The compound 1,1-difluoroethane decomposes at elevated temperatures to give fluoroethylene and hydrogen fluoride according to the equation: CH3CHF2(g) CH2CHF(g) + HF(g) 1. At 460 K, the rate constant for this reaction is k = 5.8 ×× 10–6 s–1 and the activation energy is Ea = 265 kJ/mol. What is the frequency factor for this reaction? 2. At what temperature would the reaction proceed with a rate four times faster than at 460 K?

Each of your kidneys is made up of about a million filtering units called nephrons. Each nephron includes a filter, called the glomerulus, and a tubule. The nephrons work through a two-step process: the glomerulus filters your blood, and the tubule returns needed substances to your blood and removes wastes.

Each of your kidneys is made up of about a million filtering units called nephrons.

Each nephron includes a filter,

called the glomerulus, and a tubule. The nephrons work through a two-step process:

the glomerulus filters your blood,

and the tubule returns needed substances to your blood and removes wastes

Explanation:

The Answer is a reaction between two acids

Answer:Chloroplast

Explanation:

Answer:

D

Explanation:

Chloroplast

One way to rephrase it is to say: "All life depends on photosynthesis because plants use the sun's energy to make oxygen for animals to breathe. Also, animals rely on plants for energy when they eat the plants"

Given :

Actual value observed , \(v_a=1.92\ g/ml\).

Expected value , \(v_e=1.89\ g/ml\).

To Find :

The student's percent error.

Solution :

Percentage error is given by :

\(P=|\dfrac{v_a-v_e}{v_e}|\times 100\ \%\)

Putting given values in above equation, we get :

\(P=|\dfrac{1.92-1.89}{1.89}|\times 100\ \%\\\\P=1.587\ \%\)

Therefore, percentage error is 1.587 %.

Hence, this is the required solution.

Answer:

I think It is correct

I may be wrong but that is just what I think...sorry if I am wrong

Answer:

63.6+3.5=52.1

Explanation:

OK UNDERSTOOD

Answer:

\( \huge{ \boxed{1.213 \: \text{moles}}}\)

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

\( \bold{n = \frac{N}{L}} \\ \)

where

From the question

N = 7.30 × 10²³ NaCl molecules

\(n = \frac{7.30 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{7.30}{6.02} \\ = 1.2126\)

We have the final answer as

The standard entropy change for the formation reaction of CO(g) at 298 K.

To find the standard entropy change (∆S°) for the formation reaction of CO(g) at 298 K, you need to use the standard entropy values for the reactants and products. The equation to calculate ∆S° is as follows:

∆S° = ΣS°(products) - ΣS°(reactants)

First, you need to find the standard entropy values for CO(g) as a product and any other relevant species as reactants.

The standard entropy values (S°) for CO(g) and other relevant species can be found in reference sources such as tables or databases. At 298 K, the standard entropy value for CO(g) is approximately 197.7 J/(mol·K).

Once you have the standard entropy values for the reactants and products, substitute them into the ∆S° equation and perform the calculation to find the standard entropy change for the formation reaction of CO(g) at 298 K.

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Answer:

A

Explanation:

The description of the weather in Florida is daily thunderstorms are very common in Florida.

Thunderstorms are lightning storms or electrical storms.

Thunderstorms are caused by unstable warm and cold air.

Lightning, hail and heavy rains happen in thunderstorms.

It causes high damage to houses and properties.

Thus, the correct option is A.

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Answer:

volume is how much an object can hold, pressure is the force the pushes things into the center, and temperature, if extreme heat can cause pressure. and volume of an object can hold certain amounts of pressure from temperature.

Explanation:

Explanation:

Metallic bond, force that holds atoms together in a metallic substance

Answer:

without fission reactions you wouldn't react, and we need to react

Explanation:

Answer:

Answer: Atoms of chlorine (CI) and magnesium (Mg)

Answer: Atoms of chlorine (CI) and magnesium (Mg)is your answer

The volume of the 70.72 milliliters of isopropanol are in a 93.8 ml sample of the rubbing alcohol solution. This is calculated by using the volume percent concentration.

We have to use the volume by volume percent concentration, v/v%, to to calculate the milliliters of isopropanol which is the solute that are present in the sample.

