why does water boil at a higher temperature than butter, which is non-polar? question 1 options: breaking of hydrogen bonds requires a lot of energy removing hydrogen from the liquid requires a lot of enegy energy is used to cool the water as it undergoes from liquid to gas energy is consumed to form hydrogen bond

We would need about 30 grams

Solubility is the ability of a substance, called the solute, to dissolve in a solvent to form a homogeneous mixture called a solution. The solubility of a substance is typically expressed as the maximum amount of the solute that can dissolve in a given amount of the solvent at a specified temperature and pressure.

The solubility of KCl at 80 degrees Celsius is 50g/100gH2O

As such we would need about 30 grams

Solubility is an important concept in many fields of science, including chemistry, biochemistry, and environmental science.

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Answer:

It is a Physical change.

Explanation:

To summarize, making popcorn results in major changes to the physical shape, and the release of water, but there is no major change in chemical composition. It is no secret how to get the most popped corn from your kernels; you need just the right amount of water in the endosperm and a robust pericarp.

We can see that popping popcorn is a physical change rather than a chemical change.

A physical change involves a change in the physical properties of a substance without altering its chemical composition or identity. In the case of popping popcorn, the process involves the conversion of the hard kernel into a light and fluffy popcorn, but there is no alteration in the chemical composition of the popcorn itself.

The chemical structure of the starches and other components in the popcorn remains the same before and after popping.

A chemical change, also known as a chemical reaction, refers to a process in which one or more substances undergo a transformation, resulting in the formation of new substances with different chemical properties.

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Answer:

6 Cl atoms

Explanation:

In one molecule of ZnCl2, we have 2 atoms of Cl

Therefore, in 3 molecules of ZnCl2, we'll have 3(2) atoms of Cl = 6 atoms of Cl.

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The concentration of NaOH in the given solution is 0.3 M.

The first step is to calculate the amount of moles of HBr present in the 90 mL solution using the formula Moles = Concentration x Volume. Moles of HBr would be:

Moles of HBr = 0.2 x (90/1000) = 0.018 moles

Since HBr is neutralized by NaOH, the number of moles of NaOH would be equal to the number of moles of HBr. Therefore, we can use the number of moles of HBr to calculate the concentration of NaOH as follows:

Moles of NaOH = 0.018 moles

Concentration of NaOH = Moles of NaOH/Volume of NaOH

Concentration of NaOH = 0.018/0.06 = 0.3 M

Therefore, the concentration of NaOH in the given solution is 0.3 M.

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At 53 kpa pressure, the boiling point of water is approximately 88°C.

Atmospheric pressure affects the boiling point of water. This phenomenon is known as the boiling point elevation. At the peak of the mountain, the atmospheric pressure is 53 kpa, which is lower than the standard atmospheric pressure of 101.3 kpa at sea level.

This lower pressure causes the boiling point of water to decrease from 100°C to approximately 88°C. The boiling point elevation is the difference between the boiling point of water at the given pressure and the boiling point of water at the standard atmospheric pressure.

This decrease in the boiling point of water is directly proportional to the decrease in atmospheric pressure. Therefore, when the atmospheric pressure is decreased, the boiling point of water is also decreased.

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Complete question:

At the peak of a particular mountain, atmospheric pressure is 53 kpa. at approximately what temperature will water boil in this location?

If a given block of metal has a known mass of 110.2 g, and the mass is measured three times to get the following readings -100.2 g, 100.1 g, 100.3 g, then the average mass will be 100.2 g.

Mass is a quantity which is dimensionless. It represents amount of matter in any object. Average mass is known as the total sum of given masses divided by the number of times mass is measured.

Mathematically, average is the sum of all results in a sample divided by the total number of the items in sample.

     Average mass =   Sum of all the mass  

                                  Number of results(mass)

Therefore,

Average mass = (100.2 + 100.1 + 100.3) g

                                             3

Average mass = 300.6 g

                               3

Average mass = 100.2 g

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Answer: Dinitrogen trioxide

Explanation:

The process of slowly adding a solution to react with another solution and determining the concentration of one of the solutions based on the reaction between the two is titration.

