A certain substance has a heat of vaporization of 64.08 kJ/mol. At what Kelvin temperature will the vapor pressure be 6.50 times higher than it was at 355 K?

Answer:

fafsafwafsxDlmfao

Explanation:

Organic transformation sequential equation using catalysts will be as follows:

2CH3-CH2-O => (alc. KOH) => CH2=CH2 + KCl + H2O => (Br2/CCl4) => CH2Br-CH2Br + Zn

CH2Br-CH2Br + Zn => (HBr /Pd) => CH2=CH2+ZnBr2

As can be visualized from above organic transformation equation, conversion of dry ether in presence of alkaline potassium hydroxide results in formation of unstable ethene. This dry unsaturated compound of ethene is stabilized by reaction that happens in presence of bromine or calcium tetrachloride as the catalyst which results in formation of ethylene bromide which in presence of highly efficient palladium as catalyst results in formation of stable ethene as byproduct. Thereby with formation of stable compound of ethylene, it releases zinc bromide as byproduct resulting completion of reaction equation. This stable product ethene is a double bonded carbon structure that is chemically extremely flammable and has planar structure.

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Answer: Answer is in Explanation

Explanation:

The strong nuclear force pulls together protons and neutrons in the nucleus. At very small distances only, such as those inside the nucleus, this strong force overcomes the electromagnetic force, and prevents the electrical repulsion of protons from blowing the nucleus apart.

Answer:

The answer is

Explanation:

To find the number of entities or particles given the number of moles of a substance we use the formula

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question

n = 3.4 mol

We have

N = 3.4 × 6.02 × 10²³

We have the final answer as

Hope this helps you

Answer:

I'm pretty sure that's Strontium

Strontium ion is responsible for the red firework.

Strontium is the chemical element with the image Sr and atomic variety 38. An alkaline earth steel, strontium is a gentle silver-white yellowish steel detail this is fantastically chemically reactive.

A metal ion is a type of atomic compound that has an electrical charge. Such atoms willingly lose electrons to form positive ions called cations. Ions are essentially capped by delocalized electrons, which are responsible for processes such as conductivity.

Fireworks are a class of low-explosion fireworks equipment used for aesthetic and recreational purposes. They are most commonly used at fireworks festivals (also known as fireworks shows or fireworks) and combine numerous devices in outdoor settings. Such exhibitions are the focus of many cultural and religious celebrations.

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Answer:

Slide a magnet through the mixture. When you take the magnet off, the iron filings are going to be attracted to the magnet and the sand will stay in the bowl

Explanation:

Answer:

Density can be used to separate the substances that make up a mixture, because each substance in a mixture has its own density.  For example, if a mixture of sand and oil is placed in water, the sand will sink to the bottom of the container. The sand is more dense than the water.

Explanation:

Please mark me as brainy if this helps

Answer: 29%

Explanation:

Answer:

b 29 percent

Explanation:

If a reaction has a negative ΔG and a positive ΔS, the reaction will be spontaneous at all temperatures.

If a reaction is spontaneous at all temperatures, it implies that the reaction will occur without the need for any external intervention, such as the addition of energy. For a reaction to be spontaneous, it must satisfy the criteria of thermodynamic favorability, which is determined by the change in Gibbs free energy (ΔG) associated with the reaction.

The relationship between ΔG, temperature (T), and the equilibrium constant (K) of a reaction is described by the equation ΔG = ΔH - TΔS, where ΔH is the change in enthalpy and ΔS is the change in entropy.

To ensure spontaneity at all temperatures, two conditions must be met:

ΔG must be negative: A negative ΔG indicates a thermodynamically favorable reaction, meaning the products have a lower Gibbs free energy than the reactants. If ΔG is negative, the reaction will proceed spontaneously in the forward direction.

ΔS must be positive: A positive ΔS signifies an increase in the overall entropy of the system. Higher entropy means more disorder, and spontaneous reactions often involve an increase in randomness. When ΔS is positive, it can compensate for the enthalpic term, ΔH, allowing the reaction to proceed spontaneously.

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A redox reaction is a reaction in oxidation or the loss of electrons occurs simultaneously with reduction involving a gain of electrons.

The balanced equation of the redox reaction by the oxidation number method is as follows: Zn + 2HNO₃ ----> Zn(NO₃)₂ + 2NO₂ + H₂O

The complete equation of the redox reaction is given below as follows:

To balance the chemical reaction by oxidation number, we need to ensure that the total change in oxidation numbers for each element is zero on both sides of the equation.

Let's assign the oxidation numbers to the elements:

In Zn(NO₃)₂, the oxidation number of Zn is +2, and the oxidation number of each NO₃ group is -1.

In HNO₃, the oxidation number of H is +1, the oxidation number of N is +5, and the oxidation number of each O in NO₃ is -2.

