANOVA). Two mean squares are divided to calculate it.

The ratio of explained variance to unexplained variance is calculated using this formula. A theoretical distribution is the F distribution.

In hypothesis testing, F Statistics are looked up using the F Table. Although it's more typical to perform tests using software like Excel or SPSS, the F Table might be helpful for rapidly searching up several data at once.

From the F-table,

The tabulated value at F_{0.05}(3,26) is 2.975.

Here the calculated value 3.15 is greater than the tabulated value 2.975,

So, we can reject our null hypothesis, H_0.

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The complete question should be like:

if dfb = 3 and dft = 29 and fobt = 3.15, what would you conclude using a = 0.05?

(a) reject  H_0

(b) reject  H_1

(c) retain  H_0

(d) retain  H_1

When a bunch of salt is added and stirred into the ice, the lowest temperature that can be attained will be at -21 °C

.Why?

Adding salt to ice lowers its freezing point. In other words, the salt makes the ice melt at a temperature lower than 0 °C. Salt dissolves in the liquid water in ice, which lowers the temperature of the mixture. Therefore, the lowest temperature is at -21 °C. In addition, the temperature stays at this level because the process of melting the ice takes energy from the saltwater mixture, which keeps the temperature from rising.What happens to the amount of liquid present if you keep stirring and adding salt?The amount of liquid present will increase if you keep stirring and adding salt. When salt is added to ice, it lowers the freezing point of water. As a result, the ice begins to melt, producing liquid water. Therefore, by adding salt to the ice, the amount of liquid present increases. This effect is the opposite of the one that happens when water is cooled and frozen. The water molecules bond and form ice, reducing the amount of liquid present.  How can we understand this phenomenon in terms of thermal and bond energy systems?This phenomenon can be explained by the Energy-Interaction Model. When ice is mixed with salt, thermal energy moves from the surroundings into the system, which reduces the temperature of the mixture. As the ice melts, the energy required to break the bonds between water molecules is taken from the surroundings. The bonds between the water molecules are weakened when salt is added, which requires less energy to break. Thus, the addition of salt allows more energy to be taken from the surroundings and the temperature to drop further.Explanation of changes observed in this physical system (decrease in temperature and change of phase) in terms of the Energy-Interaction Model:When the salt is added to the ice, the thermal energy from the surroundings moves into the system. This reduces the temperature of the mixture. As the ice melts, the energy required to break the bonds between water molecules is taken from the surroundings. The bonds between the water molecules are weakened when salt is added, which requires less energy to break. Thus, the addition of salt allows more energy to be taken from the surroundings and the temperature to drop further. The melting process results in the formation of a saltwater solution, which is a change in the phase of matter. The salt dissolves in the liquid water, which decreases the freezing point and allows the liquid water to exist at a temperature below 0 °C.

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The traits that the offspring got were taken from the parents.

Offspring get traits from their parents through the process of inheritance. Traits are determined by genes, which are segments of DNA that contain the instructions for building and maintaining an organism's body and traits.

Each parent contributes half of their genes to their offspring through their gametes, which are reproductive cells such as sperm and eggs. When a sperm fertilizes an egg, the resulting zygote has a complete set of genes from both parents.

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Answer:

OB four places to the left. im just writing random stuff so i can post this answer hope you dont mund

The time required for NOCl to decay from 0.0194 M to 0.0026 M, based on the second-order decomposition reaction with a rate constant of 15.4 atm⁻¹s⁻¹ at 450 K, is approximately 5,181 seconds (s).

For a second-order reaction, the rate law is given by the equation:

Rate = k[A]²

In this case, the reaction is the decomposition of NOCl, so the rate law can be written as,

Rate = k[NOCl]²

We can rearrange the rate law equation to solve for time,

t = 1/(k[NOCl]₀) - 1 / (k[NOCl]t)

Given the initial concentration [NOCl]₀ = 0.0194 M and the final concentration [NOCl]t = 0.0026 M, and the rate constant k = 15.4 atm⁻¹s⁻¹, we can substitute these values into the equation,

t = 1 / (15.4 × 0.0194) - 1/(15.4 × 0.0026)

t ≈ 5181 s

Therefore, the time required for NOCl to decay from 0.0194 M to 0.0026 M, considering the given rate constant and reaction conditions, is approximately 5,181 seconds.

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Complete question - How much time (in s) is needed for NOCl originally at a concentration of 0.0194 M to decay to 0.0026 M?

Consider the second-order decomposition of nitroysl chloride:

2NOCl(g) → 2NO(g) + Cl₂(g)

At 450 K the rate constant is 15.4 atm⁻¹s⁻¹.

Iron has the ability to dissolve carbon in solution both when it is in the form of austenite (the elevated temperature phase) and when it is in the form of ferrite at room temperature, but the relative ability differs. When in the form of austenite, the solubility of carbon is higher than when it is in the form of ferrite at room temperature.

This is due to the fact that austenite has a face-centered cubic structure, which allows for a greater number of carbon atoms to be accommodated within the lattice. Ferrite, on the other hand, has a body-centered cubic structure, which has less space for carbon atoms in the lattice.

Austenite can hold up to 2.11% carbon by weight, while ferrite can only hold up to 0.022% carbon by weight. This difference in solubility is why the transformation of austenite to ferrite during the cooling of steel results in the precipitation of iron carbide.

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Answer:

it will have a net negative charge and it is known as anion

Answer:

Endothermic is identified if the process requires heat as a reactant, since endothermic means "intake of heat", so it has to take in some type of heat.

The proton NMR spectrum of 4 isopropyl benzonitrile will have 3 signals for non-equivalent types of protons.

What are identical and incompatible protons?

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Answer:

Alex forgot to get a flu shot and missed two weeks of school

Answer:

\(d.blood\)

Explanation:

Hope it helps!!!

Answer:

livermorium

Explanation:

The atom with the largest number of neutrons is a tie between livermorium and tennessine. Each of these atoms contain 177 neutrons.