how to solve chemical equations plss explain​

The boiling point of benzene when the external pressure is 440 torr is 80.1 °C (176.2 °F).

What is benzene?

Benzene is an organic compound composed of six carbon atoms in a ring structure, with one hydrogen atom attached to each carbon atom. It is a highly flammable, colorless liquid with a sweet smell. Benzene is a natural component of crude oil and is one of the most important organic chemicals used in industry. It is used in the production of plastics, resins, synthetic fibers, rubber, pesticides, detergents, drugs, and dyes. It is also used as a solvent for fats, oils, waxes, resins, and inks. Benzene is classified as a carcinogen and its exposure can cause a variety of adverse health effects, including acute myelogenous leukemia, lymphomas, and other forms of cancer.

To learn more about benzene

https://brainly.com/question/17211567

#SPJ1

Answer:

You need to add more points people will not answer if its this low

Explanation:

Answer:

B

Explanation:

Kinetic and electrical energy are generated when a light bulb is turned on

1. The constituent gases of air are:

2. The surrounding air is not seen with the eyes because it is transparent. Air molecules are not visible to the na-ked eye, and they do not scatter or absorb visible light significantly. Therefore, air appears colorless and transparent.

3. To prove that air supports burning, you can perform an experiment with a burning candle. Place a glass jar or bell jar over a lit candle, ensuring that the jar is airtight. As the candle burns, it consumes oxygen from the air inside the jar. Eventually, the candle flame will go out due to the lack of oxygen, proving that air (specifically oxygen) is necessary for burning.

4. To show that air occupies space, you can perform a simple experiment using a plastic bottle or syringe. Fill the bottle or syringe with water, ensuring there are no air bubbles. Then, cover the opening tightly and try to compress the air inside. You will find that it is not possible to compress the air significantly, indicating that air occupies space.

5. To prove that air has weight, you can use a sensitive balance or scale. Weigh an airtight container or balloon, and then fill it with air. The weight of the container or balloon with the added air will be greater than its initial weight, demonstrating that air has weight.

6. Air is useful to us in various ways. Three points highlighting the importance of air are:

7. Three properties of air include:

Air exerts force in various ways. For example, air pressure allows objects like airplanes to fly by providing lift. Air resistance or drag opposes the motion of objects moving through the air, creating a force that can affect their speed and trajectory.

8. Four effects of air pollution include:

9. Causes of pollution:

10. Two control measures for air pollution include:

Learn more about air on https://brainly.com/question/15215203

#SPJ1

The amount of heat required to raise the temperature of the 34.2 g sample of aluminum by 34 oC is 1043.52 J.

What is Temperature?

Temperature is a measure of the average kinetic energy of the particles in a substance. It is a physical property that determines the direction of heat flow between two objects or systems in contact with each other. Temperature is measured in degrees Celsius (°C) or Fahrenheit (°F), or in kelvin (K) in the International System of Units (SI).

The amount of heat (q) required to raise the temperature of a substance can be calculated using the formula:

q = m x c x ΔT

Where:

m = mass of the substance (in grams)

c = specific heat of the substance (in J/g oC)

ΔT = change in temperature (in oC)

Plugging in the values given:

m = 34.2 g

c = 0.9 J/g oC

ΔT = 34 oC

q = (34.2 g) x (0.9 J/g oC) x (34 oC)

q = 1043.52 J

Therefore, the amount of heat required to raise the temperature of the 34.2 g sample of aluminum by 34 oC is 1043.52 J.

Learn more about Temperature

brainly.com/question/26866637

#SPJ1

The property X is an extrinsic property.

The term extensive property refers to the type of property that depends on the amount of the substance present. We must recall that an intensive property does not in any way depend on the number or the amount of the substance present in the sample.

If we have a good look at the table that is being referred to here, we would see that the mass of the substance tends to increase as a certain un named property of the substance X is increasing. This implies that the property X is affected by the mass of the object which is the quantity of matter in the object. This gives us an idea that the property that we are referring to can not be an intrinsic  property since it varies with the mass of the substance that is under study as shown.