Titration is one way to determine the concentration of a solution of a substance by reacting the solution with a substance whose concentration is known precisely. The basic principle of acid-base titration is based on the neutralization of acid-base reactions.

The equivalence point in an acid-base titration is the point at which some acid is neutralized by some base. During the titration, there is a change in pH.

The equivalence point is determined by the number of salts resulting from acid-base neutralization. The indicators used in acid-base titrations are those that have a pH range where the equivalence point is. In general, the equivalence point is difficult to observe, what is easy to observe is the endpoint that can occur before or after the equivalence point is reached.

The titration must be stopped when the end point of the titration is reached which is marked by a change in the color of the indicator. The endpoint of the titration does not always coincide with the equivalence point.

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According to the question the reaction A+B→C+D is exothermic.

Reaction in chemistry is a process in which two or more substances interact to form a new substance. Chemical reactions involve the breaking of chemical bonds and the formation of new bonds. Chemical reactions are essential for the formation and breaking of molecules, and are responsible for the production of energy.

a) The reaction A+B→C+D is exothermic.

b) The AH for the forward reaction is the difference between the enthalpies of the products and the reactants. The AH for the backward reaction is the difference between the enthalpies of the reactants and the products.

c) X would represent the position of the activated complex on the graph.

d) The activation energy for the forward reaction is the difference between the enthalpies of the reactants and the activated complex. The activation energy for the backward reaction is the difference between the enthalpies of the products and the activated complex. The forward reaction is expected to be faster because it has a lower activation energy.

e) On the same set of axes, the graph would show a decrease in the activation energy with the use of a catalyst, resulting in a lower energy barrier and faster reaction rates.

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Taking into account the definition of net ionic equation, the net ionic equation is:

SO²⁻(aq) + Ca²⁺(aq) → CaSO₄(s)

The net ionic equation is a chemical equation for a reaction that lists only the species that participate in the reaction.

In other words, an ionic equation is a chemical equation where electrolytes in aqueous solution are written as dissociated ions.

The balanced equation will be:

Na₂SO₄(aq) + CaCl₂(aq) → CaSO₄(s) + 2 NaCl(aq)

where (aq) means aqueous and (s) solid.

Taking into account that:

The total ionic equation in separated aqueous solution will be:

2 Na⁺(aq) + SO²⁻(aq) + Ca²⁺(aq) + 2 Cl⁻(aq) → CaSO₄(s) + 2 Na⁺(aq) + 2 Cl⁻(aq)

A spectator ion is an ion that appears both as a reactant and as a product in an ionic equation.

Spectator ions can be either cations (positively charged ions) or anions (negatively charged ions).

When writing a net ionic equation, spectator ions found in the original equation are ignored. Thus, the total ionic reaction is different from the net chemical reaction.

In this case, Na⁺ and Cl⁻ are the spectator ions because they appear unchanged in both the product and the reagent. So these ions cancel out by writing the net ionic equation and you get:

SO²⁻(aq) + Ca²⁺(aq) → CaSO₄(s)

In summary, the net ionic equation is:

SO²⁻(aq) + Ca²⁺(aq) → CaSO₄(s)

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Explanation:

answer is in photo above

The heat required to raise the temperature of 8.75 g of water from its melting point to its boiling points is 3.662 kJ.

The amount of heat required to increase the temperature of one gram of a material by one degree Celsius (°C) is defined as specific heat.

The equation q = mcΔt can be used to compute the amount of heat acquired or lost by a specific heat (q), where m is the mass of the sample, c is the specific heat, and Δt is the temperature change.

Given:

m = 8.75

c = 4.186 J/g°C

The melting point and boiling point of water is 0° and 100° respectively.

Δt = 100° - 0° = 100°

We know that,

q = mcΔt

  = 8.75(4.186)100

  = 3.662 kJ

Thus, the heat required to raise the temperature of 8.75 g of water from its melting point to its boiling points is 3.662 kJ.

