On treatment with dilute H2​SO4​, ethene forms ethanol.O TrueO False

Nitration of chlorobenzene has a reaction rate that is slower than the nitration rate of benzene and gives primarily the meta-substituted product(s).

The nitration of chlorobenzene is slower compared to the nitration of benzene due to the presence of the electron-withdrawing chlorine atom. Chlorine's electron-withdrawing nature reduces the electron density on the benzene ring, making it less reactive towards electrophilic substitution reactions like nitration.

The nitration reaction involves the substitution of a nitro group (-NO2) for a hydrogen atom on the benzene ring. In the case of chlorobenzene, the chlorine atom directs the incoming nitro group to the meta position, resulting in the formation of the meta-substituted product as the major product.

This is because chlorine is a meta-directing group, meaning it favors substitution at the meta position relative to the chlorine atom. Overall, the nitration of chlorobenzene is slower and leads to the predominant formation of the meta-substituted product.

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The density of the unknown substance in ng/µm³ is 0.000983 ng/µm³.

Density refers to the amount of mass contained in a given volume of a substance. It is a physical property of matter that describes how closely packed the particles are in a substance. Mathematically, density is calculated by dividing the mass of an object by its volume, and is expressed in units of mass per unit volume (such as grams per cubic centimeter, or kilograms per liter).

To convert the density from g/cm³ to ng/µm³, we need to use the following conversion factors:

1 g = 1,000,000,000 ng (or 1 x 10⁹ ng)
1 cm³ = 1,000,000,000,000 µm3 (or 1 x 10¹² µm³)

So, we can multiply the density by these conversion factors to get the density in ng/µm³:

0.983 g/cm³ x (1 x 10⁹ ng / 1 g) x (1 cm³ / 1 x 10¹² µm³) = 0.000983 ng/µm³

Therefore, the density of the unknown substance in ng/µm³ is 0.000983 ng/µm³.

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Answer:

Activation energy is called the energy required to initiate a chemical reaction.

Explanation:

Oxygen gas is most likely to act as an ideal gas at STP. Therefore, option B is correct.

An ideal gas is a hypothetical gas composed of randomly moving point particles without interparticle interactions. The ideal gas is useful because it follows the ideal gas law.

Under various conditions of temperature or pressure, many real gases behave like an ideal gas where the gas molecules as the ideal particles. Many gases such as nitrogen gas, oxygen gas, hydrogen gas, noble gases, some heavier gases such as carbon dioxide, and mixtures such as air, can be treated as ideal gases.

A gas behaves more likely as an ideal gas at higher temperature and lower pressure, as the potential energy because intermolecular forces become less and the size becomes less significant compared to the vacant space between them.

One mole of an ideal gas has a volume of 22.7 liters at standard temperature and pressure. At high pressures, the volume of a real gas is generally larger than that of an ideal gas.

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Answer:(:

Explanation:

An example of the solar system is the eight planets including Earth that revolve around the sun. The sun together with the eight planets and all other celestial bodies that orbit the sun. A system of planets or other bodies orbiting a star. That portion of our galaxy which is subject to the gravity of the sun

Answer:

It's called air resistance.

Explanation:

While it may seem hard to believe at first, all objects in free fall accelerate at the same rate regardless of their masses. Objects falling through air experience a type of fluid friction called air resistance.

Answer:

thermal energy: the part of total internal energy that can be transferred (a portion of the kinetic energy)

heat is the thermal energy that flows from one substance to another due to a temperature difference.

Thermal energy is measured in temperature change.

Thermal energy transfer stops when thermal equilibrium is achieved (Both substances at the same temperature).

conduction: Transfer of thermal energy through a solid object like heat transferring up a metal spoon from a hot cup of coffee.

convection: the transfer of thermal energy due to the movement of a liquid or gas caused by differences in temperature. Only in a fluid (liquid or gas). Breezes, ocean currents.

radiation: Transfer energy with or without matter. Warming from the Sun, microwave oven.

Answer:

Conduction is the transfer of thermal energy through direct contact. Convection is the transfer of thermal energy through the movement of a liquid or gas. Radiation is the transfer of thermal energy through thermal emission. Hope this helps!

Explanation:

Answer:

I think C is the answer

Explanation:

because Mitosis results in two identical daughter cells......

The reverse of the process of sublimation is deposition.

