According to the collision model, why does increasing the temperature increase the rate of a reaction?.

A solid sample has a MP of 133 - 137°C. one can conclude about the sample is It is relatively impure.

the temperature at which a compound completely melts is called as melting point but generally we don't observe a melting point rather a range is observed  if range more than 20 C is observed generally it's said that it's impure an impure solid melts over a wide range and at a temperature lower than that of the pure solid. so since the last value 139 0 C must be the reported value when you must have seen it completely melting so it's melting point should be this only .

learn more about solid temperatures here:

https://brainly.com/question/2160033

#SPJ4

For the bond formation rule to be met, the octet rule, which calls for 8 electrons in the outermost shell, must be present.

What is octet rule?

According to the "octet rule," an atom is the most stable when it has a complete valence (outer) shell (typically 8 electrons, but hydrogen and helium only have two). As a result, the atoms involved in covalent (nonmetal to nonmetal) bonding often have eight valence electrons following the bond.

To know more about octet rule, check out https://brainly.com/question/865531

#SPJ4

The mole fraction of the krypton is 0.27.

We know that in this case there is a mixture of gases and the gases that are mixed here are krypton gas and xenon gas. There are different number of moles of each of the gases that can be found in the mixture.

Now we have the idea that;

Total pressure of the gases =  6.69 atm

Partial pressure of Kr = ?

Partial pressure of Ar = 2.99 atm

Partial pressure of  Xe =  1.92 atm

Partial pressure of Kr = 6.69 - (2.99 + 1.92)

= 1.78 atm

Partial pressure = Mole fraction * Total pressure

Mole fraction  = Partial pressure/Total pressure

Mole fraction  =  1.78 atm/6.69 atm

= 0.27

Learn more about mole fraction:https://brainly.com/question/8076655

#SPJ1

Three stages are required to transform benzaldehyde into 2-phenyl acetonitrile.

A benzene ring with a formyl substituent makes up the chemical molecule known as benzoaldehyde. It is both the most readily used industrially and the most straightforward aromatic aldehyde. A benzene ring with a formyl substituent makes up the chemical molecule known as benzoaldehyde (C6H5CHO). It is both the most readily used industrially and the most straightforward aromatic aldehyde. It is a clear liquid with a distinct almond-like scent.

In addition to batteries, acetonitrile is used to create perfumes, rubber goods, insecticides, acrylic nail removers, and medications. Fatty acids are also extracted from both vegetable and animal oils using this method. Employees should receive safe handling and storage instructions prior to working with acetonitrile.

learn more about benzoaldehyde here

https://brainly.com/question/13263721

#SPJ4

The products formed from (z)-3-methylhex-3-ene and (e)-3-methylhex-3-ene in hydroboration oxidation are the same; the only difference is that the stereochemistry of the products will be different.

The (z)-3-methylhex-3-ene will produce a product with the hydrogens on opposite sides, while the (e)-3-methylhex-3-ene will produce a product with the hydrogens on the same side. They are diastereomers.

The hydroboration oxidation reaction involves the addition of a borane (BH₃) and an oxidant (usually H₂O₂) to an alkene. The borane adds to the alkene double bond to create a new carbon-boron bond, and the oxidant adds oxygen to the boron, forming a boroxine and releasing a proton.

The product of this reaction is alcohol. Since both (z)-3-methylhex-3-ene and (e)-3-methylhex-3-ene are the same alkene, the reaction mechanism and products are the same; the only difference is the stereochemistry.

The (z)-3-methylhex-3-ene will produce a product with the hydrogens on opposite sides, while the (e)-3-methylhex-3-ene will produce a product with the hydrogens on the same side.

In summary, the products formed from (z)-3-methylhex-3-ene and (e)-3-methylhex-3-ene in hydroboration oxidation are the same, but the stereochemistry of the products is different.

To know more about stereoisomerism, click below:

https://brainly.com/question/24128816

#SPJ4

0.45 moles of carbon dioxide are needed to produce 0.075 mol of glucose.

6CO2 + 6H2O ===> C6H12O6 + 6O2 ... balanced equation

0.075mol glucose x 6 mol CO2/1 mol glucose = 0.45 moles CO2 needed (2 large figures).

At some stage in photosynthesis, vegetation absorb carbon dioxide (CO2) and water(H2O) from the air and soil. In the plant cellular, the water is oxidized, which means it loses electrons, even as the carbon dioxide is decreased, which means it gains electrons.

