the reaction a(g) ⇌ b(g) has an equilibrium constant that is less than one. what can you conclude about ∆g° for the reaction?

Answer:

i think the answer is C

Explanation:

if wrong im sorry

The comparison of the IR spectra of cyclohexanol and cyclohexane can help identify the key peaks related to their functional groups. The absence of the O-H peak and the appearance of the C=C peak in the IR spectrum of cyclohexene support the formation of the double bond during the dehydration reaction.

Cyclohexanol and cyclohexane are two organic compounds that have distinct infrared spectra. Cyclohexanol is an alcohol with a hydroxyl (-OH) functional group, while cyclohexane is a hydrocarbon with no functional groups.

In the IR spectrum of cyclohexanol, the key peak that is related to the hydroxyl group is a broad, intense peak around 3400 cm-1. This peak is due to the stretching vibration of the O-H bond. Another peak that is present in the spectrum is around 1050 cm-1, which is attributed to the C-O stretching vibration.

On the other hand, the IR spectrum of cyclohexane does not show any peaks related to functional groups. The spectrum is dominated by peaks due to the C-H stretching vibrations. The most intense peaks are observed around 2950 and 2850 cm-1, which are attributed to the symmetric and asymmetric stretching vibrations of the C-H bonds, respectively.

When cyclohexanol is dehydrated to form cyclohexene, the hydroxyl group is eliminated, resulting in the formation of a double bond between two adjacent carbon atoms. This process can be monitored by IR spectroscopy, which can detect changes in the functional groups and the overall molecular structure.

The key difference between the IR spectra of cyclohexanol and cyclohexene is the absence of the O-H peak in the spectrum of the product. Instead, a new peak appears around 1650 cm-1, which is attributed to the C=C stretching vibration of the double bond. This peak is absent in the spectrum of the starting material, indicating that the formation of the double bond has occurred.

In conclusion, the comparison of the IR spectra of cyclohexanol and cyclohexane can help identify the key peaks related to their functional groups. The absence of the O-H peak and the appearance of the C=C peak in the IR spectrum of cyclohexene support the formation of the double bond during the dehydration reaction.

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1) This is an endothermic process

2) Heat can be absorbed, certainly.

3) Take into account the ensuing thermochemical equation.

    4 FeO(s) + O2 from 2 Fe2O3(s) (g) ΔH = 560 kJ

   The process is endothermic because H > 0.

    We can determine the relationships shown below.

    The reaction between two moles of Fe2O3 absorbs 560 kJ.

     Fe2O3 has a molar mass of 160 g/mol.

    Let's say that 94.2 g of Fe2O3 react. Heat that is taken in is:

    94.2g.(1mol/160g). (2mol/560kJ) = 164.85kJ

Exothermic refers to chemical reactions that release energy. When bonds are created in the products of exothermic processes, more energy is produced than is required to break the bonds between the reactants. Endothermic refers to chemical reactions that either use or absorb energy.

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Answer:

4 atoms of Hydrogen

1 atom of Sulphur

4 atoms of Oxygen

hope it helps you

make me brainliest plz

Answer:

To make 250 ml of 0.1 M NaOH, you dissolve 1 gram NaOH in enough water to make a final volume of 250 mls.

Explanation:

Your welcome! :)

Answer:

The answer is gamma rays.

Explanation:

Gamma rays have the highest energies, the shortest wavelengths, and the highest frequencies on the electromagnetic spectrum.

According to Henderson-Hasselbalch equation you need to prepare a buffer solution with a pH of 4.00, using NaF and HF. 0.42 ratio of [base]/[acid] should be used in making the buffer. The correct answer is B.

We can use the Henderson-Hasselbalch equation to calculate the ratio of [base]/[acid] required to create a buffer with a pH of 4.00.

pH = pKa + log([base]/[acid])

Substituting pH = 4.00 and pKa = -log(7.2 × 10^-4) = 3.12, we get:

4.00 = 3.12 + log([base]/[acid])

0.88 = log([base]/[acid])

10^0.88 = [base]/[acid]

0.42 = [base]/[acid]

Therefore, the ratio of [base]/[acid] required to create a buffer with a pH of 4.00 using NaF and HF is 0.42. The correct option is B, [base]/[acid] = 0.42.

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The Yucca Mountain repository is proposed as a repository for spent nuclear fuel and high-level radioactive waste and is capable of disposing of both types of radioactive waste.

