What is the texture and appearance of oil

Hello, this is Bing. I can help you with your question. Based on the information I found on the web, **H2** can be broken down into its two atoms of hydrogen (H) by supplying enough energy to overcome the bond that holds them together⁴. This process is called **dissociation** and requires an energy equal to or greater than the **dissociation energy** of H2, which is about 436 kJ/mol⁴.

One way to break down H2 is by using **electricity** to split water (H2O) into hydrogen (H2) and oxygen (O2) through a process called **electrolysis**¹. In this process, water is decomposed into its elements by passing an electric current through it. The electric current is provided by a battery or another source of electricity and the water needs to have an **electrolyte**, such as salt or acid, added to it to make it conductive¹. Two electrodes, usually made of metal or other conductive material, are inserted into the water and connected to the battery. The electrode connected to the positive terminal of the battery is called the **anode** and the one connected to the negative terminal is called the **cathode**¹. When the electric current flows through the water, hydrogen gas bubbles form at the cathode and oxygen gas bubbles form at the anode¹. The overall chemical reaction for electrolysis of water is:

2 H2O → 2 H2 + O2

Another way to break down H2 is by using **heat** to cause a reaction between hydrogen and oxygen that produces water and releases a large amount of energy. This reaction is called **combustion** or **oxidation** and can be ignited by a spark or a flame³. The reaction is very fast and explosive and can be dangerous if not controlled. The overall chemical reaction for combustion of hydrogen is:

2 H2 + O2 → 2 H2O

I hope this helps you understand how H2 can be broken down and what methods are used to do so.

As the given equation was was burned in the presence of 5.23 g, we have less moles of O2, it is the limiting reagent in this reaction.

To determine which reagent is the limiting reagent, we need to compare the number of moles of each reagent with the stoichiometric coefficients in the balanced chemical equation.

First, let's calculate the number of moles of each reagent:

Number of moles of \(C_2H_6\) = 7.35 g / 30.07 g/mol = 0.244 mol

Number of moles of \(O_2\) = 5.23 g / 32.00 g/mol = 0.163 mol

Now, let's use the balanced chemical equation to determine the stoichiometric ratio between the two reagents:

\(2C_2H_6 + 7O_2 --- > 6H_2O + 4CO_2\)

According to the stoichiometry of the reaction, 2 moles of \(C_2H_6\) react with 7 moles of O2. Therefore, the limiting reagent is the one that is present in lesser moles with respect to the stoichiometric ratio.

Thus, since we have less moles of \(O_2\), it is the limiting reagent in this reaction.

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Answer:

2320 J

Explanation:

We'll begin by calculating the change in temperature of the copper. This can be obtained as follow:

Initial temperature (T₁) = 28.0 °C

Final temperature (T₂) = 99.0 °C

Change in temperature (ΔT) =?

ΔT = T₂ – T₁

ΔT = 99 – 28

ΔT = 71 °C

Finally, we shall determine the heat absorbed by the copper. This can be obtained as follow:

Mass of copper (M) = 85 g

Change in temperature (ΔT) = 71 °C

Specific heat capacity (C) = 0.385 J/K.g

Heat (Q) absorbed =?

Q = MCΔT

Q = 85 × 0.385 × 71

Q = 2320 J

Thus, the heat absorbed is 2320 J

Explanation:

Depression in Freezing point

= Kf × i × m

where m is molality , i is Van't Hoff factor, m = molality

Since molality and Kf remain the same

depression in freezing point is proportional to i

i= 2 for CuSO4 ( CuSO4----------> Cu+2 + SO4-2

i=1 for C2h6O

i= 3 for MgCl2 ( MgCl2--------> Mg+2+ 2Cl-)

So the freezing point depression is highest for MgCl2 and lowest for C2H6O

so freezing point of the solution = freezing point of pure solvent- freezing point depression

since MgCl2 has got highest freezing point depression it will have loweest freezing point and C2H6O will have highest freezing point

Answer:

0.348 L

Explanation:

Step 1: Given data

Step 2: Calculate the volume of the concentrated solution

We want to prepare a dilute solution from a concentrated one. We can calculate the volume of the concentrated solution using the dilution rule.

C₁ × V₁ = C₂ × V₂

V₁ = C₂ × V₂ / C₁

V₁ = 1.07 M × 2.11 L / 6.49 M = 0.348 L

The rate of percolation of water into the soil will be 0.125 mL per second

The rate of percolation of water into the soil is determined by the volume of water that enters the soil per unit of time under specific conditions.

In this case, 750 mL of water percolated in 100 minutes.

