What is the purpose of an indicator in a titration.

The benzoic acid Collect the top layer dry with Na2SO4 and evaporate the solvent.

Benzoic acid is sparingly soluble in water and forms a precipitate. The benzoic acid can then be separated by suction filtration through a Buchner funnel. Washing with sodium bicarbonate converts the benzoic acid to the more water-soluble form of sodium benzoate, which is extracted into the aqueous layer. Additionally, sodium bicarbonate neutralizes the catalytic acid in this reaction.

Benzoic acid containing the naphthalene impurity can be purified by crystallization in water. The reaction between benzoic acid and NaOH is an acid-base neutralization reaction. An acid reacts with a base to form salt and water. In aqueous solutions, NaOH increases the solubility of benzoic acid. Benzoic acid cannot move from one layer to another because ethanol is immiscible with water.

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Genetic diversity is produced by sexual reproduction, which gives a population a variety of appearances. The following paragraph contains the necessary information regarding genetic diversity.

It is possible for organisms to adapt to changing environmental conditions and prevent inbreeding by maintaining significant genetic variety. When there are limited, isolated populations, inbreeding takes place, which might make a species less able to endure and procreate.

Genetic diversity is the range of different hereditary traits within a species. There would be several people with a wide range of diverse traits in such a species with significant genetic diversity. For a community to adapt to shifting surroundings, genetic variety is essential.

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Answer:

Cu

Copper is a chemical element with the symbol Cu and atomic number 29.

...

7.1Element Forms.

Explanation:

Answer:

Hey mate.....

Explanation:

This is ur answer.....

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The correct sequence of steps for the preparation of a pure sample of copper(II) sulfate crystals from copper(II) oxide and sulfuric acid is dissolving → evaporation filtration → crystallization.

what is crystallization?

When atoms or molecules are tightly ordered into a structure known as a crystal, a solid is said to have crystallized.

Explanation:

The crystalline form is the most pure form of any material, hence any extraction that yields the component in this form is a pure sample.

The following methods will result in copper(II) sulfate crystals from copper(II) oxide and sulfuric acid:

First, we warm in a water bath after adding sulfuric acid to a beaker.

Then, we add some copper(II) oxide powder to the beaker, and we keep adding until there is an excess.

Then we filter the combination, add the copper(II) sulfate filtrate to an evaporating basin, and heat the solution to make the water in it evaporate by half.

Finally, copper(II) sulfate crystals are obtained by pouring the aforementioned solution into an evaporating basin and letting it sit there until all the water has evaporated.

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Answer:B. The sodium ion has a smaller radius than the atom.

Explanation:

Because size of cation is less than neutral atom

Answer:

The difference between an atom and an ion has to do with net electrical charge. An ion is a particle or collection of particles with a net positive or negative charge. ... A stable atom contains the same number of electrons as protons and no net charge. When electrons are added or removed, the stable atom becomes an ion.Apr 12, 2015

Explanation:

hope this helps ✌️

Answer:

Option A. 1.02g of Fe.

Explanation:

Step 1:

The balanced equation for the reaction.

3Mg + Fe2(SO4)3 —> 3MgSO4 + 2Fe

Step 2:

Determination of the mass Fe2(SO4)3 that reacted and the mass of Fe produced from the balanced equation. This is illustrated below:

Molar Mass of of Fe2(SO4)3 = (2x56) + 3[32 + (16x4)] = 112 + 3[32 + 64] = 112 + 3[96] = 400g/mol

Mass of Fe2(SO4)3 from the balanced equation = 1 x 400 = 400g

Molar Mass of Fe = 56g/mol

Mass of Fe from the balanced equation = 2 x 56 = 112g

From the balanced equation above,

400g of Fe2(SO4)3 reacted to produce 112g Fe.

Step 3:

Determination of the mass of Fe produced by reacting 3.65g of Fe2(SO4)3.

This is illustrated below:

From the balanced equation above,

400g of Fe2(SO4)3 reacted to produce 112g Fe.

Therefore, 3.65g of Fe2(SO4)3 will react to produce = (3.65 x 112)/400 = 1.02g of Fe.

Therefore, 1.02g of Fe is produced from 3.65g of Fe2(SO4)3.