We can then conclude that the property X is an extrinsic property.

Learn more about extrinsic property: https://brainly.com/question/28588297

#SPJ1

Missing parts;

Carrie measured mass and another property, X, of three pure samples of the same compound. She recorded her data in the table. Which of the following best describes property X?

A. X  is an intensive property because it does not vary with the size of the sample.

B. X is an extensive property because it does not vary with the size of the sample.

C. X is an extensive property because it varies directly with the size of the sample.

D. X is an intensive property because it varies directly with the size of the sample.

The distance of Planet B from the Sun is approximately 0.3149 AU.

Kepler's third law states that the square of the orbital period of a planet is proportional to the cube of its average distance from the Sun. Mathematically, it can be written as:

\(T^2 = (4\pi ^2/GM) * r^3\)

where T is the period of the planet, M is the mass of the Sun, G is the gravitational constant, and r is the distance of the planet from the Sun.

We can use this formula to calculate the distance of Planet B from the Sun, given that its period is 4.50 Earth years. We'll need to know the mass of the Sun, which is approximately \(1.99 * 10^{30\) kg.

First, we need to find the value of (T^2/r^3) for Planet A:

(T^2/r^3) for Planet A = (31.6 Earth years)^2 / (10.0 AU)^3

(T^2/r^3) for Planet A = 998.56 Earth years^2/AU^3

Now we can use this value to find the distance of Planet B from the Sun:

(T^2/r^3) for Planet B = (4.50 Earth years)^2 / r^3

Since the two planets are orbiting the same star, we can assume that the mass of the Sun is the same for both planets. Therefore, we can set the two expressions for (T^2/r^3) equal to each other:

(T^2/r^3) for Planet A = (T^2/r^3) for Planet B

998.56 Earth years^2/AU^3 = (4.50 Earth years)^2 / r^3

We can now solve for r:

r^3 = (4.50 Earth years)^2 / 998.56 Earth years^2/AU^3

r^3 = 0.020295 AU^3

r = 0.3149 AU

For more question on distance click on

https://brainly.com/question/14534420

#SPJ11

The solution is supersaturated from the solubility curve shown.

A solubility curve is a graphical representation of the relationship between the solubility of a substance and temperature. It shows how the solubility of a solid solute (e.g., salt, sugar) changes with temperature in a given solvent (e.g., water).

A solubility curve is typically plotted with solubility on the y-axis and temperature on the x-axis. The curve generally slopes upward, meaning that as the temperature increases, the solubility of the solute in the solvent also increases. This is because higher temperatures increase the energy of the solvent and solute particles, making it easier for them to dissolve and form a homogeneous solution.

Learn more about solubility curves:https://brainly.com/question/8591226

#SPJ1

Missing parts:

When 50 grams of potassium chloride KCI is dissolved in 100 grams of water at 50 C the solution can correctly be described as

A unsaturated

B saturated

C supersaturated

At 298 K, the reaction N2(g) + 3H2(g) 2NH3(g) results in an enthalpy change (H) of -92.38 kJ.

To learn more about enthalpy refer to:

https://brainly.com/question/18849238

#SPJ1

The chemical formula of aspartame is C₁₄H₁₈N₂O₅ and it's relative molecular mass is 294.30 g/mol which is calculated as (12×14)+(1×18)+(14×2)+(16×5).

Molecular  mass of a compound or a molecule is defined as the mass of the elements which are present in it.The molecular mass is considered to be a bulk quantity not a molecular quantity. It is often an average of the of the masses at many instances.

The molar mass and formula mass are used as synonym for the molecular mass.It does not depend on the amount of substance which is present in the sample.It has units of gram/mole.

Molecular masses of an element are given as relative atomic masses while that of compounds is the sum of relative atomic masses which are present in the compound.In case of aspartame it is calculated as,(12×14)+(1×18)+(14×2)+(16×5)=294.30 g/mol.

Thus , relative molecular mass or molecular mass of aspartame is 294.30 g/mol.