We know that the volume by volume percent concentrations is that they are meant to represent the number of milliliters of solute present for every 100 mL of solution given.

75.4 % v/v isopropanol is equals to 75.4 mL isopropanol in 100 mL in the solution. That means we can use the volume of the solution by volume percent concentration in order to calculate the number of milliliters of isopropanol present in 75.4mL of  the solution.

Volume of the solute / 93.8 of the solution = 75.4mL solute / 100ml solution

Calculating this we get volume of the solute = 70.72 ml

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The pressure at the peak of Mount Everest in units of atmospheres is 0.331 atm.

Mount Everest is Earth's highest mountain above sea level, located in the Mahalangur Himal sub-range of the Himalayas.

We can use the following conversion factor to convert kPa to atm:

1 kPa = 0.00987 atm

So, to convert 33.6 kPa to atm, we can use the following calculation:

33.6 kPa x 0.00987 atm/kPa = 0.331 atm

Therefore, the pressure at the peak of Mount Everest in units of atmospheres is 0.331 atm.

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Sublimation is the phase transition in which a solid instantly transforms into a gas. When a substance's temperature and pressure are such that the solid phase can transition directly to the gas phase without first going through the liquid phase, this is known as sublimation. In contrast to deposition, which skips the liquid phase and converts a gas directly into a solid, this process does the opposite.

In nature, sublimation occurs often and may be seen in a number of settings. For instance, under ambient temperature and pressure, dry ice (solid carbon dioxide) sublimes to create a gas that is frequently employed in special effects and for food preservation. Similar to this, under some circumstances, snow and ice may sublimate and release water vapor.

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According to above statement, HCl ( Hydrochloric acid ) is a strong acid, which when mixed in water dissociates complete in water to form H+ and Cl- ions that means 100% dissociation. but acids weaker than HCl shows relatively less dissociation.

That is less than 100% dissociation when mixed in water ~

This information tells us about the relative dissociation of weaker acids is that weaker acids dissociates less than 100%.

Dissociation is defined as the breaking up of a compound into simpler constituents or components or parts. Ionic compounds dissociates in the water solution. Stronger acids have 100% ability to dissociate.

So we can conclude that this information tells us about the relative dissociation of weaker acids is that weaker acids dissociates less than 100%.

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Answer:

15.17 g

Explanation:

To answer this, we need to find the molar mass of nickel in nickel (II) fluoride. The formula for nickel (II) fluoride is NiF2. This gives us the molar mass of 96.69 g. The mass percentage of nickel is 60.70% approximately (as we divide the molar mass of nickel by that of nickel (II) fluoride), and 60% of 25g gives us 15.17 g

In the laboratory, hydrogen gas is used as fuel for various purposes, including heating. In order to start the heating process, it is necessary to allow the hydrogen gas to flow continuously for a while. This is because there may be air or other gases present in the hydrogen gas pipeline that can affect the heating process.

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Answer:

the correct answer is CO2 (the last one)

545mm Hg in Kilopascals is 72.6607

I hope this helps you. Good luck stay safe, healthy and, happy!<3

Answer:-Science have researched more facts and cool things about it-It would have more facts and things to learn-The quality would be better and more understandingI just tried 3 quick ideas I hope it can help a bit

Explanation:

Answer:

the answer is you should know this already :)))))))))))))))))))))))))))))))))))))))))))))))))))

A substance which increases the rate of a reaction without itself undergoing any permanent change chemically or quantitatively is defined as the catalyst. The value of enthalpy change is unaffected by the addition of the catalyst.

The enthalpy or heat content of a system is defined as the sum of the internal and the pressure volume energy of the system. It is denoted by the letter H.

The enthalpy of a reaction is a state function and it is the difference in enthalpies between the products and the reactants. A catalyst is generally used to lower the activation energy and does not affect the enthalpies of the products and the reactants.

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Answer:

The balance equation of Ca(OH)2 + HCl ---> CaCl2 + H2O​

is

Ca(OH)2(s) + 2HCl(aq) ---> CaCl2(aq) +2H2O​ (l) (balanced equation)

Answer:

There are many ways to figuring this out: you could use a ruler, a calculator or scrap paper.

Explanation:

This is not an actual flat out answer, but it’s helpful methods to getting the answer the next time you are stuck. Hope you are having a nice day. Bless your heart and soul.