Titanium oxide is often added to food to color it white. If a jelly bean contains approximately 7. 69x10 18 formula units of TiO​2,​ how many moles of TiO​2​ are in a jelly bean?

Answers

Answer 1

0.0000128 mole TiO2 in a jelly bean.Any chemical molecule, whether created chemically or naturally, that exclusively contains the elements titanium and oxygen is referred to as titanium oxide.

With the chemical formula TiO2, titanium dioxide, sometimes referred to as titanium(IV) oxide, is an inorganic substance. It is also known as titanium white, Pigment White 6 (PW6), or CI 77891 when used as a pigment.

Step 1: Given data

Number of moles of titanium (IV) oxide in 1 jelly bean (n):7. 69x10^( 18)

Step 2: Calculate the mass (in grams) corresponding to 7. 69x10^( 18) moles of TiO₂

To convert moles to mass, we need a conversion factor. In this case, it is the molar mass of TiO₂: 79.87 g/mol.

7. 69x10^( 18) mol TiO₂ × 79.87 g TiO₂/1 mol TiO₂

= 1.64*10^(20)g TiO₂

when mass is reversely converted to moles then the moles:0.0000128 mole TiO2.

Although mineral forms might seem black, it is a solid that is insoluble in water and is white in colour. It may be used as a pigment in a variety of products, such as paint, sunscreen, and food colouring. Its E number for usage as food colouring is E171.

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Related Questions

150. 0 mL of oxygen is collected over water at 19. 0oC and 100. 0 kPa. If the dry volume becomes 100. 0 mL and the pressure of the dry gas becomes 105. 0 kPa, what will the new temperature be?

Answers

The new temperature be when 150.0 mL of oxygen is 68.6oC collected over water at 19.0oC and 100.0kPa and dry volume becomes 100.0 mL and the pressure of the dry gas becomes 105.0kPa

Given temperature of oxygen (T1) = 19.0oC = 273 + 19 = 292K

The volume of oxygen collected (V1) = 150mL

The pressure of oxygen (P1) = 100kPa

The pressure of dry gas becomes (P2) = 105kPa

The volume of dry gas becomes (V2) = 100mL

The new temperature is = T2

From Gas Laws we know that PV = nRT such that

P1V1/T1 = P2V2/T2

Then T2 = P2V2T1/P1V1

T2 = 105 x 100 x 292 / 100 x 150 = 204.4K = 68.6oC

Such that the new temperature obtained is 68.6oC

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Which statement describes energy in a nuclear reaction?

- energy is destroyed as the nucleus of an atom breaks down

- energy is released from the nucleus of an atom


- energy is created from the nucleus of the atom


- nuclear reactions absorb energy, but do not release energy

Answers

"energy is created from the nucleus of the atom" describes energy in a nuclear reaction.

What is nuclear reaction?

Nuclear reaction, a change in the identity or properties of an atomic nucleus caused by the bombardment of an energetic particle. The particle that is bombarding may be an alpha particle, a gamma-ray photon, a neutron, a proton, or a heavy ion. Nuclear reactions are collisions between two atomic nuclei or one atomic nucleus and a subatomic particle that produce one or more nuclides. Nuclear reactions produce nuclides that are distinct from the reacting nuclei (commonly referred to as the parent nuclei).

Here,

The phrase "energy is created from the nucleus of the atom" describes the generation of energy in a nuclear reaction.

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an arctic weather balloon is filled with 24.6l of helium gas inside a prep shed. the temperature inside the shed is 7 degrees celsius. the balloon is then taken outside, where the temperature is 7 degrees celsius. calculate the new volume of the balloon. you may assume the pressure on the balloon stays constant at exactly 1 atm. round your answer to 3 significant digits.

Answers

The balloon's new volume is 24.6L. An arctic weather balloon being inflated using 24.6 litres of helium gas in a prep shed. The shed is seven degrees Celsius inside.