Nevada Governor Steve Sisolak and the Nevada Nuclear Projects Authority amend a failed federal plan to build a state high-level radioactive waste repository on Yucca Mountain, 65 miles northwest of Clark County.

The official state position is that Yucca Mountain is a very bad place to store the country's high-level nuclear waste and spent nuclear fuel for several reasons. The Nevada Nuclear Test Site contains some of the most radioactive land masses in the world. announced that it has filed new legal documents for End population density.

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Answer: (A) a cobalt atom contains 27 protons, and most cobalt atoms contain 32 neutrons.

Explanation: just answered the question and that was the correct answer

Answer:     The answer is :     A cobalt atom contains 27 protons and MOST  neutral cobalt atoms contain 32 electrons

Explanation:   I took the test

To find the concentration of the solution, we need to calculate the amount of salt in moles per liter of solution (mol/L).

First, we need to convert the mass of salt to moles using its molar mass. The molar mass of salt (NaCl) is 58.44 g/mol.

Number of moles of salt = 22.0 g / 58.44 g/mol = 0.376 mol

Next, we need to calculate the volume of the solution in liters. We are given that 200 mL of water is used, which is 0.2 L.

Volume of solution = 0.2 L

Finally, we can calculate the concentration of the solution using the formula:

Concentration (in mol/L) = amount of solute (in mol) / volume of solution (in L)

Concentration = 0.376 mol / 0.2 L = 1.88 mol/L

Therefore, the concentration of the solution made by mixing 22.0 g of salt with 200 mL of water is 1.88 mol/L.

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Answer:

results in the formation of calcium stearate

Explanation:

The reaction of sodium stearate soap with calcium chloride results in the formation of calcium stearate, which is an insoluble substance and sodium chloride. The addition of calcium chloride disturbs the soap's cleaning property and raises the hardness of water.

Soap and calcium chloride interact in a way that causes a precipitate to form.

This happens as a result of a reaction between the negatively charged carboxylate groups in soap and the calcium ions in calcium chloride. Calcium soap, a salt type that is insoluble in water, is created as a result of this reaction. This calcium soap precipitation can choke pipes and lessen the cleaning power of the soap. Water softening chemicals, which take out the calcium ions and stop their reaction with the soap, can be added to the water before the soap is used to lessen this reaction. Since it can affect the functionality and efficacy of soap products, understanding the relationship between and soap is crucial for both personal hygiene and industrial uses.

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Answer:

Explanation:

Here, we want to calculate the initial volume of the container

Mathematically, we know that volume and pressure are inversely related. What this means is that as volume increases, pressure is expected to decrease and as pressure increases, volume is expected to decrease

A mathematical link between these two is as follows:

The above is according to Boyles' law.

The values with subscript 1 are the initial values, while the values with the subscript 2 are the final values

Thus:

V1 = ?

P1 = 1.25 atm

V2 = 1L

P2 = 3.75 atm

From the relation:

The new volume if the balloon is cooled at constant pressure is  3.98 L.

Charles's law, states that the volume occupied by a fixed amount of gas is directly proportional to its absolute temperature if the pressure remains constant.

The new  volume is calculated using the Charles law formula

                                 V₁ / T₁  = V₂ / T₂

where,

V₁ = The initial volume of air = 4.24 l

T₁ = 23.00 °C into kelvin = 23  +273 =296 K

T₂ = 5.00 °C into kelvin = 5.00 + 273 = 278 K

V₂ = ?

By making  V₂ subject the subject of the formula  by multiplying both sides by T₂

V₂ = ( V₁  × T₂ ) / T₁

V₂ =  (4.24 L  ×  278 K)  / 296 k  

   = 3.98 L

Therefore, the new volume, if the balloon is cooled at constant pressure, is  3.98 L.

An air-filled balloon will contract when chilled and expand when heated. This occurs because the gas that makes up the air within the balloon expands when it is warm and contracts when it is cool.

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Answer: at 5 its ... 3.98

Explanation:

Answer:

carbon because organic compounds are made up of hydrogen and carbon

Answer:

C: Ability to react. Sorry if its wrong!

Explanation:

Answer:

One micrometer is equal to one-millionth (1/1,000,000) of a meter, which is defined as the distance light travels in a vacuum in a 1/299,792,458 second time interval. The micrometer, or micrometre, is a multiple of the meter, which is the SI base unit for length. In the metric system, "micro" is the prefix for 10-6.

Explanation:

Answer:

i think kinetic energy sorry if I'm wrong.

The mass percent composition of the Lithium in the molecular formula can be given as 18%.