On the product side, the oxidation number of Zn is +2, and the oxidation number of each NO₃ group is -1. The oxidation number of N in NO₂ is +4, and the oxidation number of each O is -2. The oxidation number of H in H₂O is +1, and the oxidation number of O is -2.

Now, let's balance the reaction by considering the changes in oxidation numbers:

Zn: 0 → +2

H: +1 → 0

N: +5 → +4

O: -2 → -2

To balance the oxidation numbers, we need two NO₂ molecules on the product side. The balanced equation is:

Zn + 2HNO₃ ----> Zn(NO₃)₂ + 2NO₂ + H₂O

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The total number of moles of electrons lost by Mg(s) when 2.0 moles of electrons are gained by Ni2+(ag) is also 2.0 moles of electrons.

This is because in a chemical equation, the number of moles of electrons gained by the reducing agent (in this case Ni2+) is equal to the number of moles of electrons lost by the oxidizing agent (in this case Mg(s)).

In this redox reaction, Mg is being oxidized because it loses electrons and Ni is being reduced because it gains electrons. The oxidation and reduction process are occurring simultaneously, so the number of electrons lost by Mg(s) is equal to the number of electrons gained by Ni2+(ag).

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The electrons that are gained by the \(Ni^{2+}\) ion is 2.0 moles of electrons.

We know that when there is a redox reaction, there would be the loss or gain of electrons in the process. The process is a simultaneous one so the electrons that are lost by one specie must as a matter of necessity be gained by another specie.

In this case, as we look at the reaction equation we can see that there are two electrons that have been lost by the magnesium atom and these two electrons would be gained by the Nickel II ion.

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Answer:The suggested answers are for K=298 degrees and the nearest correct answer seems to be increase the room temperature by 22 degrees Fahrenheit. But by calculation, for 300 K, then convert 300k to degrees Celsius = 300-273.15=26.85 degrees celsius. Then convert the 26.85 to degrees F, so F=9/5C + 32= 48.33+32=80.33-55F (present room temperature)=25.33 degrees F to increase the room temperature by.

Explanation:

According to conversion between  Celsius and kelvin temperatures , 363.6 K is 90.6°C.

Three scales are used to measure temperature the Kelvin scale, Celsius scale and Fahrenheit scale.The basic unit of temperature which  is used in SI system is kelvin temperature however it is impractical in most practical uses.

The Celsius scale is commonly used in clinical terms where it is related to kelvin scale as the two units are equal in magnitude. The difference between Celsius and kelvin scale is the zero point which on kelvin scale represents theoretical temperature at which substance has no further heat loss.

While the zero point on Celsius scale represents freezing point of water. The two scales are related as follows

K=°C+273

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To solve this question, we have to convert the grams of glucose to moles using its molecular weigth and convert the grams of water to kilograms of water using a conversion factor:

Now, divide the number of moles of glucose by the number of kg of water to find the molality of the solution:

Answer:

The shift often happens when heat is applied or removed at a specific temperature

Explanation:

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Answer:

Hope this helps ;) don't forget to rate this answer !

Explanation:

The molar mass of a sample can be calculated using the formula:

Molar mass = (molecular weight) / (number of moles)

To find the molar mass, we first need to find the molecular weight of the sample. The molecular weight is the weight of a single molecule of the substance in atomic mass units (amu).

To find the molecular weight, we need to convert the weight of the molecule from grams to amu. One amu is equal to 1.66 x 10^-24 grams.

So, to convert the weight of the molecule from grams to amu, we can divide the weight of the molecule (5.34 x 10^-23 grams) by the conversion factor (1.66 x 10^-24 grams/amu):

Molecular weight (amu) = (5.34 x 10^-23 grams) / (1.66 x 10^-24 grams/amu)

= 3.22 x 10^-22 amu

Now that we have the molecular weight, we can use it to calculate the molar mass. However, we need to know the number of moles in order to do this. Without this information, it is not possible to calculate the molar mass.

Answer:

i agree

Explanation:

Answer:

Approximately \(60.3\; \rm g\).

Explanation:

Look up the relative atomic mass of \(\rm Al\) and \(\rm Br\) on a modern periodic table:

Calculate the formula mass of \(\rm AlBr_3\) and \(\rm Br_2\):

\(\begin{aligned}& M(\mathrm{AlBr_3}) = 26.982 + 3 \times 79.904 \approx 266.694\; \rm g \cdot mol^{-1} \\ & M(\mathrm{Br_2}) = 2\times 79.904 \approx 159.808\; \rm g \cdot mol^{-1}\end{aligned}\).

Calculate the number of moles of formula units in \(67.1\; \rm g\) of \(\rm AlBr_3\):

\(\begin{aligned}n(\mathrm{AlBr_3}) &= \frac{m(\mathrm{AlBr_3})}{M(\mathrm{AlBr_3})} \\ &\approx \frac{67.1\; \rm g}{266.694\; \rm g \cdot mol^{-1}} \approx 0.2516\; \rm mol \end{aligned}\).

