Can someone explain the steps for balancing chemical equations in depth?

Answer: Thus \(CH_3CH(OH)CH_3\) is a secondary alkanol.

Explanation:

Alkanol are compounds which contains carbons bonded by single bonds and contains hydroxy (-OH) as functional group.

Primary alkanol are those compounds which contain hydroxyl group attached a carbon which is further attached to a single carbon atom. Example: \(CH_3CH_2CH_2OH\) and \(CH_3CH_2CH_2CH_2OH\)

Secondary alkanol are those compounds which contain hydroxyl group attached to a carbon which is further attached to two more carbon atoms.Example: \(CH_3CH(OH)CH_3\)

Tertiary alkanol are those compounds which contain hydroxyl group attached to a carbon which is further attached to three more carbon atoms. Example: \(C(CH_3)_3OH\)

Thus \(CH_3CH(OH)CH_3\) is a secondary alkanol.

Answer:

Water is a remarkable substance, and its unique properties are largely due to the presence of polar covalent bonds and hydrogen bonds in its structure. These characteristics play a crucial role in the physical and chemical properties of water, making it essential for life as we know it.

Explanation:

The polar covalent bonds in water arise from the unequal sharing of electrons between oxygen and hydrogen atoms. This results in the oxygen atom having a partial negative charge (δ-) and the hydrogen atoms having partial positive charges (δ+). These charges create polarity within the water molecule, leading to the formation of hydrogen bonds.

Hydrogen bonds occur when the partially positive hydrogen atom of one water molecule is attracted to the partially negative oxygen atom of another water molecule. These hydrogen bonds are relatively weak individually, but when present in large numbers, they contribute to the cohesion, surface tension, and high boiling point of water.

The importance of these bonds is manifold. The cohesion between water molecules due to hydrogen bonding enables water to form droplets, have a high surface tension, and flow freely, facilitating transport within organisms and in the environment. Additionally, hydrogen bonding leads to the high specific heat capacity and heat of vaporization of water, making it an effective regulator of temperature in living organisms and ensuring stable environmental conditions.

Furthermore, hydrogen bonds play a crucial role in the unique properties of water as a solvent. The polar nature of water allows it to dissolve a wide range of substances, including ionic compounds and polar molecules, facilitating various biological processes such as nutrient transport and chemical reactions in cells.

Explanation:

A mixture is made of two or more substances that are not chemically combined whereas a compound is made of 2 or more elements that are chemically combined. The elements that make up the compound are combined in fixed ratios.

Answer: Most methods for making new elements involve a cyclotron, which speeds up atoms to high velocities before they smash into other atoms—these atoms are usually of different elements. This causes the nuclei to combine, creating new heavier elements.

Explanation: How are superheavy elements made?​

Hi

In the modern periodic table, the elements are arranged in the order of their increasing atomic number. In the modern periodic table, there are seven horizontal rows called periods and eighteen vertical columns (1 to 18) called groups. The arrangement of the periods and groups results in formation of boxes.

Explanation:

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Answer:

ionic bond

Explanation:

Answer:

Ionic bonding

Explanation:

Salt    Na+Cl-       is an example

Answer:

Lakes

Explanation:

Because oceans aren't fresh water

Answer:

temperature is increasing

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Answer:

velocity

Explanation:

velocity has both speed AND direction.

Answer:

speed

Explanation:

Speed is the rate at which something covers distance. Velocity is the rate of change of its position, ex: 70km/h to north. Acceleration is the rate at which an object changes its velocity.

Answer:

Acid–base indicators are generally weak protolytes that change color in solution according to the pH. The acid–base equilibrium of a weak acid type of indicator (HI) in water can be represented as. [I] The acid, HI, and the conjugate base, I−, have different colors. The equilibrium expression for this process is.

Explanation:

The substrate haloalkane is a primary ( unhindered ) haloalkane. The Nucleophile is a weakly basic nucleophile, and the solvent is protic.

The term "haloalkanes" refers to alkanes with one or more halogen substituents. Although the distinction is not always acknowledged, they are a subset of the larger class of halocarbons. Commercial application of haloalkanes is widespread.

Polar liquid molecules with dissociable hydrogen atoms are known as aprotic solvents. Polar liquid substances with no dissociable hydrogen atoms are known as aprotic solvents. The creation of hydrogen bonds is possible in aprotic liquids. In aprotic solvents, hydrogen bonds cannot form.

