is C3H6 an ionic or covalent bond?

The Friedel-Crafts acylation of bromobenzene using the acylium ion Formed in (a) proceeds via the following mechanism:

Formation of the acylium ion:

RCOCl + AlCl3 → RCO+ + AlCl4-

Coordination of the acylium ion with AlCl3:

RCO+ + AlCl3 → [RCO-AlCl3]+

Attack of the ortho carbon of bromobenzene on the electrophilic carbon of the acylium ion, forming a resonance-stabilized carbocation intermediate:

[RCO-AlCl3]+ + BrC6H4H → [RCO-C6H4-Br]+ + AlCl4-

Deprotonation of the carbocation intermediate by AlCl4-, forming the final product:

[RCO-C6H4-Br]+ + AlCl4- → RCO-C6H4-Br + AlCl3

Overall reaction:

RCOCl + BrC6H5 + AlCl3 → RCO-C6H4-Br + AlCl3

In this mechanism, the ortho carbon of bromobenzene acts as a nucleophile, attacking the electrophilic carbon of the acylium ion. The coordination of the acylium ion with AlCl3 helps to stabilize the positive charge on the carbocation intermediate. The final product is formed through deprotonation of the carbocation intermediate by AlCl4-

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The unknown quantity of gas is 1.23 moles.

To solve this problem, we can use the ideal gas law equation:

PV = nRT

where P is the pressure in atm, V is the volume in liters, n is the number of moles, R is the gas constant (0.0821 L·atm/mol·K), and T is the temperature in Kelvin.

First, we need to convert the temperature from Celsius to Kelvin:

T = 87.0°C + 273.15 = 360.15 K

Next, we can plug in the given values and solve for n:

(1.20 atm)(31.0 L) = n(0.0821 L·atm/mol·K)(360.15 K)

n = (1.20 atm)(31.0 L) / (0.0821 L·atm/mol·K)(360.15 K) = 1.23 mol

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Answer:

586 kpa(kilopascal/1000 pascals)

Explanation:

given 1.24 atm(standard atmosphere), and 66.7 psi(pound force per square inch).

To find the total pressure we should use dalton's law of partial pressures which is the sum of the pressures of each individual gas.

then we convert them to pascals and divide by 1000 to get the measurement in kilopascal.

knowing that 1 atmosphere is proportional to around 14.696 psi. We can multiply our given measure of atm by that and sum it by psi like so. 1.24×14.6959 = 18.22298.

Then,

18.22298+ 66.7 = 84.92298

psi.

Since 1 psi is proportional to around 6894.76 pascals. 1 psi will be 68.9476 kilopascal. 84.92298 * 6.89476 = 585.523336 ≈ 586

Answer:

D. Sweat evaporates from your skin

Explanation:

A physical change is a reversible process, no new substance is formed. A physical change does not affect the chemical composition of a substance.

Sweat evaporation from the skin is a physical change, because the change that occur is merely a change of state, Liquid to Gaseous state, no new substance is formed.

With carbon dioxide, the phase change that takes place when the temperature decreases from -40°C to -80°C at 2 atm is Option B. A gas changes to a solid.

When the temperature decreases from -40°C to -80°C at 2 atm, the pressure and temperature of the carbon dioxide falls within the region in the phase diagram where the substance changes from a gas to a solid. This process is called deposition or sublimation.

Therefore, the correct answer is as given above. It could then be concluded that the phase change that takes place when the temperature decreases from -40°C to -80°C at 2 atm is Option B. A gas changes to a solid.

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Answer:

1. 2+ (\(Cu^{2+}\)).

2. 0 (\(Cu^0\)).

Explanation:

Hello,

In this case, the described chemical reaction is a redox reaction in fact, since the oxidation states of both magnesium and copper change as shown due to the displacement:

\(Mg(s)+Cu(NO_3)_2(aq)\rightarrow Mg(NO_3)_2(aq)+Cu(s)\)

Therefore:

1. Since copper is the cation in the copper (II) nitrate, the (II) means that its charge is 2+ (\(Cu^{2+}\)).

2. Since copper is alone, it means no electrons are being neither shared not given, its charge is 0 (\(Cu^0\)).

Best regards.

At equilibrium, the number of moles of Cl2(g) present is approximately 347.37 mol.

To determine the number of moles of Cl2(g) at equilibrium, we need to use the given equilibrium constant (Kc) and set up an ICE table to track the changes in the reactants and products.

The balanced equation for the reaction is:

CO(g) + Cl2(g) ⇌ COCl2(g)

Let's set up the ICE table:

  CO(g)     +     Cl2(g)     ⇌     COCl2(g)

Initial: 0.3500 0.05500 0

Change: -x -x +x

Equilibrium: 0.3500 - x 0.05500 - x x

Using the equilibrium concentrations in the ICE table, we can write the expression for the equilibrium constant (Kc) as:

Kc = [COCl2(g)] / [CO(g)][Cl2(g)]

Substituting the values into the equation, we have:

1.2 × 10^3 = (0.05500 - x) / [(0.3500 - x)(0.05500 - x)]

Simplifying the equation, we can cross-multiply and rearrange:

1.2 × 10^3 × (0.3500 - x)(0.05500 - x) = 0.05500 - x

Expanding and rearranging, we get:

0 = (1.2 × 10^3 × 0.05500 - 1.2 × 10^3x + 0.05500x) - x

Simplifying further:

0 = 66 - 1.245x + 0.05500x - x

0 = 66 - 0.19x

0.19x = 66

x = 66 / 0.19

x ≈ 347.37

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First, find the molar mass of glucose.