Mass percent composition is defined as the ratio of the mass of an element in a mole to the molar mass of a compound and multiplied by 100. This allows knowing the mass of an element in a compound or a molecule to the rest of the compound.

First, the molar mass of the whole compound is calculated by adding the individual masses and then used in an equation to get divided by the individual mass of the involved element.

The mass percent composition is given as,

% by mass = mass of element / molar mass of compound × 100%

Therefore, the mass percent composition involves the mass of the individual elements and molar mass.

First of all we determine the molar mass of Lithium phosphate,

Molar mass is 115.79 g/ mol

1 mol of lithium phosphate has:

3 moles of Li → 20.82g

The mass percent composition of lithium will be:

(Mass of Li / Total mass) . 100

= (20.82 g / 115.79 g) . 100

= 18 %

Therefore, mass percent composition is 18 %.

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1.8 moles of nitrogen react with 3 moles of hydrogen to form 2 moles of ammonia.

The chemical equation for the reaction is:

N2 + 3H2 → 2NH3

Therefore, 2 moles of ammonia are formed.

Ammonia is an odourless gas that has a potent scent.. It is the main component of many industrial and household cleaning products, and is also used widely in agriculture as a fertilizer. Ammonia can be hazardous to human health if inhaled, ingested, or if it comes in contact with the skin or eyes. Inhalation of high concentrations of ammonia can cause irritation of the eyes, nose, throat, and lungs. Ingestion of ammonia can cause severe damage to the digestive system.

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The name of the element is Gallium and the symbol is Ga.

Solution:

Abundance of second isotope = (100 - 60.11) = 39.89 %

Atomic mass of element = 68.9255 * (60.11 / 100) + 70.9247 * (39.89 / 100) = 69.72 AMU

The atomic mass of an element is 69.72 AMU which is matched with the atomic mass of gallium.

so,

The name of the element is Gallium and the symbol is Ga.

The atomic mass of an element is the weighted average of the atomic masses of the naturally occurring isotopes of that element. Atomic mass calculations use the abundance ratios of each isotope. Isotopes are members of a family of elements that all have the same number of protons and different numbers of neutrons.

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Answer:

no

Explanation:

bcuz science

Answer:

The more mentos you put in a bottle of pop does not necessarily mean a larger explosion. The max amount of mentos with the largest explosion was 4 mentos, it went 350 cm high. With 5 or 6 mentos the explosion went only 330 and 310 cm high.

Hope this helped in some way?

you would need to measure approximately 12.2 mL of sodium formate and combine it with 15.8 mL of formic acid to make the desired formate buffer.

To prepare a 28.0 mL formate buffer with a [sodium formate]/[formic acid] ratio of 2.3 using 0.10 M formic acid and 0.10 M sodium formate, you will need to measure 12.2 mL of sodium formate. The remaining volume (15.8 mL) will be filled with formic acid.

To calculate the volume of sodium formate needed, we can use the formula:

The volume of sodium formate = (Ratio of sodium formate to formic acid / Total ratio) × Total volume of buffer

Plugging in the given values, we have:

Volume of sodium formate = (2.3 / (2.3 + 1)) × 28.0 mL

= (2.3 / 3.3) × 28.0 mL

= 0.697 × 28.0 mL

≈ 12.2 mL

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Answer:

Explanation: Take, for example, an ice cube in an open or closed container, that is in the process of melting at room temperature. There is solid water, liquid water, and water vapour (gas) in the air.

Boyle's Law-

\(\:\:\:\:\:\:\:\:\:\:\:\star\:\sf \underline{ P_1 \: V_1=P_2 \: V_2}\\\)

(Pressure is inversely proportional to the volume)

Where-

As per question, we are given that -

Now that we have all the required values and we are asked to find out the final volume, so we can put the values and solve for the final volume -

\(\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\star\:\sf \underline{ P_1 \: V_1=P_2 \: V_2}\)

\(\:\:\:\: \:\:\:\:\:\:\longrightarrow \sf 6 \times 4= 2\times V_2\\\)

\( \:\:\:\:\:\:\:\:\:\:\longrightarrow \sf V_2 = \dfrac{6 \times 4 }{2}\\\)

\( \:\:\:\:\:\:\:\:\:\:\longrightarrow \sf V_2 = \cancel{\dfrac{ 24}{2}}\\\)

\( \:\:\:\:\:\:\:\:\:\:\longrightarrow \sf \underline{V_2 = 12 \:L }\\\)

Therefore, the new volume of the gas will become 12 L at 2atm.

