describe how infrared spectroscopy could be used to determine when the addition of br2 to 1-pentene had gone to completion.

The number of moles of oxygen gas in the container would be 0.12 mol.

The ideal gas equation is written as follows:

PV = nRT

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

In this case, we are looking of n, which is the number of moles of the gas.

Making n the subject of the ideal gas equation:

n = PV/RT

Substituting the values:

n = (1x3)/(0.082x300)

   = 0.12 mol

In other words, the number of moles of the oxygen gas in the container is 0.12 mol.

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Heterogeneous and homogeneous mixtures are the two types of mixtures.

When compared to homogeneous mixtures, heterogeneous mixtures can be visually divided into individual components. The most prevalent kind of homogeneous mixture is a solution, which can be a solid, liquid, or gas.

Solid, liquid, or gaseous homogeneous mixtures can exist. They are uniform in both appearance and chemical make-up. Water, air, steel, detergent, saltwater mixture, and other substances are examples of homogeneous mixtures. When two or more metals are combined in a specified proportion, an alloy is created.

A combination is said to be heterogeneous if its composition is not constant throughout. Vegetable soup is a complex concoction.

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Answer:

jellyfish

Explanation:

Answer: i would say jellyfish

Explanation:

just because this guy said so

Answer:

Universe, galaxy, solar system, star, planet, moon and asteroid.

Explanation:

You're welcome!

The absorptiometric determination of acid-soluble lignin is a method used to measure the amount of lignin in semichemical bisulfite pulp, as well as in certain woods and plants. This method involves measuring the absorption of light by the lignin in a sample.

To determine acid-soluble lignin using this method, you would first prepare a sample of the pulp, wood, or plant material. This can involve extracting the lignin using acid or other solvents. Once the sample is prepared, you would then measure its absorbance using a spectrophotometer.

The absorbance of the sample is directly proportional to the amount of lignin present. By comparing the absorbance of the sample to a standard curve, which relates known concentrations of lignin to their absorbance values, you can determine the concentration of lignin in the sample.

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Answer:

For every force one object applies on another, there

is an equal force applied in the opposite direction.

Explanation:

please mark brainliest here

Answer:

Diffusion and Dispersion.

Explanation:

The two processes that took place in the given experiment are Diffusion and Dispersion.

When a crystal of potassium magnet is added placed in the bottom of a beaker which contains cold water, after 5 minutes the particles of potassium magnet will diffuse with water through diffusion process and the colour of water turns purple.

After few hours, the colour of solution goes light purple because the tiny particles which were diffused earlier will dispersed in the water and the particles will spread and make the solution lighter in colour.

Hence, the two processes are Diffusion and Dispersion.

Answer:

A is mg because it is losing 2 electrons

B is N2

C Mg as oxidation is lose of electrons

D is N2 as reduction is gain of electrons

Explanation:

you can easily remember as OIL RIG in term of electrons as Oxidation is Lost of electrons. Reduction is Gain of electrons.

The following regarding sodium is accurate When an ion is positively charged, it is the most stable.

In case you forgot, ions are the name for atoms that have either positive or negative charges.A negatively charged atom known as an anion is one that has gained one or even more electrons.A positively charged atom is known as a cation when one or more of its electrons have been lost.It turns into sodium quizlet when an atom loses an electron.

Due to the fact that sodium has fewer electrons than protons, when it loses an electron, it changes from a neutral ion to a positively charged cation.

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Answer:

Any two reasons will be :

1:- It is based on atomic number.

2:-Problem regarding Position of isotopes is resolved.

Hope this helped

Hope this helped ALL THE BEST !!

Answer:

The modern periodic table has more info and more elements

Explanation:

Answer:

Large leaves help plants to receive more sunlight when in tropical rainforests.

Water is a good coolant for machinery and engines because of its high specific heat.

The specific heat of a substance is the amount of energy required to raise the temperature of one gram of the substance by one degree Celsius or Kelvin. The specific heat of water is 4.184 J/g°C, which is relatively high compared to other liquids.

As a result, water is an excellent coolant for machinery and engines because it can absorb a large amount of heat without significantly raising its own temperature.