When the balloon is hauled outside, it is seven degrees Celsius outside. Any three-dimensional solid's volume is equal to how much room it occupies. One of these solids can be a cube, a cuboid, a cone, a cylinder, or a sphere. Chemical compounds are composed of a large number of comparable molecules (or molecular entities), which are composed of atoms from various elements bonded together by chemical bonds. Because of this, a molecule composed of atoms from a single element is not a compound.

v1/t1 = v2/t2

24.6/7 = v2/7

v2 = 24.6L

v1 = v2

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a solution is made by dissolving 13.7 g of hcl in 643 ml of water. calculate the ph of the solution. (assume that the volume remains constant.)

Answers

The pH of a solution made by dissolving 13.7 g of HCl in 643 ml of water is 2.23.

The pH of a solution made by dissolving 13.7 g of hydrochloric acid (HCl) in 643 ml of water can be calculated using the following steps:

1. Calculate the molarity of the solution. This is done by dividing the amount of HCl (13.7 g) by the molar mass of HCl (36.46 g/mol), which gives us 0.376 mol of HCl. Then, divide this number by the volume of the solution (643 ml), which gives us a molarity of 0.00587 mol/L.

2. Calculate the pH of the solution. This is done by using the expression pH = -log[H+], where [H+] is the concentration of hydrogen ions in the solution. Taking the negative logarithm of 0.00587 mol/L gives us a pH of 2.23.

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what significance does the slight overlap of the van der waals surfaces have with respect to the structural relationships of the catalytic triad residues?

Answers

The slight overlap of the Van der Waals surfaces between the catalytic triad residues is important for the structural relationships of the residues, allowing for proper positioning and orientation. It also helps to stabilize the transition state of the enzyme-catalyzed reaction which is crucial for the catalytic activity of the enzyme

The slight overlap of the Van der Waals surfaces is also known as the Van der Waals interaction. It is important for the structural relationships of the catalytic triad residues in enzymes.

Enzymes are biological catalysts that speed up chemical reactions in cells. A common feature of enzymes is the presence of a catalytic triad, which is a group of three amino acid residues that are critical for the enzyme's catalytic activity. The catalytic triad residues are typically composed of a nucleophile, a base, and an acid/proton acceptor.

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According to Figure 2, the maximum positive value of

Vs was approximately:

A. 125 V.

B. 200 V.

C. 250 V.

D. 275 V.

Answers

According to Figure 2, the maximum positive value of Vs was approximately: 250 V.figure was attached below.Vs means valence.

The power supply voltage, Vs, and the circuit current, I, are monitored throughout a 20 msec time span in Figure 2. The dashed line denotes the voltage Vs. We must identify the peak or crest of the dashed curve in order to get the highest positive value of Vs. This highest point on the graph corresponds to either 0.25 amps or 250 volts.Maximum elemental valence. The data from the list of the elements' oxidation states is used to calculate the elements' maximum valences. Maximum positive acceleration occurs when the slope of the velocity-time curve is greatest, at t=3s, and is around (6m/s-2m/s)/(4s2s)=2m/s 2 (the slope of the graph). (c) When the slope of the velocity-time graph is zero, which happens at t=6s and also for t>10s, the acceleration a=0.

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describe the main idea of this lab. in other words, what was the message this lab conveys about pollution?

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Pollution refers the release of hazardous pollutants into the environment. These hazardous elements are referred to as contaminants. Pollutants may be naturally occurring, such as volcanic ash.

They may also be caused by human activities, such as factory runoff or waste. Pollutants have a negative impact on the quality of the air, water, as well as land.

Pollution refers the release of hazardous pollutants into the environment. These hazardous elements are referred to as contaminants. Pollutants may be naturally occurring, such as volcanic ash. They may also be caused by human activities, such as factory runoff or waste. Pollutants have a negative impact on the quality of both the air, water, as well as land.

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a reaction occurs when nitric acid (hno3) is mixed with an aqueous solution of potassium hydrogen carbonate. aqueous potassium nitrate is produced. write the chemical and net ionic equations for the reaction.

Answers

The net ionic equation for the reaction is:

H+(aq) + CO3^2-(aq) → NO3^-(aq) + H2O(l) + CO2(g)

What is the property of the given reaction?