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Answer:

27 gm

Explanation:

Well..... the volume of the copper is   3 cm^3

9.0  g/cm^3    * 3 cm^3 = 27 gm

Sue should prepare 0.750 L of solution.

To prepare a 2.50 M solution of potassium iodide using 75.0 g of the compound, Sue needs to first calculate the molar mass of KI, which is 166 g/mol. Then, she can use the formula M = n/V, where M is the molarity, n is the number of moles, and V is the volume in liters. By rearranging the formula, she can solve for V, which is V = n/M.

To find the number of moles, she can divide the mass by the molar mass: n = 75.0 g / 166 g/mol = 0.451 moles. Substituting these values, she gets V = 0.451 moles / 2.50 mol/L = 0.180 L. However, this is the volume needed for a 2.50 M solution.

To adjust the concentration to the desired value, she can use the formula M1V1 = M2V2, where M1 and V1 are the initial concentration and volume, and M2 and V2 are the final concentration and volume. Solving for V2, she gets V2 = M1V1 / M2 = 2.50 mol/L x 0.180 L / 0.750 mol/L = 0.600 L. Therefore, Sue should prepare 0.750 L of solution.

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Western Europe has made significant progress in reducing air pollution through practices such as monitoring emissions, using catalytic converters, developing cleaner-burning fuels, improving engine efficiency, and adopting agricultural intensification strategies. Options A,B,C ,D and E are correct.

In Western Europe, several practices have been implemented to reduce air pollution and improve air quality. One significant measure is the monitoring of emissions from various sources, including industrial facilities, vehicles, and power plants. This monitoring allows for the identification of pollution hotspots and the implementation of targeted measures to reduce emissions.

Another effective practice is the widespread use of catalytic converters in vehicles. These devices help in converting harmful pollutants emitted from vehicle exhaust, such as nitrogen oxides (NOx), carbon monoxide (CO), and volatile organic compounds (VOCs), into less harmful substances. The mandatory use of catalytic converters has significantly reduced emissions from automobiles and contributed to improved air quality.

The development of cleaner-burning fuels has also played a crucial role in reducing air pollution. Western European countries have adopted stricter fuel quality standards, which have led to the production and use of low-sulfur fuels. Low-sulfur fuels help in reducing emissions of sulfur dioxide (SO2) and particulate matter (PM), both of which contribute to air pollution and respiratory problems.

Improving the efficiency of engines, particularly in the transportation sector, has been another effective approach. More efficient engines consume less fuel, resulting in reduced emissions. This has been achieved through the introduction of stricter fuel efficiency standards for vehicles, promoting the use of hybrid and electric vehicles, and encouraging the adoption of public transportation systems.

Additionally, Western Europe has implemented agricultural intensification strategies that aim to reduce air pollution from farming practices. These strategies include the use of precision farming techniques, such as optimized fertilizer application, reducing pesticide use, and better waste management. By implementing these practices, the release of agricultural pollutants, such as ammonia (NH3) and volatile organic compounds (VOCs), has been significantly reduced.

These efforts have led to improved air quality and the protection of public health and the environment. (Options A,B,C, D and E are correct.)

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Answer:

8 g mL

Explanation:

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D. nuclear fusion

I just took the test

Answer:

Sun and the stars, nothing humans don't use fusion at all

Explanation:

Nuclear fusion reactions  power the  sun  in space. Humans currently use fusion in nuclear weapons by means of nuclear reactions, but researchers are seeking more applications.

There are two types of nuclear reactions which are nuclear fusion and nuclear fission .They involve the combination and disintegration of the element's nucleus respectively.

In nuclear fission, the nucleus of the atom is bombarded with electrons of low energy which splits the nucleus in to two parts .Large amount of energy is released in the process.It is used in nuclear power reactors as it produces large amount of energy.

In nuclear fusion,on the other hand, is a reaction which occurs when two or more atoms combine to form a heavy nucleus.Large amount of energy is released in the process which is greater than that of the energy which is released in nuclear fission process.

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That the pressure doubles when the gas's volume is cut in half.

If gas volume and temperature are maintained constant, the formula demonstrates that pressure and volume are inversely proportional.

This implies that if volume decreases, pressure must increase. This implies that if pressure doubles, volume must be half, and if pressure is halved, volume must be doubled in order to maintain the K value.

If the volume is doubled and the pressure is tripled, the effect on the temperature will be 3 2 = 6 times. This is because for perfect gases, the temperature is directly related to both the volume and the pressure.