Hence, water is a good coolant for machinery and engines because of its high specific heat.

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A chemical equation is a symbolic representation of a chemical reaction where reactants are represented on the left, and products on the right.

A chemical equation is said to be balanced when the number of atoms of each element on both sides of the equation are the same.

According to this question, chlorine gas reacts with pottasium iodide to produce iodine and pottasium chloride as follows:

Cl₂ + 2KI → 2KCl + I₂

Therefore, the answers to the questions are as indicated in the main answer part.

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Answer:

1. 31.68 moles of water, H₂O

2. 14.81 moles of Cr

Explanation:

1. Determination of the number of mole of water, H₂O.

The balanced equation for the reaction is given below:

C₁₂H₂₂O₁₁ —> 12C + 11H₂O

From the balanced equation above,

1 mole of C₁₂H₂₂O₁₁ produced 12 moles of C and 11 moles of H₂O.

Next, we shall determine the number of mole C₁₂H₂₂O₁₁ needed to produce 34.55 moles of C. This can be obtained as follow:

From the balanced equation above,

1 mole of C₁₂H₂₂O₁₁ produced 12 moles of C.

Therefore, Xmol of C₁₂H₂₂O₁₁ will produce 34.55 moles of C i.e

Xmol of C₁₂H₂₂O₁₁ = 34.55 / 12

Xmol of C₁₂H₂₂O₁₁ = 2.88 moles

Thus, 2.88 moles of C₁₂H₂₂O₁₁ is needed.

Finally, we shall determine the number of mole of water, H₂O produced from the reaction. This can be obtained as follow:

From the balanced equation above,

1 mole of C₁₂H₂₂O₁₁ produced 11 moles of H₂O.

Therefore, 2.88 moles of C₁₂H₂₂O₁₁ will produce = 2.88 × 11 = 31.68 moles of H₂O.

Thus, 31.68 moles of water, H₂O were obtained from the reaction.

2. Determination of the number of mole of Cr needed.

The balanced equation for the reaction is given below:

Cr + H₂SO₄ —> CrSO₄ + H₂

From the balanced equation above,

1 mole of Cr reacted to produce 1 mole of CrSO₄.

Finally, we shall determine the number of mole of Cr needed to produce 14.81 moles of CrSO₄. This can be obtained as follow:

From the balanced equation above,

1 mole of Cr reacted to produce 1 mole of CrSO₄.

Therefore, 14.81 moles of Cr will also react to produce 14.81 moles of CrSO₄.

Thus, 14.81 moles of Cr is needed for the reaction.

The final temperature of a 10.0 g piece of iron initially at 25°C, if supplied with 9.5 J from a stove, is 27.11°C. The change in temperature of the iron is 2.11°C.

We can use the formula:

Q = mcΔT

where Q is the heat absorbed by the iron, m is the mass of the iron, c is the specific heat capacity of iron, and ΔT is the change in temperature.

In this case, the heat absorbed by the iron is 9.5 J, the mass of the iron is 10.0 g, the specific heat capacity of iron is 0.450 J g^(-1) °C^(-1), and the initial temperature is 25°C. We want to find the final temperature.

Let's rearrange the formula to solve for ΔT:

ΔT = Q / mc

Substituting the given values, we get:

ΔT = (9.5 J) / (10.0 g x 0.450 J g^(-1) °C^(-1))

ΔT = 2.11 °C

Therefore, the change in temperature of the iron is 2.11°C.

To find the final temperature, we add the change in temperature to the initial temperature:

T_final = T_initial + ΔT

T_final = 25°C + 2.11°C

T_final = 27.11°C

Therefore, the final temperature of the iron is 27.11°C.

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Answer: In the Bohr model of the atom, the principal quantum number (n) describes the energy level of the electron, and the azimuthal quantum number (l) describes the angular momentum of the electron. The allowed values of l for a given value of n are integers ranging from 0 to (n-1). Therefore, for the second principal level (n = 2), the possible values of l are:

l = 0, 1

So the allowed values of l for the second principal level are 0 and 1. Note that the value of l also determines the shape of the orbital, with l = 0 corresponding to an s orbital and l = 1 corresponding to a p orbital.