Learn more about molecular mass,here:

https://brainly.com/question/18446366

#SPJ1

We can actually deduce here that the purpose of this assignment is to teach students about decomposition reactions and allow them to determine the percent yield.

By performing the experiment, students will gain a better understanding of the concepts involved and how they relate to their overall learning.

The specific focus of this assignment is the decomposition of sodium bicarbonate (NaHCO3) to produce sodium carbonate (Na2CO3), water (H2O), and carbon dioxide (CO2). The unbalanced chemical equation for this reaction is:

NaHCO3 (s) + heat -> Na2CO3 (s) + H2O (g) + CO2 (g)

To understanding the reaction itself, students will also learn about the concept of percent yield. Percent yield is a measure of the efficiency of a chemical reaction and is calculated by dividing the actual yield of the desired product by the theoretical yield, then multiplying by 100.

This calculation allows students to assess how well the reaction proceeds in terms of producing the expected amount of sodium carbonate.

Learn more about experiment onhttps://brainly.com/question/25303029

#SPJ1

Answer:

The mechanical properties of urea formaldehyde resins may be improved by incorporating therein polyvinyl alcohol. The polyvinyl alcohol may be incorporated during pre-mixing, mid mixing, and/or post mixing of the resin components. Resins prepared using polyvinyl alcohol are particularly desirable in articles requiring improved mechanical strength and water resistance, as compared to similar resins prepared without the polyvinyl alcohol such as shingles.

Answer:

Option C (The plate will definitely fracture) is the correct option.

Explanation:

According to the question,

The critical stress will be:

⇒ \(\sigma_c = \frac{K}{Y \sqrt{\pi a} }\)

By putting the values, we get

        \(=\frac{50}{1.1\times \sqrt{\pi\times 0.5} }\)

        \(=1146.87 \ MPa\)

So,

Thus, the above is the correct response.

Answer:

Volume = 3.4 L

Explanation:

In order to calculate the volume of CO₂ produced when 15.2 g of CaCO₃ is heated, we need to first write out the balanced equation of the thermal decomposition of CaCO₃:

CaCO₃ (s) + [Heat] ⇒ CaO (s) + CO₂ (g)

Now, let's calculate the number of moles in 15.2 g CaCO₃:

mole no. = \(\mathrm{\frac{mass}{molar \ mass}}\)

                 = \(\frac{15.2}{40.1 + 12 + (16 \times 3)}\)

                 = 0.1518 moles

From the balanced equation above, we can see that the stoichiometric molar ratios of CaCO₃ and CO₂ are equal. Therefore, the number of moles of CO₂ produced is also 0.1518 moles.

Hence, from the formula for the number of moles of a gas, we can calculate the volume of  CO₂:

mole no. = \(\mathrm{\frac{Volume \ in \ L}{22.4}}\)

⇒ \(0.1518 = \mathrm{\frac{Volume}{22.4}}\)

⇒ Volume = 0.1518 × 22.4

                 = 3.4 L

Therefore, if 15.2 g of CaCO₃ is heated, 3.4 L of CO₂ is produced at STP.

The mass of ammonia that reacts with 8.65 gm of oxygen gas is 3.649 gm.

About 80% of industrial ammonia is used as fertilizer in agriculture. It is also used as refrigerant gas, water purification, and in the production of plastic, explosives, textile, pesticide, dyes, and chemical products.

The balanced chemical equation for ammonia can be written as:

4NH₃ + 5O₂→  4NO + 6H₂O

This equation is a redox reaction in which the charge of the nitrogen in ammonia goes from -3  to +2 and the charge of the oxygen goes from -0 to -2.

4 moles of ammonia consume 5 moles of O₂.

1 mol of Oxygen = 32gm

So to calculate the mass of ammonia consumed by the reaction of 8.56 g of oxygen gas

8.56 × 1/32 × 4/5 × 17.039/1 = 3.649 gm NH₄.