Answer:

Molality of glucose is 7×10⁻¹⁰ mol/Kg

Explanation:

\(Molality = \frac{Moles of solute}{Kg of Solvent}\)

you need to do 2 things before use this formula:

1. Transform 6.36 g of glucose into moles

2. Transform 500 mL of water into grams

1. To transform 6.36 g of glucose into moles, we need to know the molar mass of glucose. The molecular formula of glucose is C₆H₁₂O₆

Molar Mass of:

O = 16

H = 1

C = 12

So, to calculate the molar mass of glucose:

(6x12)+(12x1)+(16x6) = 72 + 12 + 96 = 180 g/mol

Now:

6.36 g of glucose --- x moles

180 g of glucose --- 1 mol

x = 6.36/180

x = 0.035 moles

2. First, transform 500 mL into L = 0.5 liters.

To transform 500 mL of water into grams we need to know the density of the water. It is 997 Kg/m³.

liters to m³:

1 liter --- 0.001 m³

0.5 --- x

x = 5×10⁻⁴ m³

997 Kg --- 1 m³

5×10⁻⁴ --- x

x = 5×10⁻⁷ Kg

Now: 0.035 moles/5×10⁻⁷ Kg =

Molality of glucose is 7×10⁻¹⁰ mol/Kg

Answer:

Mountains, hills, plateaus

Explanation:

Answer:

2 and 3

Explanation:

A chemical reaction is defined as the process in which two or more reactants combined together chemically and gives a different product.

A balanced chemical equation involves an equal number of atoms on the reactant and product side. A balanced chemical reaction occurs when the atoms present on the reactant side or left side of the arrow is equal to the atoms on the product side or right side of the arrow.

The process of the balanced chemical equation is based on errors and trials in which the atoms in each element is identified, the atoms are then multiplied with required numbers, the addition of coefficient in front of molecules and check the equation at last.

Hence, the correct options are "2 and 3".

The rate at which the volume is changing, represented as dV/dt, is given by the equation (0.4155 - 0.32V(t)) / 16, where V(t) is the volume, and the values are substituted accordingly.

To find the rate at which the volume is changing, we need to differentiate the given equation with respect to time (t) using the chain rule:

PV = 8.31T

Differentiating both sides with respect to time:

P(dV/dt) + V(dP/dt) = 8.31(dT/dt)

We are given:

dT/dt = 0.05 K/s (rate of temperature change)

(dP/dt) = 0.02 kPa/s (rate of pressure change)

P = 16 kPa (initial pressure)

T = 295 K (initial temperature)

Substituting the given values into the equation, we have:

16(dV/dt) + 16V(0.02) = 8.31(0.05)

Simplifying the equation:

16(dV/dt) + 0.32V = 0.4155

Rearranging the equation to solve for dV/dt:

16(dV/dt) = 0.4155 - 0.32V

(dV/dt) = (0.4155 - 0.32V) / 16

To find the rate at which the volume is changing when T = 295 K, we substitute V = V(t) and T = 295 into the equation:

(dV/dt) = (0.4155 - 0.32V(t)) / 16

Calculating the value of (dV/dt) at the given temperature and rounding to at least 4 decimal places will provide the final answer.

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Answer:

\(\boxed {\tt 250 \ mL}\)

Explanation:

First, let's remember that 1 cubic centimeter is equal to 1 milliliter.

We have a beaker that is 250 cubic centimeters. Since 1 cubic centimeter is equal to 1 milliliter,

The volume in a 250 cm³ beaker is 250 milliliters.

Answer:

a cubic centimeter is the same as a millimeter, so it would just be 250ml

After considering the given the data we conclude that the  ionization energy generally increases from left to right across a period. Therefore, the element with the highest ionization energy in period 3 would be located on the right side of the periodic table.

We can also see from the search results that helium has the highest ionization energy of all the elements, while sodium has the lowest ionization energy in period 3. Therefore, we can conclude that the element with the highest ionization energy in period 3 is located to the right of sodium.
Based on the periodic table, we can see that the elements in period 3 are:
Sodium (Na)
Magnesium (Mg)
Aluminum (Al)
Silicon (Si)
Phosphorus (P)
Sulfur (S)
Chlorine (Cl)
Argon (Ar)
Therefore, the element with the highest ionization energy in period 3 is most likely Argon (Ar), which is located on the far right side of the period.
In summary, the element with the highest ionization energy in period 3 is most likely Argon (Ar).
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