The given reaction is acid-base neutralization, where HNO3 (nitric acid) acts as the acid, and KHCO3 (potassium hydrogen carbonate) acts as the base. The H+ ion from HNO3 reacts with the CO3^2- ion from KHCO3 to form H2O (water) and CO2 (carbon dioxide) as products. The remaining ions combine to form KNO3 (potassium nitrate) as the main product.

What is KHCO3?

KHCO3 is Potassium bicarbonate. It is a white, crystalline, slightly alkaline and salty substance. It is created by the passage of carbon dioxide through an aqueous potassium carbonate solution. It is used in medicine as an antacid.

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the radius of a strontium atom is 215 pm. how many strontium atoms would have to be laid side by side to span a distance of 3.46 mm

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The radius of the strontium atom is 215 pm. The strontium atoms would have to be distance of 3.46 mm is 8.0 × 10⁶ atoms.

The information is given as :

The radius, r = 215 pm = 2.15 × 10⁻¹⁰ m

The distance, d = 3.46 mm = 3.46 ×10⁻³ m

The No. of strontium atoms that  laid side by side is :

n = d / 2 r

n = 3.46 ×10⁻³ m  / (2 × 2.15 × 10⁻¹⁰)

n =  3.46 ×10⁻³ / 4.3  × 10⁻¹⁰  atoms

n = 8.0 × 10⁶ atoms

The number of strontium atoms is 8.0 × 10⁶ atoms.

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a kilocalorie, by definition, is a measure of a. fat in food. b. heat energy. c. nutrients in food. d. sugar and fat in food.

Answers

One kilogram of water requires one kilocalorie of heat energy to increase its temperature by one degree F.

Is 37 degrees Fahrenheit hot or cold?

Your body temperature is usually around 37 °C. You frequently get a fever when your body is 37.8°C or higher. You can feel unsteady, sweaty, or chilly. You can tell whether you have a fever by taking your temperature using a thermometer.

Is Australia hotter than India?

Is India hotter than Australia? India is anticipated to be hotter since it is closer to the equator than Australia. Most of India's interior regions see average temps between 90 and 104 °F. In contrast, Australia's summertime average temperature is 86 °F.

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The reaction 2N2O5→2N2O4+O2 takes place at around room temperature in solvents such as CCl4. The specific rate constant at 293 K is found to be 2. 35×10−4s−1 and at 303 K the specific rate constant is found to be 9. 15×10−4s−1

Answers

the reaction's 2N2O5→2N2O4+O2  frequency factor at 303 K is A = 9.15 x 10^-4 s^-1 *

The specific rate constant (k) of a first-order reaction is given by the equation:

k = A*e^(-Ea/RT)

Where A is the frequency factor, Ea is the activation energy, R is the gas constant and T is the temperature in Kelvin.

Substituting for A:

A = k*e^(Ea/RT)

We know that the specific rate constant at 303 K is 9.15 x 10^-4 s^-1, and we can assume that the activation energy (Ea) and gas constant (R) are constant.

T = 303 K

Plugging in the known values we get

A = 9.15 x 10^-4 s^-1 * e^(Ea/R*303)

The frequency factor, A, is a measure of the number of collisions of reactant molecules per unit of time that have sufficient energy to overcome the activation energy barrier and form products. The value of A can be used to compare the relative rates of different reactions. The fact that the specific rate constant at 293 K is 2.35 x 10^-4 s^-1 and at 303 K is 9.15 x 10^-4 s^-1, indicates that the reaction rate increases with increasing temperature. This is consistent with the expected behavior of a first-order reaction, as an increase in temperature will increase the kinetic energy of the reactant molecules, making them more likely to collide with each other and form products.

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Search for the complete question is :

In solvents like CCl4, the reaction 2N2O52N2O4+O2 occurs at or near room temperature. At 293 K, the particular rate constant is discovered to be 2.35 104 s1, while at 303 K, it is discovered to be 9.15 104 s1. Determine the reaction's frequency factor at 303 K.



Describe how detergents (e. G. Washing powder) are able to

remove greasy stains from our clothes.

The water in Gothenburg is "soft". What is meant by soft water and why do we need

to use less detergent in soft water areas and more detergent in hard water areas.

Answers

Detergents, such as washing powder, are able to remove greasy stains from clothes by breaking down the grease into smaller, more manageable particles.