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Answer:

1.78 atm

Explanation:

From the question given above, the following data were obtained:

Mass of Cl = 355 g

Molecular weight of Cl = 70.9 g/mol

Volume (V) = 70.0 L

Temperature (T) = 30 °C

Pressure (P) =?

Next, we shall determine the number of mole in 355 g of chlorine (Cl). This can be obtained as follow:

Mass of Cl = 355 g

Molecular weight of Cl = 70.9 g/mol

Mole of Cl =.?

Mole = mass /molecular weight

Mole of Cl = 355 /70.9

Mole of Cl = 5 moles

Next, we shall convert 30 °C to Kelvin temperature. This can be obtained as follow:

T(K) = T(°C) + 273

Temperature (T) = 30 °C

Temperature (T) = 30 °C + 273 = 303 K

Finally, we shall determine the pressure of the gas as illustrated below:

Volume (V) = 70.0 L

Number of mole (n) = 5 moles

Temperature (T) = 303 K

Gas constant (R) = 0.0821 atm.L/Kmol

Pressure (P) =?

PV = nRT

P × 70 = 5 × 0.0821 × 303

P × 70 = 124.3815

Divide both side by 70

P = 124.3815 / 70

P = 1.78 atm

Therefore, the pressure of the gas is 1.78 atm

The pressure of the gas in atmospheres if it's temperature is 30.0 degrees celcius is 1.77 atm.

Pressure of the given gas will be calculated by using the ideal gas equation as:

PV = nRT, where

P = pressure of chlorine gas = ?

V = volume of chlorine gas = 70 L

R = universal gas constant = 0.082 L.atm / K.mol

T = temperature chlorine = 30 degree celsius = 303 K

n is the moles of gas which can be calculated as:

n = W/M, where

W = given mass of chlorine gas = 355g

M = molar mass of chlorine gas = 70.9g/mol

n = 355/70.9 = 5 moles

On putting all these values on the above equation and calculate for P, we get

P = (5)(0.082)(303) / 70

P = 1.77 atm

Hence required pressure is 1.77 atm.

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Water does  not stick to the leaves of the plant  owing to the fact that the leaves has a waterproof cuticle.

We know that the leaves are the parts of the plant that are involved in photosynthesis. Photosynthesis is the process by which green plants produce their own food in the presence of sunlight and chlorophyll. We know that the leave has an outer protective covering.

The tissue that plays this outer covering of a plant for is the  epidermis and its waxy cuticle. It prevents damage to the plant.

Water does  not stick to the leaves of the plant  owing to the fact that the leaves has a waterproof cuticle.

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Answer:

The formula mass of Na2S04 is 142.04 g/mol

Answer:

142.04 g/mol

Explanation:

the formula Na2SO4 means:two moles sodium (45.98g), one mile sulfur (32.06g), and four moles oxygen (64.00g) combine to form one mole of sodium surface (142.04g).

Answer:

A and the answer if we can manage by its formula NaCl H2 but the answer is A

The empirical formula of the compound is Fe2O3 and its name is Iron(III) oxide or ferric oxide.

The oxide of iron has 70% of iron by mass.

This means that in every 100 grams of this oxide,70 grams is of iron and the other 30 grams are of oxygen.

To calculate the empirical formula, we have to first find the number of moles of iron and oxygen by dividing the given mass by their molar mass.

Moles of iron = 70/56 = 1.25 moles

Moles of oxygen = 30/16 = 1.875 moles

Now we need to divide the moles of iron and oxygen by the lowest common number i.e. 1.25

Moles of iron/1.25 = 1.25/1.25 = 1

Moles of oxygen/1.25 = 1.875/1.25 = 1.5

The ratio of iron(Fe): to oxygen(O) comes out to be 1:1.5.

Hence, we should multiply this ratio by 2 to get a whole number.

The ratio of Fe:O comes out to be 2:3.

Thus, the empirical formula of the compound is Fe2O3 and its name is Iron(III) oxide or ferric oxide.

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The correct way to describe the trend for increasing number of neutrons in the atom is that the number of neutrons increases faster than the number of protons.

The correct option is C.

The neutron is described as a subatomic particle, symbol n or n⁰ , which has a neutral charge, and a mass slightly greater than that of a proton.

The neutron is considered to have a  negative charge both in its inner core and its outer edge, with a positive charge sandwiched in between to make the particle electrically neutral.