To learn more about the ammonia, refer to the link:

https://brainly.com/question/29519032

#SPJ6

Answer: H

Explanation:

Aluminum can be oxidized by \(Li^{+}\) and \(Ca^{2+}\)

Some of the metal corrodes (or oxidizes) and forms the corresponding metal oxide on the surface as a result of a chemical reaction between the metal surface and the oxygen in the air. The corrosion products that occur in some metals, like steel, are highly apparent and loose.

According to reactivity series (The array of metals in the descending order of their reactivities is referred to as the metals' reactivity series. It is sometimes referred to as the metals in the activity series.)

Lithium and calcium ions are more reactive than aluminum ion and they are less electronegative.

Since silver and tin are more electronegative than aluminum so, they cannot oxidize aluminum.

∴ \(Li^{+}\) and \(Ca^{+2}\) ions can oxidize aluminum.

Learn more about electronegativity here https://brainly.com/question/16446391

#SPJ10

Answer:

Complex I, Complex III, and Complex IV contribute to the pumping of protons into the intermembrane space.

Explanation:

In the electron transport chain, the energy of electron transfer is conserved in the transfer of protons from the inner mitochondrial matrix which becomes negatively charged, into the intermembrane space which becomes positively charged. The complexes involved in this process of pumping protons are Complexes I, III, and IV.

Complex I (also called NADH dehydrogenase): It pumps four protons into the intermembrane space simultaneously with the transfer of a hydride ion from NADH to ubiquinone.

Complex III (also called cytochrome bc₁ complex): It pumps four protons into the intermembrane space for every pair of electrons it transfers to cytochrome c.

Complex IV (also called cytochrome oxidase): For each electron pair transferred to molecular oxygen, it pumps two protons into the intermembrane space.

Answer:

Empirical formula of a compound means that it provides simplest ratio of whole number.

Explanation:

Mass of boron and chlorine is 9.224% and 90.74%

Answer:

Explanation:

Characteristic properties are a chemical or physical property that helps identify and classify substances. 

some are whether or not is homogenous, color, boiling point, melting point and so on

some products I have at home that are common are:

Body wash

Bleach

Laundry detergent

all of these are homogenous mixtures. A homogeneous mixture looks like a single mixture, but it's made up of more than one thing.

a mother simple characteristic property as I mentioned is color and the color of my laundry detergent is green (I use Gain), bleach is a clear color, and body wash can be almost any color but the most common could be white.

for importance you just write what the product does

the graph will look like this:

The mechanism of  the reaction of an alkene with an electrophile attached below

There's 2 steps in reaction between alkene and electrophile

The K in the KI electrophile is attacked by the two pi electrons from the double bond during the first step of the process, which is denoted by a curved arrow. The hydrogen from HBr and a carbon from the double bond combine to produce a C-H sigma bond thanks to the two pi electrons. In order to create a halide anion, the electrons from the H-X bond simultaneously transfer to the halogen. One of the carbons becomes an intermediate carbocation with an electron deficit when pi electrons from the double bond are removed. The positive charge is housed in an unhybridized p orbital on this sp2 hybridized carbon atom.

In order to receive an electron pair from the nucleophilic halide anion, the generated carbocation can now function as an electrophile. The neutral alkyl halide is the end result of electrophilic addition, and the electron pair transforms into an X-C sigma bond.

The HBr, HCl, HI, and HF halides can all take part in this reaction and add on in the same way. Although various halides do react at varying rates, this is because the H-X bond weakens with increasing X due to inadequate orbital overlap.

Your question is incomplete but most probably your full question attached below

Learn more about electrophile attack at https://brainly.com/question/14704243

#SPJ4

The final temperature of the granite and the water in the calorimeter is 8.4°.

We know that in accordance to the first law of thermodynamics, energy is neither created nor destroyed but it can be converted from one form to another. This implies that the heat that is lost by the granite has to be equal to the heat that is gained by the water in this case.