3 is the mass of solid ,The amount of matter in a particle or object is represented by the dimensionless quantity mass (symbolized m).

The amount of matter in a particle or object is represented by the dimensionless quantity mass (symbolized m). The kilogram is the International System's (SI) preferred unit of mass (kg).

Mass is a physical body's total amount of matter. It also serves as a gauge for the body's inertia, or resistance to acceleration (change in velocity) in the presence of a net force. The mass of a thing also affects how strongly it attracts other bodies through gravity.

The amount of matter that makes up every object or body is the greatest way to understand mass. Everything that we can see has mass. Examples of objects with mass include a table, a chair, your bed, a football, a glass, and even air.

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Fractional distillation is the process of distilling crude oil into distinct parts or fractions during the refinement process.

Refining is the process of dividing, removing impurities, and converting raw materials into products that may be used and adhere to strict quality standards.

A physical separation method known as fractional distillation makes use of the various components or fractions of crude oil's different boiling temperatures. The procedure involves vaporizing the crude oil in a fractionating column after it has been heated to a high temperature. Depending on the boiling points of the various components, the vapor cools and condenses at different heights as it ascends the column. The condensed liquids are gathered in various trays, each of which holds a percentage with a particular boiling point range and chemical make-up.

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Strong bases are required for E2 reactions. Alcohols provide an issue since they behave like acids and will react with bases.

Because of this, the majority of elimination reactions employ powerful acids to transform the alcohol into water so that they can function as good leaving groups. There is no trans-2 methyl cyclohexanol, but you are referring to the anti-conformation, and in that visualization the tendency would be toward a one step dehydration from the protonated alcohol and so prevailing an E1 elimination with no carbocation formation. The alcohol, now transformed into water, leaves via an E1 elimination and a double bond is formed. However, the production of a carbocation, its rearrangement, and the appearance of the 1 and 2 methyl cyclohexene tend to make the entire process a two step elimination.

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Answer:expert

Explanation:

Answer:

6

Explanation:

If there are 6 electrons and it has a balanced charge, there also must be six protons.

The intermediate in the given reaction mechanism is O(g) (oxygen atom). Therefore, the correct answer is A) O(g).

In the reaction mechanism provided, O3(g) (ozone), O2(g) (oxygen molecule), and O(g) (oxygen atom) are the reactants. The reaction proceeds through a series of steps, and at some point, an intermediate is formed before the final products are obtained. In this case, the intermediate is O(g), which is an oxygen atom. This intermediate is then involved in further reactions to produce the final products. The other species mentioned in the options (O2(g) and O3(9)) are reactants or products and not the intermediates in this particular reaction mechanism.

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The naming of compound can be obtained by following the IUPAC principle. This is shown below:

For the 1st diagram:

Thus, the IUPAC name for the compound is: 3,3-dimethylpentane

For the 2nd diagram:

Thus, the IUPAC name for the compound is: pentene

For the 3rd diagram:

Thus, the IUPAC name for the compound is: 2,2,3-trimethylhexane

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The first mistake that the student made is drawing the start line with ink. So it will run/dissolve in the solvent / split up

The second mistake that the student made is placing the solvent above the spots or start line instead of under them. So they will mix with solvent or wash off paper or color the solvent or dissolve in the solvent.

In the first mistake, there is no clear, visible starting line for the experiment as the ink flows or dissolves in the solvent. This error can lead to confusion and inaccuracy in results as students cannot accurately measure or compare the progress of their experiments.

The second mistake, it mixes or washes away the solvent with the dirt and starts the line, making it difficult or impossible to observe or measure the progress of the experiment. This error can also lead to inaccuracies in results, as students may not be able to accurately measure or compare the progress of their experiments.

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The main answer to your question is (E) a molecular solid.

A molecular solid is composed of individual molecules held together by intermolecular forces, such as London dispersion forces, dipole-dipole forces, and hydrogen bonding.

These intermolecular forces are not strong enough to allow the substance to conduct electricity in solution or when melted.

Additionally, the low melting point of the substance indicates that the intermolecular forces holding the molecules together are relatively weak.

Summary: The substance is likely a molecular solid, which does not conduct electricity in solution or when melted due to weak intermolecular forces between individual molecules.