• The molar mass of carbon is 12.01.

• The molar mass of hydrogen is 1.01.

• The molar mass of oxygen is 15.999.

There are 6 carbons, 12 hydrogens, and 6 oxygens. The molar mass of glucose is

The molar mass of glucose is 180.16 g/mol.

Now, we use dimensional analysis.

Therefore, there are 3.00x10^-10 grams of glucose.

This representation suggests that the element is phosphorus (P) with a mass number of 30, which is incorrect. The correct mass number for phosphorus is approximately 30.97. The incorrect representation for a neutral atom is 36Li

To determine the correct representation for a neutral atom, we need to consider the atomic number (Z) and mass number (A) of the element. The atomic number represents the number of protons in the nucleus, while the mass number represents the sum of protons and neutrons.

Let's analyze the given representations:

36Li:

This representation suggests that the element is lithium (Li) with a mass number of 36, which is incorrect. The correct mass number for lithium is approximately 6.94.

613C:

This representation suggests that the element is carbon (C) with a mass number of 13, which is correct. Carbon has different isotopes, and 13C represents one of its stable isotopes.

3063Cu:

This representation suggests that the element is copper (Cu) with a mass number of 63, which is correct. Copper has different isotopes, and 63Cu represents one of its stable isotopes.

1530P:

This representation suggests that the element is phosphorus (P) with a mass number of 30, which is incorrect. The correct mass number for phosphorus is approximately 30.97.

Therefore, the incorrect representation for a neutral atom is 36Li, as it does not match the known properties of lithium.

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The density of ammonia gas in the 6.0 L container at a pressure of 820 mm Hg is approximately 0.805 g/L.

To determine the density of ammonia gas (NH3) in a 6.0 L container at a pressure of 820 mm Hg, we need to use the ideal gas law equation, which relates pressure, volume, number of moles, and temperature for a given gas.

The ideal gas law equation is:

PV = nRT

Where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.

Since we are given the pressure (820 mm Hg), volume (6.0 L), and assuming standard temperature and pressure (STP), we can use the values for R (0.0821 L·atm/(mol·K)) and convert the pressure to atm by dividing by 760 (1 atm = 760 mm Hg).

820 mm Hg / 760 mm Hg/atm = 1.08 atm

Now we can rearrange the ideal gas law equation to solve for density (d):

d = (P * M) / (RT)

Where M is the molar mass of ammonia (NH3), which is approximately 17.03 g/mol.

Substituting the values, we have:

d = (1.08 atm * 17.03 g/mol) / (0.0821 L·atm/(mol·K) * 298 K)

Simplifying the equation, we find:

d ≈ 0.805 g/L

Therefore, the density of ammonia gas in the 6.0 L container at a pressure of 820 mm Hg is approximately 0.805 g/L.

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Explanation:

Because radioactive isotopes decay at a constant rate, they can be used like clocks to measure the age of the material that contains them. In this process, called radiometric dating, scientists measure the amount of parent isotope and daughter isotope in a sample of the material they want to date.

Answer:

Because radioactive isotopes decay at a constant rate, they can be used like clocks to measure the age of the material that contains them. In this process, called radiometric dating, scientists measure the amount of parent isotope and daughter isotope in a sample of the material they want to date.

Explanation:

Answer:

The answer is c. ( mutualistic ).

Explanation:

The relationship between cotton plants and wasps is an example of mutualism. The cotton plants provide a food source in the form of nectar for the wasps, and in return, the wasps serve as pollinators for the cotton plants, which helps the plants reproduce. This is a mutually beneficial relationship, as both species benefit from the interaction. Therefore, the answer is (c) mutualistic.

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Answer: what?

Explanation:

Answer: Huh?

Explanation:

Answer: Its B

Explanation:

The specific heat of the metal is 1.1106 J/g°C

Specific heat is the quantity of heat required to raise the temperature of one gram of a substance by one celsius degree

Here given data is

Mass of unknown metal = 23.8g

Temprature = 100°C

Mass of water = 50.0cm³ = 50 g

Temprature of water =  24.0°C

Final temprature of the system = 32.5°C

We have to find specific heat = ?

So first we determine the heat gain by water

Specific heat of water is 4.18 J/g°C

Q = mcΔT

Q =  50 g×8.5°C×4.18 J/g°C

Q = 1776.5 Joules

Then we determine the total heat lost by the unknown metal

Taking the specific heat f the metal to be x

Heat = 23.8g×67.5°C×x

1776.5 Joules = 23.8g×67.5°C×x

1776.5 Joules = 1606.5 J

x =  1606.5 J/1776.5 Joule

x = 1.1106 J/g°C

Specific heat of the metal is  1.1106 J/g°C

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Answer:

Electrochemical

Combustion

Photosynthesis

Respiration

Explanation:

Answer:

He proposed a model of the atom that consisted of a positively charged sphere with negatively charged electrons embedded in it. This model was later called the plum pudding model. Thomson’s discovery of the electron showed that atoms were not indivisible, as previously thought, but composed of smaller subatomic particles. His model also explained some phenomena such as cathode rays and electric currents. Thomson’s work helped advance our understanding of the structure and nature of the atom.