Photosynthesis converts radiant or suns electricity into chemical energy. The productivity of agricultural crops without delay depends upon the rate of photosynthesis. It presents oxygen in the environment for all living organisms.

Photosynthesis is a natural system by using which trees and flowers use energy from the sun and carbon dioxide from the air to make the food they want to live and develop.

Learn more about Photosynthesis here:-brainly.com/question/19160081

#SPJ4

If a sample degrades between 55. 4 g through 31. 7 g within 2. 50 minutes, its half-life is 3.09 minutes.

Locating its causative factors. The term "nuclear family" relates to the a family's fundamental members, often its children and their parents. Nuclear has meanings that mean "kernel" or perhaps more simply "something fundamental," therefore nuclear has a longstanding experience for figurative application before its primary relationship with "nuclear energy."

Nuclear decay follows first order kinetics, therefore for first order kinetics

t = 2.303/λ log (N₀)/Nt

We also know,

t1/2= 0.693/λ

λ = 0.693/t1/2

Put in above expression,

t = 2.303/0.693/t1/2 log (N₀)/Nt

t = 2.303/0.693 * t1/2 log (N₀)/Nt

t1/2 = 0.693*t/2.303*log(N₀)/Nt

t1/2 = 0.693*2.50/2.303*log((55.4)/31.7))

t1/2 = 1.73/2.303*0.242

t1/2 = 1.73/0.557

t1/2 = 3.10 minutes

To know more about Nuclear visit:

https://brainly.com/question/3992688

#SPJ4

The number of moles that the sample which occupies a volume of 45.1 L at STP contains is 1.2 moles.

At STP,

P = 1atm

T = 273 K

Given,

V = 45.1 L

R = 0.0831 kJ/mol K

By ideal gas law,

PV = nRT

Substituting the values and solve the equation to obtain the value of n,

45.1 × 1 = n × 0.0831 × 273

⇒ n = 45.1/22.6863

⇒ n = 1.2 moles

Hence, the number of moles of the gas is 1.2 moles.

Learn more about number of moles of gases at STP from the link given below.

https://brainly.com/question/20357363

#SPJ4

This molecule has been bent. The shape of angular molecules, also known as bent or V-shaped molecules, is non-linear.

Take water (H2O), for instance, which has an angle of roughly 105°.

Two double bond units and one lone pair make up the structure, which will take the form of a trigonal planar arrangement. SO2 is referred to be bent or V-shaped because the lone pair is ignored when describing the shape.

Therefore, if two electron pairs are paired but are not utilised in chemical bonding, they are referred to as lone pairs. As a result, the amount of valence electrons surrounding an atom is equal to the sum of the electrons in lone pairs and those in bonds.

To know more about molecular geometry, visit:

https://brainly.com/question/7558603

#SPJ4

If 60 g of a radioactive source voluntarily declines to 15 g within 16 hours, the radioisotope's half-life is 8 hours.

The quantity of protons with in atomic nuclei of component atoms of the same chemical is the same, but the neutron count varies. The radioactive materials of an element are called radioisotopes. They can alternatively be described as atoms with excess electricity in their nucleus or unstable neutron-proton combinations. Actual radiation levels are reported using the Contributes to the ongoing (Bq), the global unit, or the Cobalt (Ci), official machine in the U. S.. Alternative photodiode varieties may be used instead of gamma counters, which are widely used to measure environmental parameters.

Half life = total life/2

Half life = 16/2

Half life = 8 hours

To know more about Radioisotope visit:

brainly.com/question/13076859

#SPJ4

Answer:

[tex] \huge{\boxed{212 \: \text{m/s}}} [/tex]

Explanation:

The speed of the wave given it's frequency and wavelength can be found by using the formula;

[tex] \bold{v = f \times \lambda}[/tex]

where f is the frequency in Hz and [tex] \lambda [/tex] is the wavelength in m

From the question

f = 53 Hz

[tex] \lambda [/tex] = 4 m

[tex] \large{v = 53 \times 4 = 212}[/tex]

We have the final answer as

The half-life of the radioisotope is 8 hours.

What do you mean by half-life?

Half-life, in radioactivity, is the interval of time required for one-half of the atomic nuclei of a radioactive sample to decay (change spontaneously into other nuclear species by emitting particles and energy), or, equivalently, the time interval required for the number of disintegrations per second of a radioactive.

How do you calculate half-life decay?

The time required for half of the original population of radioactive atoms to decay is called the half-life. The relationship between the half-life, T1/2, and the decay constant is given by T1/2 = 0.693/λ.

The half-life of the radioisotope is 8 hours.