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According to the observations, work of scientist uses evidence while work of an engineer uses a practical approach.

Observations are defined as a set of statements or facts which are recorded while conducting an experiment.Observations are made through sensing changes in the variables of the experiment.

It is specifically defined as an act of knowing or recording the changes in the variables of the experiment.Recording observations holds importance as recording observations avoid the experiment to be repeated over and over again.

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Answer:

Your answer will be "Over the ocean"

Explanation:

Have a good day/night

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Answer:
I think it's land or lakes and rivers

Answer:

Explanation: I did the work online because I just worked on this.

Answer:

No

Explanation:

You can not have a reaction that produces "no mass". This breaks the law of conservation of mass. When gasses are produced, they will have a specific amount of mass associated with them which means they will have a weight. They will have to be accounted for

The compound with the largest dipole moment in the gas phase among the given options (KF, O2, HF, ClF, and CBr4) is hydrogen fluoride (HF). HF is a polar molecule with a significant difference in electronegativity between the hydrogen and fluorine atoms, resulting in a strong dipole moment. The other compounds either have smaller dipole moments (ClF, KF) or are nonpolar with no net dipole moment (O2, CBr4).

In the gas phase, the compound with the largest dipole moment is HF. This is because HF has a large electronegativity difference between the hydrogen and fluorine atoms, resulting in a polar covalent bond. This polar bond creates a dipole moment, which is the measure of the separation of positive and negative charges in a molecule. In contrast, KF and O2 are nonpolar molecules, so they have a dipole moment of zero. ClF and CBr4 have polar bonds, but their dipole moments are smaller than that of HF due to the smaller electronegativity difference between the atoms in these compounds. In 100 words, HF has the largest dipole moment in the gas phase due to its highly polar covalent bond.
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The total mass of the reactants is 160.12x grams.

To calculate the total masses of the reactants for the given equation, let's rewrite the chemical formulas with subscripts:

To calculate the total masses of the reactants for the given equation, we need to consider the molar masses of sulfur dioxide (SO₂) and oxygen (O₂), as well as the stoichiometry of the balanced equation.

The molar masses are:

Molar mass of SO₂ = 64.06 g/mol

Molar mass of O₂ = 32.00 g/mol

According to the balanced equation:

2SO₂(g) + O₂ → 2SO₃(g)

The stoichiometric coefficients indicate that the ratio of SO₂ to O₂ is 2:1.

To calculate the total masses, we can use the following equation:

Total mass of reactants = (Number of moles of SO₂ × Molar mass of SO₂) + (Number of moles of O₂ × Molar mass of O₂)

Since the stoichiometric ratio is 2:1, we can assume the number of moles of SO₂ is twice the number of moles of O₂.

Let's assume the number of moles of O₂ is "x" mol.

Number of moles of SO₂ = 2x mol

Total mass of reactants = (2x mol × 64.06 g/mol) + (x mol × 32.00 g/mol)

Total mass of reactants = 128.12x g + 32.00x g

Total mass of reactants = 160.12x g

Therefore, the total mass of the reactants is 160.12x grams.

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Answer:

4 covalent bonds

Explanation:

Answer:

Chemistry, Biology, Medicine, Physics, and Geology

Answer:

Where SiO2 has strong covalent bonds between molecules, SO3 only has weak van der waals intermolecular forces holding its molecules together. Since covalent bonds require more energy to overcome than van der waals, SiO2 requires a higher temperature than SO3 to melt, thus SiO2 has a higher melting point.

Given data:H2O vapor content: 13 gramsH2O vapor capacity: 52 grams at 25 degrees Celsius 13 grams at 10∘C52 grams at 30∘CFormula used to find the dew point:$$\dfrac{13}{52}=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$$$\frac{1}{4}=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$

Where A is the constantDew Point:It is the temperature at which air becomes saturated with water vapor when the temperature drops to a point where dew, frost or ice forms. To solve this question, substitute the given data into the formula.$$13/52=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$$$13(17.27-A)=3\pi A(ln100)$$By simplifying the above expression, we get$$A^2-17.27A+64.78=0$$Using the quadratic formula, we get$$A=9.9,7.4$$

The dew point is 7.4 since it is less than 10°C.More than 100:The term "More than 100" has not been used in the question provided.

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