Detergents contain molecules with a hydrophobic (water-repelling) end and a hydrophilic (water-attracting) end. When added to water, the hydrophobic ends of the detergent molecules attach to the grease and oil on the clothes, while the hydrophilic ends remain in the water. This causes the grease and oil to be pulled away from the clothes and suspended in the water, making them easier to wash away.

Water is considered "soft" when it contains low levels of dissolved minerals such as calcium and magnesium. Hard water contains high levels of these minerals, which can cause buildup on fixtures and appliances over time. When using detergents in hard water, the minerals in the water can interfere with the detergent's ability to lather and clean effectively, which means that more detergent is needed to achieve the same results. In contrast, soft water does not have this issue and less detergent is needed to achieve the same cleaning power.

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Which of the following are functions of the stomach?

Answers

Answer:

1-Temporarily store food.

2-Contract and relax to mix and break down food.

3-Produce enzymes and other specialized cells to digest food

The stomach is a muscular organ that is found in our upper abdomen. If we were to locate it on our bodies, it can be found on our left side just below the ribs. In simple terms, the stomach is a kind of digestive sac. It is a continuation of the esophagus and receives our churned food from it. Therefore, the stomach serves as a kind of connection between the esophagus and the small intestine, and is a definite pit stop along our alimentary canal. Muscular sphincters, which are similar to valves, allow some separation between these organs. The stomach’s functions benefit from several morphological attributes. The stomach is able to secrete enzymes and acid from its cells, which enables it to perform its digestive functions. With its muscular lining, the stomach is able to engage in peristalsis (in other words, to form the ripples that propel the digested food forward) and in the general “churning” of food. Likewise, the abundant muscular tissue of the stomach has ridges in its linings called rugae. These increase the surface area of the stomach and facilitate its functions.

explain how the crystals of an igneous rock are used to help classify it​

Answers

Igneous rocks are regarded as intrusive, despite the fact that they were essentially created from magma under the earth's surface.

How do you classify igneous rocks?

Due to the diverse chemical composition, size, and structural characteristics of the rocks, igneous rock crystals are created.

Because igneous rock crystals are generated due to various chemical compositions, sizes, and structures, they are used to classify the rock itself. When lava cools and solidifies, igneous rocks are the type of rocks that are created.

Grain size, silica concentration, and silica saturation are used to categorize them. The pace of cooling determines the kind of igneous rock, with slow cooling leading to the construction of large crystals and rapid cooling to the production of microscopic crystals. The chemical makeup of the igneous rocks determines how they are categorized.

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Is H+ + OH- --> H₂O a redox reaction? Explain detailed​

Answers

H and O are in the +1 and -2 oxidation states in H2O H 2 O throughout the aforementioned reaction. In the reactant and product sides of the reaction, oxygen and hydrogen are therefore in the same oxidation state. So, the reaction that is being described is not a redox reaction.

Describe the details of redox reaction?An oxidation-reduction reaction, often known as a redox reaction, is a kind of chemical reaction in which two species exchange electrons. Any chemical reaction in which a molecule, atom, or ion experiences an increase or decrease in its oxidation number due to the gain or loss of an electron is referred to as an oxidation-reduction reaction.This reaction is a redox reaction because oxygen's oxidation status changes in the example.H and O are in the +1 and -2 oxidation states in H2O H 2 O throughout the aforementioned reaction. In the reactant and product sides of the reaction, oxygen and hydrogen are therefore in the same oxidation state. So, the reaction that is being described is not a redox reaction.                  

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If I started with 50grams of a radioactive isotope with a half-life of 25 years, how much of the sample would I have after 50 years?

Answers

Answer: 1

Explanation:

how many moles of vanillin are required to produce one mole of iodovanillin? (record one decimal place with no units or other modifiers.)

Answers

The moles of vanillin are required to produce one mole of iodovanillin is one mole of vanillin.

According to the question the reaction is expressed as :

C₈H₈O₃   +  NaI  +  NaOCl   ---->  C₈H₇IO₃

The vanillin react with sodium iodide and the sodium hypochlorite froms the idovanillin.