100 minutes = 100 x 60 = 6,000 seconds

Percolation rate = 750/6000 = 0.125 mL per second

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The wavelength of light that should be employed for nickel(II) ion is roughly 400–500 nm, according to the absorbance spectra displayed. This is due to the graph's observation of an absorbance peak with a maximum of roughly 0.8 in this region.

The plot of a substance's absorbance as a function of light wavelength is called the absorbance spectrum. The absorbance spectrum in this instance is for the nickel(II) ion.

The peak in absorbance shows that the nickel(II) ion's electrons are most easily moved from a lower energy state to a higher energy one by this particular wavelength of light. As a result, more light is absorbed, increasing the measured absorbance.

Depending on the particular experiment and the tools being used, a specific wavelength of light should be employed. However, judging by the absorbance spectrum displayed, measuring nickel(II) ion absorbance should be possible at a wavelength of roughly 400–500 nm.

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Answer:

Explanation:

From the given information:

Let y(t) be the amount of sugar in tank A at any time.

Then, the rate of change of sugar in the tank is given by:

\(\dfrac{dy}{dt}= (rate \ in ) - ( rate \ out )\)

The rate of the sugar coming into the tank is 0

\(\text{rate of sugar going out }= \dfrac{y(t) \ pound}{100}\times \dfrac{1 }{min} \\ \\ = \dfrac{y}{100} \ pound/min\)

\(So; \\ \\ \\ \dfrac{dy}{dt} = 0 - \dfrac{y}{100} \\ \\ \implies \dfrac{dy}{y }= -\dfrac{dt}{100 } \\ \\ \implies dx|y| = -\dfrac{t}{100}+C \\ \\ \implies e*{In|y|}= e^{-\dfrac{t}{100}+C} \\ \\ \implies y = Ce^{-\dfrac{t}{100}}\)

Initial amount of sugar = 25 Pounds

Now; y(0) = 25

25 = Ce⁰

C = 25

So;  y(t) = 25 \(e^{-\dfrac{t}{100}\)

Thus, the amount of sugar at any time t = \(\mathbf{25 e^{^{-\dfrac{t}{100}}}}\)

B) For tank B :

\(\dfrac{dy}{dt}= 1 - \dfrac{y}{50 } \\ \\ \dfrac{dy}{dt}= \dfrac{50-y}{50} \\ \\ \dfrac{dy}{50-y }= \dfrac{dt}{50}\)

Answer:

1.6/0.100

= 16

16 x 5

= 80

now you need to multiply as you divided before so the answer is

=.80

Your welcome

The mass of hexane, C₆H₁₄ that would be needed to produce 562 grams of carbon dioxide, CO2 is 183 g

We'll begin by writing the balanced equation for the reaction.

2C₆H₁₄ + 19O₂ → 12CO₂ + 14H₂O

From the balanced equation above,

528 g CO₂ were produced from 172 g of C₆H₁₄

With the above information, we shall determine the mass of hexane, C₆H₁₄ needed to produce 562 g CO₂. Details below:

From the balanced equation above,

528 g CO₂ were produced from 172 g of C₆H₁₄

Therefore,

562 g of CO₂ will react to produce = (562 × 172) / 528 = 183 g of C₆H₁₄

Thus, the mass of hexane, C₆H₁₄ needed is 183 g

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Answer:

Scientia

Explanation:

Sample Essay On What Science Means to You The word 'science' is derived from the Latin word 'Scientia' which means knowledge. Therefore, science is about gaining knowledge either through observing, studying, experience, or practice.

Answer:

Gases in Earth's atmosphere form a protective layer

Nitrogen, oxygen and ozone molecules in the upper atmosphere and stratosphere absorb ultraviolet light from the Sun, providing a shield that prevents this radiation from passing to the Earth's surface.

Explanation:

i got this from  

...www.aeronomie.be

For metal and nonmetal pairs, the electronegativity difference tends to be larger for pairs that are farther apart on the periodic table. For nonmetal and nonmetal pairs, the electronegativity difference tends to be smaller, since both elements are closer in electronegativity.

In general, there is a trend for the electronegativity difference to increase as you move from left to right across a row in the periodic table, and decrease as you move down a column.

It is indeed possible for a compound containing polyatomic ions to have both types of bonding present, depending on the specific elements and their electronegativities involved in the compound.

For example, in a molecule like HNO3, there are both covalent bonds between the atoms within each polyatomic ion (N and O), as well as ionic bonds between the H+ and NO3- ions.