Sublimation is a genre of phase remodeling that takes the spot when a solid turns straightway into a gas, bounding the liquid phase. The contrary of sublimation is vapor deposit. The tenure" sublimation" simply applies to a physical modification of state and not to the metamorphosis of a solid into hot air during a chemical reaction

The deposition is when stuff in gas configuration changes states to come a solid. The gassy material gets deposited( generally as chargers) bypassing the middling liquid state. An illustration of deposition is when water vapor in the atmosphere changes straightway into ice, similar to the configuration of frost.

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Answer:

i am quite unsure what you want me to answer but if you explain it to me w ould live to help

Explanation:

Explanation:

So there are two aluminum atoms, three sulfur atoms, and 12 oxygen atoms in a single unit of the compound Al2(SO4)3. This sums to 17. Therefore, there are 17 atoms in a single unit of the compound Al2(SO4)3

Answer:

NaOH

Explanation:

Sodium hydroxide is the base in the acid-base reaction as all other acids and sodium chloride is salt and water is neutral.

According to the Arrhenius concept, base is defined as a substance which yields hydroxyl ions on dissociation.These ions react with the hydrogen ions of acids to produce salt in an acid-base reaction.

Bases have a pH higher than seven as they yield hydroxyl ions on dissociation.They are soapy in touch and have a bitter taste.According to the Lowry-Bronsted concept, base is defined as a substance which accepts protons .Base react violently with acids to produce salts .Aqueous solutions of bases can be used to conduct electricity .They can also be used as indicators in acid-base titrations.

They are used in the manufacture of soaps,paper, bleaching powder.Calcium hydroxide ,a base is used to clean sulfur dioxide gas while magnesium hydroxide can be used as an antacid to cure acidity.

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The maximum amount of Al₂O₃ that can be produced in this reaction is 1.00 kg, which confirms that aluminium is the limiting reactant.

To determine if aluminium is the limiting reactant in this reaction, we need to first calculate the theoretical yield of the reaction using both reactants.

From the balanced equation, we can see that for every 2 moles of aluminium, we need 1 mole of iron oxide.

1.00 kg of aluminium has a mass of 1000 g / 27 g/mol = 37.04 moles.

3.00 kg of iron oxide has a mass of 3000 g / (2 x 56 g/mol + 3 x 16 g/mol) = 13.39 moles.

Since we need half as many moles of iron oxide as aluminium for the reaction, the aluminium is the limiting reactant.

To calculate the theoretical yield of the reaction, we need to use the amount of aluminium as the limiting factor.

Since the balanced equation shows that 2 moles of aluminium react to produce 1 mole of Al₂O₃, we can calculate the theoretical yield of Al₂O₃ as:

37.04 moles Al x (1 mol Al₂O₃ / 2 mol Al) x (2 x 27 g/mol Al₂O₃) = 999.5 g or 1.00 kg (rounded to two significant figures).

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Answer:

The new volume of the gas is \(0.53L\)

Explanation:

Given:

\(T_1=300K\\P_1=1bar\\V_1=1.2L\\T_2=1200K\\P_2=9bars\\V_2=?\)

By combined gas law,

\(\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}\)

\(\frac{1 \times 1.2}{300}=\frac{9 \times V_2}{1200}\)

\(\frac{1.2}{300}=\frac{9V_2}{1200}\)\(V_2=\frac{1.2 \times 1200}{9 \times 300} =\frac{4.8}{9} =0.53L\)

Thus, the changed volume will be \(0.53L\)

The density of a substance is defined as its mass per unit volume. To calculate the density of mercury, we can use the formula: Density = Mass / Volume. Given that the mass of 205 ml of mercury is 2790 g, we can substitute these values into the formula:

Density = 2790 g / 205 ml

Calculating this, we find:

Density ≈ 13.6 g/ml

Rounding this value to the nearest 0.1 g/ml, we get:

Density ≈ 13.6 g/ml

Therefore, the density of mercury is approximately 13.6 g/ml. This means that for every milliliter of mercury, it has a mass of approximately 13.6 grams. The density of mercury is relatively high, which is why it is commonly used in barometers and thermometers.

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The answer is B, darling

Hope this helps

70.9-gram sample of \(Cl_{2}\) gas will occupy Opton C. 22.4 liters at STP.