The number of moles can be calculated by the formula given below :

The number of moles = mass / molar mass

It is clear from the above balanced equation that :

1 mole of the vanillin required to produce ethe 1 mole of the idovanillin

Thus, the number of moles of the vanillin is one mole to produce the 1 mole of the idovanillin.

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maria is comparing the properties samples of magnesium, calcium, aluminum, and potassium. which metal is more reactive?

Answers

In the case of magnesium, calcium, aluminum, and potassium, potassium is the most reactive metal.

In general, reactivity of a metal increases as you move down a group or a column in the periodic table. The reactivity of a metal is related to the ease with which it loses electrons to form a positive ion, or cation. In the case of magnesium, calcium, aluminum, and potassium, potassium is the most reactive metal. It is located in the first group or column of the periodic table, and has the smallest atomic radius and the most loosely held outermost electrons. This makes it easier for potassium to lose electrons and form a positive ion, making it the most reactive of the four metals mentioned. Aluminum is the next most reactive, followed by calcium and magnesium. Magnesium is the least reactive of the four metals mentioned.

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Use this information to calculate. 25 points

Answers

The Gibbs free energy of reaction is the difference in Gibbs energy of formation of the products and that of the reactants. The ΔGrxn for the given reaction is  -2453 kJ.

What is Gibbs free energy ?

The Gibbs free- energy is the available energy form for a system. The Gibbs free energy change of a reaction is given as follows:

ΔGrxn = ∑ΔGf (products) - ∑ΔGf (reactants)

The Gibbs energy of formation of all the reactants and products are given in the data. Hence, multiply each value with corresponding number of moles and the Gibbs energy of the reaction is given as:

ΔGrxn = (4 ×-394.4 kJ/mol) + (2×-288.57 kj/mol) - (2 × 209.2 kJ/mol)

           =  - 2453 kJ.

Therefore, the ΔGrxn of the given reaction is -2453 kJ.

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a solution is prepared at that is initially in dimethylamine , a weak base with , and in dimethylammonium bromide . calculate the ph of the solution. round your answer to decimal places.

Answers

At this location, a solution is made up of dimethylamine, a weak base, and dimethylammonium bromide. The solution's pH value is 10.96.

Describe base.

a material that can neutralize acids and receive hydrogen ions from water. Bases can color certain colours blue and feel sloppy or soapy upon that skin. Sodium hydroxide is a good illustration of a base.

Which base has the most strength?

Because it totally dissociates into sodium ions as well as hydroxide ions, hydrogen peroxide is the strongest base. Further away from the acid, these strong acids are treated with hydronium ions, totally ionizing the hydrogen ions.

pOH = pKb + log [acid]/[base]

pOH = -log 1.3 × 10⁻³ + log 0.20 M/0.14 M

pOH = 3.04

pH of the solution,

pH + pOH = 14

pH = 14 - pOH

= 14 -3.04

= 10.96

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when a can of coke is taken out of the fridge and warmed up to room temperature, group of answer choices there is not enough information. the entropy of the beverage will increase. the entropy of the beverage will stay the same. the entropy of the beverage will decrease.

Answers

When a can of coke is removed from the fridge and then warmed up to room temperature, the entropy of the beverage will increase.

We can define entropy as the disorderness of a system or the randomness of a particular system. The entropy of a system changes with a change in the temperature of the system.

As the temperature increases, the entropy of the system also increases and when the temperature is reduced, the entropy of the system also decreases. When a can of coke is kept in fridge, the entropy decreases as the temperature gets decreased.

As the can of the coke is taken out and warmed up to room temperature, the entropy increases with the increase in temperature as the randomness of the molecules increases.

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4.aqueous solutions of hydrogen peroxide sold in pharmacies are usually approximately 3% h202 by mass. however, in solution, hydrogen peroxide decomposes into water and oxygen. what is the percent by mass of a solution of hydrogen peroxide, h2o2, prepare from 1.423 g of h202 which is titrated with 40.22 ml of 0.01143 mol/l kmno4(aq). the reaction occurs in an acidified solution (ans:2.747%) (hint: find mass of h202 actually present, then mass %) balanced equation: (aq) 502(9) 8h200 5h2o2(aq) 2mno4 (aq) 6h (aq) 2mn?