Refer to the balanced equation for this reaction. The ratio between the coefficients of \(\rm Br_2\) and \(\rm AlBr_3\) in that equation is three-to-two. That corresponds to the ratio:

\(\begin{aligned}\frac{n(\text{$\mathrm{Br_2}$, consumed})}{n(\text{$\mathrm{AlBr_3}$, produced})} &= \frac{3}{2}\end{aligned}\).

It is already calculated that approximately \(0.2516\; \rm mol\) of \(\rm AlBr_3\) was produced through this reaction. Apply this ratio to approximate the (minimum) number of moles of \(\rm Br_2\) that is consumed:

\(\displaystyle \frac{3}{2} \times 0.2516\; \rm mol \approx 0.3774\; \rm mol\).

Calculate the mass of that \(0.3774\; \rm mol\) of \(\rm Br_2\):

\(\begin{aligned}m(\mathrm{Br_2}) &= n(\mathrm{Br_2})\cdot M(\mathrm{Br_2}) \\ &\approx 0.3774\; \rm mol \times 159.808\; \rm g \cdot mol^{-1} \approx 60.3\; \rm g\end{aligned}\).

Answer:

Give person above me brainliest

Explanation:

Option A.The reaction of a carboxylic acid with SOCl2 produces acid chloride as a product.

Acid chlorides have the molecular formula RCOCl, where R is the side chain. They are carboxylic acid reactive derivatives. Acyl chloride is an organic compound consisting of a chlorine atom attached to an acyl group in organic chemistry.

Acyl chlorides are used to make anhydride amides and esters by reacting acid chlorides with salts of carboxylic acids, amines, or alcohols. There are some related compounds in which the -OH group of the acid is replaced by another. Such compounds are called acid derivatives.

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Answer:

I think it's B

Explanation:

I dont have much experience with the periodic table, but I just think its B.

Answer:

it's either B or C

Explanation:

I don't have that much experience for this but im giving you my honest answer i hope this will help ;3

The first step to name the given alkane is to identify its longest carbon chain, which will be the main chain of the organic molecule:

This chain contains 7 carbons, which means that the compound is a heptane.

Now, we have to identify the branches of the chain:

This chain has 2 carbons, which is named as ethyl, and it is located at the third carbon of the chain, therefore, the full name of this compound is:

3-ethyl-heptane

Answer:

all I can say is town near the ocean atmospheric changes will be cooler, warm, sea breeze, and fresh healthy air. Then when it comes to the mountain lot of change firstly there's a dry air

Approximately 194.0 grams of glucose (C6H12O6) would be required to prepare a 5000 mL solution with a concentration of 0.215 M.

To determine the mass of glucose (C6H12O6) required to prepare a 0.215 M solution in 5000 mL, we need to use the formula:

Molarity (M) = moles of solute / volume of solution (in liters)

First, let's convert the volume of the solution from milliliters (mL) to liters (L):

5000 mL = 5000/1000 = 5 L

Now, we can rearrange the formula to solve for moles of solute:

moles of solute = Molarity (M) x volume of solution (L)

moles of solute = 0.215 M x 5 Lmoles of solute = 1.075 mol

Since glucose (C6H12O6) has a molar mass of approximately 180.16 g/mol, we can calculate the mass of glucose using the equation:

mass of solute = moles of solute x molar mass of solute

mass of glucose = 1.075 mol x 180.16 g/mol

mass of glucose = 194.0 g (rounded to three significant figures)

Therefore, approximately 194.0 grams of glucose (C6H12O6) would be required to prepare a 5000 mL solution with a concentration of 0.215 M. It's important to note that the molar mass of glucose used in this calculation may vary slightly depending on the level of precision required.

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Answer:

The number of these organisms in the soil would decrease.

Explanation:

The volume of the lead II nitrate that is required is 328 mL.

We know that we can be able to obtain the volume from the use of the stoichiometry  of the reaction as we can see. We have to balance the reaction equation and then work from there.

Number of moles of the lead II bromide =  150 grams /367 g/mol = 0.41 moles

Given that;

1 mole of lead II nitrate produced 1 mole of  lead II bromide

x moles of lead II nitrate produced 0.41 moles of  lead II bromide

x = 1 mole * 0.41 moles / 1 mole

x =  0.41 moles

We now have;

number of moles = concentration * volume

volume = number of moles/concentration

volume = 0.41 moles/ 1.25 mol/L

volume = 0.328 L or 328 mL

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The Structure of polypropylene(C3H6)n is linear.

The process in which atom or small molecules joined together repeatedly to form a polymer with complex structure is called as polymerization.

The repeated unit of atom or small molecule is called monomer

Polypropylene is synthesized from the polymerization of propylene which is the monomer unit.

It has a linear structure made of propylene hydrocarbon units.

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