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Answer:

B

Explanation:

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Answer:

Yes the correct answer is B

Explanation:

Have a good day!!!

Answer:

B

Explanation:

The muscular and nervous systems enable the involuntary breathing mechanism. The main muscles in inhalation and exhalation are the diaphragm and the intercostals (shown in blue), as well as other muscles. Exhalation is a passive action, as the lungs recoil and shrink when the muscles relax.

The value of the cell potential of the reaction at the 298 K is − 0.121 V.

The concentration of the reactant, Hg²⁺ = 9.00 × 10⁻⁵ M.

The concentration of the product, Hg²⁺ = 1.09 M.

The half cell oxidation of the reactions, the value of E° anode is the 0.85 V

The half cell reduction reactions, the value of E° cathode is the -0.85 V.

E°cell = E° cathode - E° anode

E° cell = 0 V.

The cell potential is as :

E cell = E°cell - (0.0591 / n) log (Hg²⁺)/(Hg²⁺)

E cell = 0 - (0.0591 / 2) log (1.09) / (9.00 × 10⁻⁵)

E cell = - 0.121 V.

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Bond formation is the way in which atoms interact to form compounds.

Bond formation is the way in which atoms interact to form compounds. The following are the kind of bonds formed by the atoms;

C and AI - ionic bond

N and P - covalent bond

N and O - covalent bond

The bonds in each of the lattices are;

CuO - ionic bond

Hg - metallic bond

P2O5 - covalent bond

P - covalent bond

CaCl2 - ionic bond

The following is a depiction of the processes shown;

Na0 →Na+1 - oxidation

P0→P+5  - oxidation

AI+3 → AI0 - reduction

The balanced reaction equations are;

2H2O + F2 → 2HF + O2

SO2 + 3H2 → H2S + 2H2O

2H2SO4 + C → 2SO2+CO2+2H2O

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The species which  is oxidized in the voltaic cell is Li. The voltaic cell functions due to the transfer of electrons from Li to Au^3+ ions, which results in the oxidation of Li and the reduction of Au^3+ to Au.

In a voltaic cell, chemical reactions occur to generate electricity. In this particular voltaic cell, the anode is made of lithium (Li) and the cathode is made of gold (Au) in the form of Au^3+ ions. The half-reaction that occurs at the anode is the oxidation of Li to Li+ ions, while at the cathode, the reduction of Au^3+ ions to Au occurs.
During oxidation, electrons are lost by the species being oxidized. In this case, lithium loses an electron and becomes a positively charged ion (Li+). Therefore, lithium is the species that is being oxidized in the voltaic cell.
The reduction of Au^3+ ions to Au involves a gain of electrons. The electrons generated from the oxidation of Li at the anode are transferred to the cathode where they are used for the reduction of Au^3+ ions to Au. This reduction reaction allows for the flow of electrons from the anode to the cathode, generating electricity.

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Answer:

Glue is made up of - combination of polyvinyl acetate (PVA), water, ethanol, acetone and other substances. The animal remains that are the raw materials for glue may include ears, tails, scraps of hide or skin, scrapings from the fleshy sides of hides, tendons, bones and collagen taken from animal parts, particularly horse hooves and bones.

Explanation:

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Answer:

Synthetic glues and adhesives are made from polyvinyl acetate, water, ethanol, acetone and some other substances. The water is used to modify the glue's consistency while the other substances are used to control the drying rate of the glue.

Answer:

3.38  Tablespoons

10.14 Teaspoons

0.21 U.S. Cups

0.18 Imperial Cups

0.20 Metric Cups

50.00 Milliliters

Explanation:

The R was found to be = 0.6711 L atm/mol.K

The percent error was found to be =18.22 %

The three elements that form magnesium a metal are as follows: It effectively conducts electricity. An electropositive element is magnesium. Magnesium has a relatively low ionization enthalpy.

In the crust of the planet, magnesium is the seventh most prevalent element. It is found in huge amounts as magnesite, dolomite, and other minerals but does not naturally occur uncombined.