To determine the volume occupied by the sample of \(Cl_{2}\) (g) at STP, we can use the ideal gas law equation, PV = nRT

where P = pressure

V = volume

n = number of moles

R = ideal gas constant

T = temperature.

At STP (Standard Temperature and Pressure), the pressure is 1 atmosphere (atm) and the temperature is 273.15 Kelvin (K).

First, calculate the number of moles of \(Cl_{2}\) (g) using its molar mass. The molar mass  \(Cl_{2}\) is 70.9 grams/mol.

Number of moles (n) = mass (m) / molar mass (M)

n = 70.9 g / 70.9 g/mol

n = 1 mol

Now, we can calculate the volume using the ideal gas law:

V = (nRT) / P

V = (1 mol * 0.0821 L·atm/mol·K * 273.15 K) / 1 atm

V ≈ 22.4 L

Therefore, the correct answer is C. 22.4 L.

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The first ionization energies of the elements increases as you go from left to right across a period of the periodic table, and as you go from the bottom to the top of a group in the table, atomic radius increases.

A chemical element's atomic radius, which is typically the average or typical distance between the nucleus's core and the outermost isolated electron, serves as a gauge for the size of an atom.

There are numerous non-equivalent definitions of atomic radius, since the border is not a clearly defined physical entity.

As we move across a row of the periodic table from left to right, the initial ionization energy rises. In the periodic table, the initial ionization energy falls as we move down a column.

Thus, option A is correct.

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Determine quantitative density of a liquid whose mass is 62 g and whose volume is 31 mL. A block or wood with the dimensions 3 cm x 2 cm x 5 cm and a heft of 22.5 g (2 g/mL)

How do you calculate a block of wood's volume?

Result for an image A timber block weighs 22.5 grammes and has dimensions of 3 cm x 2 cm x 5 cm. What is that?

It is simple to determine the volume of such a block, prism, a cylinder by multiplying the base's area by the object's height or altitude.

How is block mass determined?

Multiply the volume and density together.

You may get the mass of your object by multiplying your two numbers together. You'll notice that you end up having units of mass if you keep track of both the units as you go along (kilograms or grams). A diamond, for instance, has a volume of 5,000 cm3 and a density of 3.52 g/cm3.

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Determine quantitative density of a liquid whose mass is 62 g and whose volume is 31 mL. A block or wood with the dimensions 3 cm x 2 cm x 5 cm and a heft of 22.5 g (2 g/mL)

Result for an image A timber block weighs 22.5 grammes and has dimensions of 3 cm x 2 cm x 5 cm. What is that?

It is simple to determine the volume of such a block, prism, a cylinder by multiplying the base's area by the object's height or altitude.

Multiply the volume and density together.

You may get the mass of your object by multiplying your two numbers together. You'll notice that you end up having units of mass if you keep track of both the units as you go along (kilograms or grams). A diamond, for instance, has a volume of 5,000 cm3 and a density of 3.52 g/cm3.

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Answer:

Yes.

Explanation:

A combination reaction can be a redox reaction.

Example; C + O2 = CO2

Answer:

anticyclone

Explanation:

Answer:

Tungsten

Explanation:

Answer:

the last one it increases number of collisions by speeding up the particle motion

Explanation:

the more thermal energy something it has the faster particles move

Answer:

The properties of a solid are that they form at a low temperature, particles have long range order meaning that the particles are fixed in place, the particles have a defined shape and volume, the solid particles are a low-energy state of matter, and solid particles are dense and incompressible. But on the other hand plasma particles form at high temperatures, plasma particles have short range order meaning that the plasma particles have little interaction, plasma particles fill all available space meaning plasma particles have no fixed shape or volume, plasma particles are the highest energy-state of matter, plasma particles are highly compressible, and plasma particles conduct electricity extremely well.

Explanation:

Plasma particles also form at high temperatures, have short-range order, fill all available space, and are the highest energy state of matter.

The matter is anything that occupies space. There are three states of matter. Solid, liquid, and gases. The fourth state of matter is plasma.

A solid has the following characteristics:

However, plasma particles are the highest energy state of matter, they are highly compressible, they have short-range order, which means that they have little interaction, and they have excellent electrical conductivity.

Plasma particles also form at high temperatures:

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The statement the water in the cup will have the same amount of heat (thermal energy) as the water in the container is true ,therefore option C is correct.