Explanation: In the Bohr model of the atom, the principal quantum number (n) describes the energy level of the electron, and the azimuthal quantum number (l) describes the angular momentum of the electron. The allowed values of l for a given value of n are integers ranging from 0 to (n-1). Therefore, for the second principal level (n = 2), the possible values of l are:

l = 0, 1

So the allowed values of l for the second principal level are 0 and 1. Note that the value of l also determines the shape of the orbital, with l = 0 corresponding to an s orbital and l = 1 corresponding to a p orbital.

The correct order of the increasing polarity of the analyte functional group isEthers < Esters.

The given statement is "Polarities of analyte functional group increase in the order of hydrocarbon ethers < esters."  The order of polarities of functional groups is the order of their increasing polarity (i.e., less polar to more polar) based on their electron-donating or withdrawing ability from the rest of the molecule.Polarity of analyte: The analyte's polarity is directly proportional to the dipole moment of the functional group, which is associated with a difference in electronegativity between the atoms that make up the functional group.The electronegativity of an element is its ability to attract electrons towards itself. The greater the difference in electronegativity between two atoms, the more polar their bond, and hence the greater the polarity of the molecule.

To find the correct order of the increasing polarity of the analyte functional group, let's first compare the two groups: hydrocarbon ethers and esters. Here, esters have a carbonyl group while ethers have an oxygen atom with two alkyl or aryl groups. The carbonyl group has more electronegative oxygen, which pulls electrons away from the carbon atom, resulting in a polar molecule. On the other hand, ethers have a less polar oxygen atom with two alkyl or aryl groups, making them less polar than esters. Therefore, the correct order of the increasing polarity of the analyte functional group isEthers < Esters.

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The general formula for alkenes and alkynes are cnH2n and cnH2n-2, respectively.

Alkenes are hydrocarbons with a double bond made of carbon and carbon (C=C). Alkenes have the generic formula cnH2n, where "n" stands for the molecule's number of carbon atoms.

In an alkene, each carbon atom is joined to two hydrogen atoms, two other carbon atoms, and one oxygen atom.

For instance, ethene (commonly known as ethylene), which contains two carbon atoms, has the general formula C2H4.

Alkynes are hydrocarbons with a triple bond made of carbon and carbon. Alkynes have the generic formula cnH2n-2. Similar to alkenes, the letter "n" designates how many carbon atoms are present in the molecule. In an alkyne, each carbon atom is joined to one hydrogen atom and one additional carbon atom.

For instance, the usual formula for ethyne, which also goes by the name acetylene and includes two carbon atoms, is C2H2.

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Answer: the answer is b

Explanation:

Answer:

Explanation:

B answer

Answer:

Some physical properties of water:

Of course, there are many more but these are some common ones.

Concern of the survey method of research is : 3.)the researcher is dependent on the person answering the survey to be honest.

One concern of the survey method of research is that the researcher is dependent on the person answering the survey to be honest. There is a risk that participants may provide inaccurate or incomplete responses due to range of factors such as social desirability bias, memory recall issues, or misunderstanding of questions.

Therefore, option 3)the researcher is dependent on the person answering the survey to be honest is the most accurate answer.

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Answer:

the charge of an element is equal to the number of orotons minus the number of electrons. the number if proton is equal to the number of elements given in the periodic table. the number of electrons is equal to the atomic numver minus the CHARGE of the atom

Answer:yes they do represent

In this question, we need to determine what will be the nuclear equation for the Beta decay of Lead - 210.

Beta decay is a type of radioactive decay in which we will have either a neutron becoming a proton, this will be called Beta-minus decay or a proton becoming a neutron, this will be called a Beta-plus decay

In the case of Pb-210, we will have a Beta-minus decay, and one neutron will become a proton:

210/82 Pb ---> 210/83 Bi + electron

Lead - 210 will become Bismuth - 210

Answer:

Nothing

Explanation:

BECAUSE DONT ASK

Answer: Ionic attractions

Explanation:

Ionic bonding is a type of chemical bond that involves the electrostatic attraction between oppositely charged ions.