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Answer: The property that cesium most likely would have is being ductile (able to be deformed without losing toughness) due it being a very soft, alkali metal which has a very low melting point of 83.3 °F or 28.5 °C

Answer:

The answer is B. Ductile.

Explanation: Cesium belongs to a category of metals. They are often silver, fairly soft, and very ductile. The answer is right on edge 2020.

The direction of equilibrium shift upon addition of a new ionic compound depends on the nature of the compound being added and the equilibrium constant (K) of the reaction. Le Chatelier's principle is a useful tool to predict the direction of equilibrium shift.

If an ionic compound is added to a reaction mixture, it will dissociate into its respective ions. If the added ions are the same as the ones present in the reaction, they will not affect the equilibrium position. However, if the added ions are different, they can affect the equilibrium position by increasing or decreasing the concentration of one or more reactants or products.

If a new compound is added to a reaction, and it contains an ion that is common to one side of the equilibrium, then the equilibrium will shift towards the opposite side. If the added compound contains an ion that is unique to one side of the equilibrium, then the equilibrium will shift towards that side.

Additionally, if the added compound reacts with one of the reactants or products to form a new compound, the equilibrium will shift to restore the original concentrations of the reactants and products. The extent of the shift will depend on the relative magnitudes of the equilibrium constants of the original and new reactions.

Overall, the direction of equilibrium shift upon addition of a new ionic compound is dependent on the specific conditions of the reaction, and can be predicted using Le Chatelier's principle.

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1. The volume of the metal ball is 33.49 cm³

2. The density of the metal ball is 7.99 g/cm³

3. The metal ball is iron

We can obtain the identity of the metal by doing the following:

1. Determine the volume

The volume of the metal ball can be obtain as follow:

V = 4/3πr³

V = (4/3) × 3.14 × 2³

Volume = 33.49 cm³

2. Determine the density

The density can be obtain as follow:

Density = mass / volume

Density of metal ball = 267.4794 / 33.49

Density of metal ball = 7.99 g/cm³

3. Determine the identity

From the above, we can see that the density of metal ball is 7.99 g/cm³.

Thus, the metal ball is iron

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Answer:

18.89 g of Al₂O₃.

Explanation:

The balanced equation for the reaction is given below:

4Al + 3O₂ —> 2Al₂O₃

Next, we shall determine the masses of Al and O₂ that reacted and the mass of Al₂O₃ produced from the balanced equation. This can be obtained as follow:

Molar mass of Al = 27 g/mol

Mass of Al from the balanced equation = 4 × 27 = 108 g

Molar mass of O₂ = 16 × 2 = 32 g/mol

Mass of O₂ from the balanced = 3 × 32

= 96 g

Molar mass of Al₂O₃ = (27×2) + (16×3)

= 54 + 48

= 102 g/mol

Mass of Al₂O₃ from the balanced equation = 2 × 102 = 204 g

SUMMARY:

From the balanced equation above,

108 g of Al reacted with 96 g of O₂ to produce 204 g of Al₂O₃.

Next, we shall determine the limiting reactant. This can be obtained as follow:

From the balanced equation above,

108 g of Al reacted with 96 g of O₂.

Therefore, 10 g of Al will react with

= (10 × 96)/108 = 8.89 g of O₂.

From the calculation made above, we can see clearly that only 8.89 g out of 19 g of O₂ given, reacted completely with 10 g of Al.

Therefore, Al is the limiting reactant and O₂ is the excess reactant.

Finally, we shall determine the mass of aluminium oxide, Al₂O₃, produced from the reaction.

NOTE: in this case, the limiting reactant will be used because it will give the maximum mass of the aluminium oxide, Al₂O₃ as all of it is consumed in the reaction.

Al is the limiting reactant and the mass of aluminium oxide, Al₂O₃ produced can be obtained as follow:

From the balanced equation above,

108 g of Al reacted to produce 204 g of Al₂O₃.