Answers

The percent by mass of the solution of H2O2 is 1.6547%, when hydrogen peroxide decomposes into water and oxygen.

How to calculate percent by mass of the solution?

To find the percent by mass of a solution of hydrogen peroxide (H2O2) prepared from 1.423 g of H2O2 that is titrated with 40.22 mL of 0.01143 M KMnO4(aq), you will need to determine the mass of H2O2 that is actually present in the solution.

The balanced equation for the reaction is:

2KMnO4(aq) + 3H2O2(aq) + 8H+(aq) --> 2MnO2(s) + 5O2(g) + 8H2O(l)

From the equation, we know that for every 2 moles of KMnO4(aq), 3 moles of H2O2(aq) are consumed. Therefore, the number of moles of H2O2 that are actually present in the solution can be determined by multiplying the moles of KMnO4 consumed by 3/2.

The moles of KMnO4 consumed can be determined by multiplying the volume of KMnO4 used by its concentration in mol/L.

So the moles of KMnO4 = 40.22 mL x 0.01143 mol/L = 0.459 mol

The moles of H2O2 present = (3/2) x 0.459 mol = 0.6885 mol

The mass of H2O2 present = 0.6885 mol x 34.02 g/mol = 23.55 g

Therefore, the percent by mass of the solution of H2O2 is (23.55 g / 1.423 g) x 100 = 1.6547 %

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A tank fires a round of ammunition at a speed of 500 m/s. The round travels 2,000 m. How long did it take it to travel that far?

Answers

Answer:

To find out how long it took for the round to travel 2,000 m, we can use the formula:

time = distance / speed

In this case, the distance is 2,000 m and the speed is 500 m/s. So we can plug in these values:

time = 2000 m / 500 m/s

time = 4 seconds

So the round took 4 seconds to travel 2,000m.

What is so surprising about the properties of the elements sodium and chlorine when they chemically bond to form the compound sodium chloride?

Answers

Sodium (Na) and chlorine (Cl) are two highly reactive elements that, when chemically bonded, form the compound sodium chloride (NaCl), more commonly known as table salt.

What is surprising about the properties of these elements when they chemically bond to form this compound is that the resulting compound is a very stable and highly crystalline solid that is not reactive or explosive like the individual elements.

What are the elements about?

Sodium, when exposed to air or moisture, reacts vigorously and can ignite or explode. Chlorine, being a halogen, is a highly reactive gas and can be toxic to living organisms. However, when they bond together, they form a stable compound that is safe to handle and consume.

Therefore, Another surprising property of this compound is that it is an ionic compound, meaning it is composed of ions with a positive charge (Na+) and negative charge (Cl-). This type of chemical bond is formed by the transfer of electrons from one atom to another, which makes it an ionic bond, different from covalent bond that is formed by the sharing of electrons.

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which compounds are most likely to form a solution when mixed? group of answer choices hexane (c6h14) and water(h2o) hexane and ammonia (nh3) hexane (c6h14) and octane (c8h18) sodium chloride (nacl) and hexane (c6h14)

Answers

D) sodium chloride (NaCl) and hexane (c6h14) are most likely to form a solution when mixed.

Sodium chloride (NaCl) and hexane (C6H14) are two common substances that can form a solution when mixed. When these two substances are combined, the sodium chloride molecules interact with the hexane molecules and form a homogenous mixture.

This mixture allows for the two components to be evenly distributed throughout, creating a solution. The combination of sodium chloride and hexane is able to form a solution due to the polar nature of sodium chloride and the non-polar nature of hexane.

The polar nature of sodium chloride allows it to form strong hydrogen bonds with the non-polar hexane molecules, resulting in a homogenous mixture.

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Analyze the following proton nmr spectrum for a compound with the chemical structure c10h12o2. Draw the structure of the compound

Answers

Guaiacol, a pale yellow oily liquid that is the allylic replacement for eugenol(C10H12O2 ), is a liquid. Its aroma is pleasant, spicy, and reminiscent of cloves. It is one of the most significant substances found in cloves.