The  chart can be completed as follows:

Mg to CL: 1.31, 3.16, 1.85, Ionic

H to O: 2.20, 3.44, 1.24, Polar Covalent

C to Cl: 2.53, 3.16, 0.63, Polar Covalent

N to H: 3.04, 2.20, 0.84, Polar Covalent

C to S: 2.53, 2.58, 0.05, Non-Polar Covalent

K to F: 0.82, 3.98, 3.16, Ionic

Na to Cl: 0.93, 3.16, 2.23, Ionic

H to H: 2.20,  2.20, 0.00, Non-Polar Covalent

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For any spontaneous process, universe entropy intensifies is known as the second law of thermodynamics.

Entropy is defined as the degree of randomness or disorderliness of a system.

The entropy of a system generally increases for any spontaneous process.

This is according to the second law of thermodynamics.

In conclusion, the entropy of a system is the a measure of randomness of the system.

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There are many contributions that all the mentioned fields have made to the development of chemistry.

When you hear the word "alchemy," you might picture witches watching a pot of boiling liquid or sorcerers working in smokey labs or disorganized libraries. Despite these associations with myth and mysticism, alchemical observations claim to have played a significant part in the advancement of modern science.

In the past, alchemy referred to any study of nature. was an ancient philosophical and theological discipline that merged metalworking and chemistry. Physics, medicine, astrology, mysticism, spiritualism, and art were all included in alchemy.

Alchemy was a sacred practice as well as a scientific discipline. Many of its practitioners have altruistic motives. For instance, alchemists may be able to cleanse humans if they discover the secret to "purifying" base metals into gold. At the same time, alchemy has historically been associated with get-rich-quick schemes and plenty of alchemists have been exposed as frauds and impostors.

Nevertheless, a few alchemists were significant practitioners whose work laid the foundation for modern chemistry and medicine.

Therefore, there are many contributions that all the mentioned fields have made to the development of chemistry.

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The completed diagram gives an ionic compound that is 2 moles of Copper iodide ( 2CuI)

Ionic compounds do not exist as molecules. In the solid state, ionic compounds are in crystal lattice containing many ions each of the cation and anion.

There is rule for finding the correct formula.  In every ionic formula the cation is written first and the anion written second.  In the formula, the charge on one becomes the subscripts of the other.

So here, the formula for this compound can be written as CuI

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Answer:

The final temperature of the copper would be 311.3°C.

I hope this helps you

Answer:

Lifting, instability, and moist/humid air

Explanation:

The water is released from the air, forming storm clouds, while humid air is flowing upward at a zone of low pressure over warm ocean water. The air in a hurricane rotates as it rises.

A property of fluid that is unaffected by the method used to obtain it is called a state function. The system's starting state affects a state function.

These are the phrases that accurately describe how a state function works. The physical characteristic of the object's properties that shows its state can be used to define them. Generally speaking, there are two categories for fluid properties. An intensive property is one whose magnitude is not affected by mass. An illustration would include pressure, temperature, mass density, etc. Systems and Types of Thermodynamics A thermodynamic system is one that has limits, either actual or imagined, that separate it from its environment. Access System if the environment and the thermodynamic system can interchange both matter and energy.

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This is True, Social and emotional development is a developmental domain.

What is developmental domain?

The term "domain" when applied to human development describes particular facets of development and change. Language, social-emotional, cognitive, and physical development are the four basic areas of development.

Social-Emotional Domain is defined by forming relationships and attachments. A child's developing knowledge of and ability to manage their emotions is part of the social-emotional domain. Additionally, they start to recognize other people's emotions, become more cooperative, exhibit empathy, and engage in moral reasoning.

This category of developmental domains covers forming relationships with other people and learning social skills. Children gain skills including sharing, taking turns, and accepting others' differences. They also form a variety of relationships, including ones with their parents, siblings, peers, teachers, coaches, and members of the community.

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Answer:

The final volume in mL is 7.14 mL or 7.1 mL.

Explanation:

1.Use Boyle's Law(\(P_{1} V_{1}= P_{2} V_{2}\)). Re-arrange to solve for \(V_{2}\) for the final volume.

2. Plug in values. \(V_{2} =\frac{(2.7 atm)(4.5 mL)}{(1.7 atm)} = 7.14 mL\)

The value of hydroxide ion concentration, [OH⁻] in the table, given that [H₃O⁺] is 2.0×10⁻⁶ M, is 5.0×10⁻⁹ M

From the defininion of pH, we understood that the relationship between hydronium ion, H₃O⁺ and hydroxide ion, OH⁻ in a solution is given as:

[H₃O⁺] × [OH⁻] = 10¯¹⁴

With the above formula, we can determine the value of the hydroxide ion, OH⁻. Details below:

[H₃O⁺] × [OH⁻] = 10¯¹⁴

2.0×10⁻⁶ × [OH⁻] = 10¯¹⁴

Divide both side by 2.0×10⁻⁶

[OH⁻] = 10¯¹⁴ / 2.0×10⁻⁶

[OH⁻] = 5.0×10⁻⁹ M

Thus, we can conclude that the hydroxide ion concentration, [OH⁻] is 5.0×10⁻⁹ M

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Answer:

1is the answer to that one day F

The oxidation number of Ag in Ag2O is +1.