Therefore, 10 g of Al will react to produce = (10 × 204)/108 = 18.89 g of Al₂O₃.

Thus, 18.89 g of Al₂O₃ were obtained from the reaction.

Answer:

A. hydrolysis reaction.

Explanation:

Chemical Reactions.

First, let's review each concept of the group of answer choices:

- hydrolysis: is a reaction in which the net reaction is an organic compound reacting with water to give either two molar equivalents of a single product or more than one product.

- redox: is a type of chemical reaction that involves a transfer of electrons between two species.

- combustion: is a reaction in which a substance reacts with oxygen gas, releasing energy in the form of light and heat.

- neutralization: is a reaction that occurs when an acid and a base react to form water and a salt and involves the combination of H+ ions and OH- ions to generate water.

The problem is asking for the reaction that removes a phosphate group from ATP, so let's see the structure of ATP with one phosphate group:

What is enclosed in the red box is the phosphate group.

The reaction that removes this phosphate group represents a rupture of the structure and based on the logic of the definitions of the given concepts, the answer would be that the reaction to remove one phosphate group from ATP is A. hydrolysis reaction. This reaction looks like this:

ATP + water (H2O) -> ADP + Pi,

where ADP is the same molecule of ATP but it has two phosphate groups and Pi is the phosphate group removed.

The following statements on HPLC modes are true is more polar compounds elute first in normal-phase HPLC (Option E).

The liquid chromatography (HPLC) is a technique in analytical chemistry employed for the separation, identification, and quantification of elements. It is considered a highly sensitive method, and it works by separating the components in a mixture with the assistance of a solvent under high pressure.

There are two modes of HPLC: Reversed-Phase HPLC (RP-HPLC) and Normal-Phase HPLC (NP-HPLC). In RP-HPLC, a nonpolar stationary phase, such as C18, is used, and polar solvents, such as water, are used as mobile phases. Polar stationary phases, such as silica gel, are used in NP-HPLC, while nonpolar solvents, such as hexane, are used as mobile phases.

More polar compounds have a greater affinity for the polar stationary phase than less polar compounds, which have a higher affinity for the nonpolar mobile phase in NP-HPLC. As a result, less polar compounds elute first in normal-phase HPLC.

Thus, the correct option is E.

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Answer:

One way to predict the type of bond that forms between two elements is to compare the electronegativities of the elements. In general, large differences in electronegativity result in ionic bonds, while smaller differences result in covalent bonds. the bonding is covalent bcz its between the most electronegative atom nitrogen and carbon .

Since the electronegativity difference between nitrogen and chlorine is not very much so chemical bonding is the only bond between them Thus the name of  N2C14 is Dinitrogen Tetrachloride and there is covalent bonding in this compound

There are two types of bonding in chemistry, one is ionic bonding while other is covalent bonding. Ionic bonding is due to the complete transfer of electron from one  element to other. While the covalent bond is due to the equal sharing of electron by each element

Metals and non metals combine to form ionic bond while the element with the same electronegativity form covalent bonding.

To name this we have to see the number of element and accordingly use di, tri and the write the name of first element and then second element's name with ide

Thus the name of  N2C14 is Dinitrogen Tetrachloride and there is covalent bonding in this compound

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Answer:

iron+flourine.............iron flouride

Fe+F2.............FeF3

the above reaction is not balanced

now to balance this reaction

2Fe+3F2...........2FeF3

now this reaction is balanced

The balanced equation is: 2Fe + 3F2 ⇒ 2FeF3

A chemical equation needs to be balanced if you want to make the wide variety of the atoms of the reactants equal to the variety of the atoms of the goods.

Given,

Iron + fluorine ⇒ Iron Flouride

Fe + F2 ⇒ FeF3

Now to balance this reaction:

2Fe + 3F2  ⇒ 2FeF3

This reaction is balanced.

This medicine is a mixture manufactured from nutrients, iron, and fluoride. it's miles utilized in infants and youngsters to deal with or prevent deficiency because of terrible weight loss programs or low tiers of fluoride in drinking water and other sources.

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