Thermal energy refers to the energy contained within a system that is responsible for its temperature. Heat is the flow of thermal energy.

The SI unit of thermal energy is the joule (J). It is the energy contained within the system, excluding the kinetic energy of motion of the system as a whole and the potential energy of the system.

The statement the water in the cup will have the same amount of heat (thermal energy) as the water in the container is true ,hence, option C is correct.

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Chemical reactions tend to speed up when the concentration of the reactants is increased because all of the above apply. The correct option is d.

When the concentration of reactants is increased, several factors contribute to an increase in the reaction rate.

Firstly, as the concentration of reactants increases, the reactant particles become more crowded, leading to a higher frequency of collisions between them. The more often reactant particles collide, the greater the chances of successful collisions that result in the formation of products. Therefore, an increase in reactant concentration leads to an increase in the collision rate, which can accelerate the reaction.

Secondly, an increase in concentration also means a higher number of reactant particles present in the reaction mixture. This results in an increased likelihood of reactant particles having sufficient energy to overcome the activation energy barrier required for the reaction to occur. As a result, a larger proportion of reactant particles will possess the necessary energy, leading to a higher reaction rate.

Lastly, an increase in concentration generally means a higher number of particles per unit volume. This increased density of reactant particles can lead to more frequent and energetic collisions, as the particles are in closer proximity. The increased energy of collisions further promotes successful reactions and accelerates the overall reaction rate.

In summary, when the concentration of reactants is increased, the reactants collide more often due to increased crowding, move faster due to higher energy, and have greater energy overall. These combined effects contribute to the acceleration of chemical reactions. Therefore, All of the above apply. Option d. is the correct answer.

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Answer:

Explanation:

its true

hope this helps

plz mark as brainliest!!!!!

Answer:

True

Explanation:

Answer:

base

Explanation:

carbonic acid - H2CO3 - is a weak acid. Therefore, HCO3 itself is its conjugate base. The Na(sodium) ion is neutral.

This means that NaHCO3 is a base. (a weak one)

The two step synthesis 2‑hydroxy‑2,4‑dimethyl pentanoic acid of involves compounds as represented in the attached image.

From the task content:

It therefore follows that the Starting compound A and intermediate compound B are as represented in the attached image.

Remarks: The reagents provided are, H3O, Potassium cyanide and Hydrogen cyanide.

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The classification of each molecule according to its functional group is as follows:

1. alcohol: H₃C–CH₂–OH

2. alcohol: H–C–CH₂–CH₃

3. amine: H₃C–NH–CH₂–CH₃

4. ketone: H₃C–CH₂–C–NH₂

5. carboxylic acid: H–C–CH₂–CH₂–C–OH

6. halide: H₃C–CH–CH₂–CH₃

7. aldehyde: H₃C–CH₂–O–CH₃

8. ketone: H₃C–CH₂–C–NH₂

What is a functional group?

A functional group is a specific group of atoms within a molecule that determines its chemical behavior and properties. It imparts characteristic reactivity and functional properties to the molecule. Functional groups often participate in chemical reactions, influencing the overall behavior and functionality of the compound.

1. The molecule H₃C–CH₂–OH has the hydroxyl functional group (-OH) attached to a carbon atom, indicating it is an alcohol.

2. The molecule H–C–CH₂–CH₃ has the alkyl group (-CH₂–CH₃) attached to a carbon atom, indicating it is also an alcohol.

3. The molecule H₃C–NH–CH₂–CH₃ has the amino group (-NH₂) attached to a carbon atom, indicating it is an amine.

4. The molecule H₃C–CH₂–C–NH₂ contains the carbonyl group (C=O), making it a ketone.

5. The molecule H–C–CH₂–CH₂–C–OH has the carboxyl group (-COOH) attached to a carbon atom, indicating it is a carboxylic acid.

6. The molecule H₃C–CH–CH₂–CH₃ contains the halogen (Br) attached to a carbon atom, making it a halide.

7. The molecule H₃C–CH₂–O–CH₃ contains the carbonyl group (C=O) at the end of the carbon chain, indicating it is an aldehyde.

8. The molecule H₃C–CH₂–C–NH₂ contains the carbonyl group (C=O), making it a ketone.

These classifications are based on the presence of specific functional groups in each molecule, which determine their chemical properties and reactivity.

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