Knowing that;

H = mcdT

H = heat lost or gained

c = specific heat capacity of the substance

dT = temperature change

Heat lost by the granite = Heat gained by water

52.6 * 0.79 * (θ - 125) = 100 * 4.18 * (θ - 20)

41.6θ - 5200 = 418θ - 8360

Collecting the like terms

41.6θ  - 418θ =  - 8360 + 5200

-376.4θ =  -3160

θ = -3160/-376.4

θ = 8.4°

Learn more about calorimeter:https://brainly.com/question/4802333

#SPJ1

Ammonia (\(NH_3\)) and ammonium chloride (\(NH_4Cl\)) mixture could be a useful buffer in a solution. Option C

A buffer is a solution that can resist changes in pH when small amounts of acid or base are added. It consists of a weak acid and its conjugate base or a weak base and its conjugate acid. The buffer system works by the principle of Le Chatelier's principle, where the equilibrium is shifted to counteract the changes caused by the addition of an acid or a base.

In option A, acetic acid (\(CH_3CO_2H\)) is a weak acid, but hydrochloric acid (HCl) is a strong acid. This combination does not form a buffer because HCl is completely dissociated in water and cannot provide a significant concentration of its conjugate base.

Option B consists of sodium hydroxide (NaOH), which is a strong base, and elemental sodium (Na), which is a metal. This combination does not form a buffer as there is no weak acid-base pair involved.

Option D contains acetic acid (\(CH_3CO_2H\)), a weak acid, and ammonia (\(NH_3\)), a weak base. Although they are weak acid and base, they do not form a buffer system together as they are both weak acids or bases and lack the required conjugate acid-base pair.

Option C, ammonia (\(NH_3\)), is a weak base, and ammonium chloride (\(NH_4Cl\)) is its conjugate acid. This combination can form a buffer system. When ammonia reacts with water, it forms ammonium ions (NH4+) and hydroxide ions (OH-).

The ammonium ions act as the weak acid, while the ammonia acts as the weak base. The addition of a small amount of acid will be counteracted by the ammonium ions, and the addition of a small amount of base will be counteracted by the ammonia, thus maintaining the pH of the solution relatively stable.

Therefore, option C, consisting of ammonia (\(NH_3\)) and ammonium chloride (\(NH_4Cl\)), is the suitable mixture that could be a useful buffer in a solution.

For more such question on buffer visit:

https://brainly.com/question/13076037

#SPJ8

Answer:

Covalent bond

Explanation:

A covalent bond is defined as the sharing of election pairs between atoms

In general, changes in color during a chemical reaction can be due to a variety of factors, including the formation of new compounds, the breaking of existing compounds, or changes in the oxidation state of atoms in the reactants or products.

Reversible reactions are those that can go in both directions, meaning that the reactants can form products, and the products can also react to form the original reactants. In some cases, changes in color during reversible reactions can occur due to changes in the concentration of reactants or products. If the concentration of one of the reactants or products changes, it can shift the equilibrium of the reaction, causing the reaction to shift in the reverse direction and potentially leading to changes in color.

To learn more about reactants here:

https://brainly.com/question/17096236

#SPJ1

Answer:

\(Volume = 6.5025cm^3\)

Explanation:

Given

Initial Form: Onyx

Final Form: Rectangular Solid

Dimension of Solid = 5.10 cm by 5.10 cm by 2.50 mm

Required

Volume of the solid (in cm³)

The volume of a solid is calculated as thus;

\(Volume = Length * Width * Height\)

Assume the following;

\(Length = 5.10cm\\Width = 5.10cm\\Height = 2.50mm\)

The first thing to do is to convert the assumed height from mm to cm

Given that;

\(1mm = 0.1cm\)

This implies that

\(2.50mm = 2.50 * 0.1cm\\2.50mm = 0.25cm\)

Hence, the dimension of the solid in cm is:

\(Length = 5.10cm\\Width = 5.10cm\\Height = 0.25cm\)

The Volume is then calculated as;

\(Volume = 5.10cm* 5.10cm * 0.25cm\)

\(Volume = 6.5025cm^3\)

Hence, the volume of the rectangular solid is \(Volume = 6.5025cm^3\)

Answer:

a nitrogen oxide

Explanation:

i think