The compound eugenol (4-allyl-2-methoxyphenol) has anti-inflammatory, antiseptic, and antibacterial effects. One of the reduced phenylpropanoids and a key ingredient in clove oil is eugenol.C10H12O2 -> 5 unsaturation sites. For a molecule of this size (i.e., only 10 carbons), the presence of a phenyl ring is often responsible for the high number of unsaturation sites (which provides 4sites on its own). Look for signals in the 7-8 ppm (aromatic proton) range in the 1H nmr spectrum for an immediate demonstration..

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Correctly classify each of the following compounds as highly soluble or as either slightly soluble or insoluble in water. NaCl, KOH, CH3CH2OH, CH3COOH, CH3OH, Na2SO4, CH2Cl2, CH3(CH2)5OH, C6H6, C6H14, CCl4, CHCl3, KNO3

Answers

The Highly Soluble : NaCl, KOH, CH₃CH₂OH, CH₃COOH, CH₃OH, Na₂SO₄, KNO₃

The Insoluble: C₆H₆, C₆H₁₄, CCl₄, CHCl₃, CH₂Cl₂, CH₃(CH₂)₅OH

1) NaCl : NaCl is a chloride and NaCl is highly soluble.

2)  CH₃C l: This compound is an organic. The electronegativity between C and Cl is high, and is polar. Because water is also polar, it is highly soluble.

3) CH₃OH:  Alcohols are hydrocarbon are is highly soluble in water because of hydrogen bonding.

4) KOH: KOH is highly soluble. This is a strong an readily dissociates in water.

5)  C₆H₆ : It is the benzene ring and is a nonpolar molecule, so it is expect this is insoluble with water.

6) C₆H₁₄ : It is hexane of  long chain of hydrocarbons. There is no hydrogen bonding, this is nonpolar and insoluble in water.

7) KNO₃: It is highly soluble because all nitrates are soluble in the water.

8)  CCl₄ : There is balance of the partial charges which makes it a nonpolar. It  is insoluble in water.

9) Na₂SO₄: It is highly soluble.

10) CH₃CH₂OH: It is highly soluble in water.

11) CH₂Cl₂ : This is polar and due this it is highly soluble in water.

12) CH₃COOH : It is a carboxylic acid. It is highly soluble in water.

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when small molecules are linked together to form larger molecules, the increase in entropy typically comes from:

Answers

When the small molecules are linked together to form the larger molecules, the increase in the entropy typically comes from : heat.

The entropy can be defined as the measure of the randomness or the disorder of the particular system. Some properties of the entropy is given as :

1) The SI unit of the entropy is J/Kmol

2) The entropy is the thermodynamic function.

3) The entropy is the state function.

4) The entropy is depends on the state system and not on the path.

Thus, the increase in the entropy comes in the form of heat when  the small molecules are linked together to form the larger molecules.

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Simplify the following expression:

Answers

The simplification of the expression will return 3. Option 1.

Simplification of an algebraic expression

The expression to be simplified is as follows:

3 mol/1 x 1/1 mol

This is the same as: 3 mol x 1/1 x 1 mol

Carrying out the mathematical expressions of the numerator and denominator, we will have:

 3 mol/1 mol

Carrying out the division, the 'mol' will cancel out while 3/1 will give us 3.

In other words, 3 mol/1 x 1/1 mol will return a value of 3.

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Solid aluminum has a specific heat capacity of 0.90 J/g K How many joules of heat are absorbed to raise the temperature of 24.0 grams of aluminum from 300. K to 350. K?

Answers

The amount of heat absorbed to raise the temperature of 24.0 grams of aluminum from 300K to 350K is 1080J.

How to calculate heat?

The amount of heat absorbed or released by a substance can be calculated as follows:

Q = mc∆T

Where;

Q = quantity of heat absorbed or releasedm = mass of substancec = specific heat capacity∆T = change in temperature

According to this question, a solid aluminum has a specific heat capacity of 0.90J/g K. The amount of heat absorbed or released by the substance is calculated as follows:

Q = 24.0 × 0.90 × {350 - 300}

Q = 24.0 × 0.90 × 50

Q = 1,080 Joules

Therefore, 1080J is the amount of heat absorbed by the aluminium sample.

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