In Ag2O, there are two silver atoms (Ag) and one oxygen atom (O). Oxygen is known to have an oxidation number of -2 in most compounds. Since the compound is neutral, the sum of the oxidation numbers of all the atoms must equal zero.

Therefore, the oxidation numbers of the two silver atoms must add up to +2 to balance out the -2 oxidation number of the oxygen atom. Since there are two silver atoms, each silver atom must have an oxidation number of +1 to yield a total oxidation number of +2 for the compound.

In Ag2O, the silver atoms lose one electron each to form Ag+ ions. This results in an oxidation number of +1 for each silver atom. The oxygen atom gains two electrons from the silver atoms to achieve a stable octet configuration, resulting in an oxidation number of -2 for the oxygen atom. The compound Ag2O is formed through the transfer of electrons, with each silver atom exhibiting an oxidation number of +1.

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The volume of 5.5 grams of carbon dioxide (CO2) at room temperature and pressure is approximately 2.42 dm³.

To calculate the volume of carbon dioxide (CO2) at room temperature and pressure (r.t.p), we can use the ideal gas law equation:

PV = nRT

Where:

P is the pressure

V is the volume

n is the number of moles

R is the ideal gas constant

T is the temperature

At r.t.p, the pressure is typically considered to be 1 atmosphere (atm) or 101.325 kilopascals (kPa). The temperature is approximately 298 Kelvin (K), which is equivalent to 25 degrees Celsius (°C).

First, we need to calculate the number of moles of carbon dioxide (CO2) using its mass and molar mass.

The molar mass of CO2 is calculated by adding the atomic masses of carbon (C) and two oxygen (O) atoms:

Molar mass of CO2 = (12.01 g/mol) + 2*(16.00 g/mol) = 44.01 g/mol

Now, we can calculate the number of moles using the given mass of 5.5 grams:

n = mass / molar mass = 5.5 g / 44.01 g/mol ≈ 0.125 mol

Next, we can rearrange the ideal gas law equation to solve for volume (V):

V = (nRT) / P

Substituting the known values into the equation:

V = (0.125 mol * 0.0821 L·atm/mol·K * 298 K) / 1 atm

V ≈ 2.42 dm³

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Graphene is the perfect material to improve a piece of clothing due to its high thermal and electrical conductivity. Maternity, utility, and intelligent clothing products can benefit from the good heat retention property and electrical conductivity.

Graphene may be incorporated directly into the fibre or applied as a coating on the textile's surface. The coating approach is less complicated, more economical, and perfect for a variety of textiles and related high-value materials. Textiles with graphene coatings have the potential to be perfect for wearable technology.

Hypoallergenic, non-cytotoxic, and non-toxic describe graphene. One layer of carbon atoms makes up graphene, which is 200 times stronger than steel.

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267ml of the stock solution should be used in the dilution.

What is stock solution?

A stock solution is made by weighing out an acceptable quantity of a pure solid or measuring out an appropriate volume of a pure liquid, placing it in a suitable flask, and diluting to a specified volume. The exact method of measuring the reagent relies on the intended concentration unit.

What is Nacl?

Sodium chloride is used as an electrolyte replenisher to help prevent heat cramps caused by excessive sweating. This medicine is also used to make a normal isotonic sodium chloride solution.

stock Nacl = 3.00M =M1

Diluted Nacl = 2.0M =M2

volume of Diluted Nacl = 400.0mL =V2

volume of stock Nacl = 2 = V1

stock Nacl vs Diluted Nacl

   V1= M2V2÷M1

V1= 266.6666ml

V1= 267ml

Hence 267ml is a correct answer.

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The correct final temperature is 53.7°C

The temperature of water when mixed with another substance will depend on the temperature of the other substance and the amount of energy transferred between the two substances.

If the other substance has a higher temperature than the water, heat energy will flow from the hotter substance to the cooler water, and the temperature of the water will increase until thermal equilibrium is reached.

We know that heat gained = Heat lost

We the have that;

350 * 4.2 * (T - 32) = -250 * 4.2 * (84 - T)

1470T - 47040 = -88200  +  1050T

T = 53.7°C

The final temperature of the mixture is 53.7°C.

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