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Option c, The correct method of removing a liquid chemical from a large bottle or container is to carefully pour a small amount of the liquid from the bottle into a beaker and then measure the necessary amount from the smaller container. method is considered to be a safe way to transfer liquids from large bottles or containers.

Additionally, it helps to avoid accidents that may occur when measuring or handling large bottles of liquids. Here is the main answer to the question: Option c is the correct method of removing a liquid chemical from a large bottle or container. The correct procedure is to pour a small amount of the liquid from the bottle into a beaker and then measure the necessary amount from the smaller container. Pouring the liquid directly into the reaction vial or flask without measuring the amount or haphazardly pouring the liquid into a graduated cylinder for direct measurement are not safe methods of transferring liquids from large bottles or containers because they can cause spills, accidents, and wastes.                                                                                                                                                                                                                 To remove liquid chemicals from large bottles or containers, it is essential to follow a safe and accurate method of transfer. Pouring the liquid directly into a reaction vial or flask without measuring the amount is not recommended because it can lead to spills and contamination, which can affect the accuracy and reliability of the experiment. Similarly, haphazardly pouring the liquid into a graduated cylinder for direct measurement is not advisable because it can lead to inaccurate measurements and wastes. To ensure a safe and accurate transfer of liquid chemicals, it is best to use a small pipet or carefully pour a small amount of the liquid from the bottle into a beaker and then measure the necessary amount from the smaller container. Using a pipet allows you to transfer precise volumes of liquid, while pouring into a beaker first makes it easier to measure the correct amount of liquid. Both methods are safe and can help to prevent accidents and wastes, which are crucial in a laboratory environment.

The correct method of removing a liquid chemical from a large bottle or container is to carefully pour a small amount of the liquid from the bottle into a beaker and then measure the necessary amount from the smaller container. This method is safe and accurate and helps to prevent accidents and wastes.

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3.3256 Liters

See the image I have shared to you above

Answer:

B. 7.2k

Explanation:

took the test ;)

A. The pressure of N₂O₄ in the reaction vessel would tend to fall under these conditions.

B. Yes, It is possible to reverse this tendency by adding NO₂.

a) This is because the dinitrogen tetroxide would be undergoing a reaction to form the equilibrium between N₂O₂ (g) and 2NO. The reaction would be shifting to the right, which would cause the pressure of N₂O₄ to go down.

b) This would cause the reaction to shift to the left, which would result in an increase in the pressure of N₂O₄. This is because the added NO₂ would increase the amount of reactants on the left side of the equation, which would cause the equilibrium to shift in that direction.

The increased pressure of N₂O₄ would then lead to a decrease in the amount of N₂O₄ and 2NO, thus leading to a decrease in pressure. Adding NO₂ would also result in an increase in the net amount of reactants in the system, which would also lead to an increase in pressure.

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2. The [OH¯] in the solution containing [H₃O⁺] = 5.70×10¯¹⁹ M is 1.75×10⁴ M

3. The [H₃O⁺] of a solution containing [OH¯] = 1×10¯⁵ M is 1×10¯⁹ M

This is simply a measure of the acidity / alkalinity of a solution.

The pH measures the hydrogen ion, H⁺ concentration while the pOH measures the hydroxide ion, OH¯ concentration

[H₃O⁺] × [OH¯] = 10¯¹⁴

From the question given above, the following data were obtained:

[H₃O⁺] × [OH¯] = 10¯¹⁴

Divide both sides by [H₃O⁺]

[OH¯] = 10¯¹⁴ / [H₃O⁺]

[OH¯] = 10¯¹⁴ / 5.70×10¯¹⁹

[OH¯] = 1.75×10⁴ M

[H₃O⁺] × [OH¯] = 10¯¹⁴

Divide both sides by [OH¯]

[H₃O⁺] = 10¯¹⁴ / [OH¯]

[H₃O⁺] = 10¯¹⁴ / 1×10¯⁵

[H₃O⁺] = 1×10¯⁹ M

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Answer:

See Explanation

Explanation:

We must remember that when a constraint such as a change in concentration, pressure or temperature is imposed on a reaction system in equilibrium, the equilibrium position will shift in such as way as to cancel the constraint.

If more of A or more of B is added to the system, the equilibrium position will shift towards the right and the solution becomes clear and colorless.

If C is added to the system, the equilibrium position will shift towards the left and the solution colour turns blue.

If A is removed from the system, the equilibrium position is shifted towards the left and the solution once again turns blue.

If C is removed from the system, the equilibrium shifts towards the right and the solution turns clear and colorless