Explanation:

If you only have the percent composition of each element in a give compound, you can't determine yet the empirical formular for the compound. The problem is, the percent composition only gives relative numbers for each element. What can be determined is the empirical stochiometry of one element relative to the others.

For example, supose you have a compound with element X and Y, with the percent composition you can determine how much X you have relative to how much Y you have. Say you determine that for each 2 X you have 3 Y, the formula can be X₂Y₃ but it can also be X₄Y₆ or even othre possibilities.

To determine the empirical formula you need to know how many of one of the elements you have in each compound. A common way of getting the empirical formula is to use the percent composition and, in addition, the molar mass of the compound, which will make it possible to get the empirical formula from the relative ratios of each element you have.

Molar concentration of Zn2+ions in a solution is 3.481 mol/lit

The electrode potential value is 59mV

Temperature=298k

What is electrode potential?

equation formed- Zn → Zn2+ + 2e

              from Nernst equation-

E=E cell - 0.059 log [Zn2+]

[zn2+]=3.481 mol/lit

hence, Molar concentration of Zn2+ions in a solution is 3.481 mol/lit

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Answer:

C4H9

Explanation:

If H = 15.88%

Then C = 100.00 – 15.88 = 84.12

Divide each % value by respective atomic mass

H = 15.88/1 = 15.88

C = 84.12/12 = 7.01

Divide through by smaller value

H = 15.88/7.01 = 2.26

C = 7.01/7.01 = 1

Remove fraction , multiply by 4

H = 9

C = 4

Empirical formula = C4H9

The hydrocarbon could be ( C4H9)2 = C8H18 = octane.

There are 3.33 moles of \(C_{2}H_{4}\) in the mixture.

The balanced chemical equation for the combustion of methane and ethene is:

\(CH_{4} + 2O_{2} = CO_{2} + 2H_{2}O\\C_{2}H_{4} + 3O_{2} = 2CO_{2} + 2H_{2}O\)

From the equation, we can see that for every mole of \(C_{2}H_{4}\), 3 moles of O2 are needed. Therefore, to burn 10 moles of O2, we need:

10 moles \(O_{2}\)x (1 mole \(C_{2}H_{4}\)/3 moles \(O_{2}\)) = 3.33 moles \(C_{2}H_{4}\)

So, there are 3.33 moles of \(C_{2}H_{4}\) in the mixture.

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The mass of H2 produced is 0.657 g.

Generally, The balanced equation is:

2 HCl → H2 + Cl2

The molar mass of HCl is 36.5 g/mol (1+35.5).

First, we need to determine the number of moles of HCl:

23.8 g HCl × (1 mol HCl/36.5 g HCl) = 0.651 mol HCl

From the balanced equation, we can see that 2 moles of HCl produce 1 mole of H2:

2 mol HCl → 1 mol H2

So, we can calculate the number of moles of H2 produced:

0.651 mol HCl × (1 mol H2/2 mol HCl) = 0.326 mol H2

Finally, we can use the molar mass of H2 to convert the number of moles of H2 to grams:

0.326 mol H2 × 2.016 g H2/mol = 0.657 g H2

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Hello there!

Aspartame has 4 kilocalories of energy per gram and table sugar has 3.9 kilocalories. They are pretty much same but aspartame is 200 times sweeter than sucrose so probably would be aspartame that has more calories.

The cation is \(V^3^+\) and the anion is \(Cl^-\) in \(VCl_3\).

An ionic compound is a chemical compound made up of charged ions called cations and anions that are held together by electrostatic forces.

Cations are elements with one or more positive charges because they have more number of protons than electrons.

Anions are elements with one or more negative charges because they have more number of electrons than protons.

An ion which has lost electrons and now has a positive net charge is said to be a cation. An atom's cation is smaller than the neutral atom because electrons are taken out to produce a cation.

An ion which has acquired electrons and now has a negative net charge is called an anion. The anion of an atom is larger than the neutral atom because electrons have been added to produce it.

In Vanadium (III) chloride, vanadium gives 3 electrons and become +3 charge and chlorine gains 1 electron and become -1 charge. Since 3 electrons are given by vanadium, 3 chlorine atoms are bonded, thus the compound is \(VCl_3\).

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The wavelength of UV light in metres is 3.16 x 10-7 m.

The distance between two adjacent peaks on a wave, which is usually measured in nanometers (nm) or metres, is the wavelength of an ultraviolet light beam (m).

In this instance, the wavelength is specified as 316 nanometers. Since 1 nanometer is equal to 10-9 metres, we must double this to get the equivalent in metres.

As a result, the wavelength of UV light in metres is

316 nm x 10-9 m/nm = 3.16 x 10-7 m.

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