Half life=total life/2

Half life=16/2

Half life=8 hours

Thus, the half-life of the given radioisotope is 8 hours.

To know more about half-life:

https://brainly.com/question/19337635

#SPJ4

Answer:

HERE:

Explanation:

The balance equation is what it is already: CH₄ + 2O₂ → CO₂ + 2H₂O

The type of chemical reaction is combustion reaction.

Light and energy will accompany the product as a result of this reaction.

The law of conservation of mass makes sure the masses of the

molecules are same on both sides of the equation. Therefore, the mass of each element on both sides must be equal.

Hope that helps, I tried bai and Goodluck in school! <3

Cyber protection condition establishes CPCON 2 (High: Critical and Essential Functions)

CPCON 1 (Very High: Critical Functions)

CPCON 3 (Medium: Critical, Essenti.al, and Supp0rt Functions)

CPCON 4 (Low: All Functions)

CPCON 5 (Very Low: All Functions)

Protecting your systems, apps, and networks from cyberattacks is known as cybersecurity. The following are only a few examples of cybersecurity types:

Using methods like remote access management and two-factor authentication, network security protects internal networks from illegal access (2FA)

Application security guards against theft and unauthorized use of data and code in mission-critical software, both in use and in development. Examples of this include penetration testing and encryption.

User education: educating staff members and clients on the best practices to follow when avoiding cyberattacks such malware and phishing scams

The difference between cybersecurity and cyber protection is how they handle data. Data protection is not the main emphasis of cybersecurity; rather, it is the protection of the systems that enable data access, storage, transmission, and authentication. Bypassed or rendered inoperable by unidentified threats,

Learn more about Cyber protection here:

https://brainly.com/question/25343682

#SPJ4

The balanced equation in a reaction involving the Combination reaction  of solid calcium oxide and carbon dioxide gas into solid calcium carbonate would be:

[tex]CaO(s)+Co_{2}(g) -- > CaCo_{3}(s)[/tex]

Equation of reactions contains ;

-Solid calcium carbonate goes by the chemical formula : CaCO3 (s)

-Solid calcium oxide goes by the chemical formula: CaO (s)

-Carbon dioxide gas goes by the formula: CO2 (g)

Putting everything together in a single reaction and balancing out the number of atoms on each side of the equation will give;

[tex]CaO(s)+Co_{2}(g) -- > CaCo_{3}(s)[/tex]

What is combination reaction ?

A combination reaction is a reaction in which two or more substances combine to form a single new substance. Combination reactions can also be called synthesis reactions. The general form of a combination reaction is: A+B→AB. One combination reaction is two elements combining to form a compound.

Learn more about balanced equation here ; brainly.com/question/8062886

#SPJ4

As bond number increases (double bonds rather than single, triple rather than double etc. ), bond length decreases and bond energy increases

Reason-Charges that are spaced apart are described by a dipole moment. There are two critical criteria that must be taken into account when assessing if a molecule has a dipole moment. It must first possess polar covalent bonds. The individual dipoles must not cancel out in the molecular structure, which is the second requirement. Because Br2 is not a polar molecule, it lacks a polar covalent bond.A  bond number is a simple addition of two numbers that total the sum. Using number bonds, one can quickly determine the answer without performing any calculations. We can see from the example that when we see a number bond, we know the answer without having to calculate.

Learn more about bond number here:

https://brainly.com/question/10429880

#SPJ4

Answer:

B. Convection within the mantle is bringing magma up to the crust in the middlw of the Atlantic Ocean,building new sea floor. Do you have mrs cogliati?

Explanation:

i have it 4 mrs.cogliati

The standard reaction entropy is 160.6 J/mol*K for the breakdown of 1 mol of calcite to carbon dioxide and white precipitate oxide at 25 °C.

What does the word "reaction" mean in chemistry?

One or more substances—known as reactants—are transformed into one or more other substances—known as products—in a chemical reaction. Substances are made up of chemical components or chemical elements.

What sort of reaction?

The five basic types of chemical processes are synthesis, breakdown, one, double replacement, and combustion. By analyzing the reactants and products, you can assign a reaction to one of these categories. Some reactions will fall into more than one category.

For more questions like Reaction click the link below:

https://brainly.com/question/29661133

#SPJ4

The reciprocal of the forward reaction's Keq,

Keq = 1/2.54

Keq = 0.394 for the reverse reaction, is the equilibrium constant for the reverse reaction.

The forward reaction rate constant divided by the reverse reaction rate constant gives the equilibrium constant.

What does K equating to 1 at equilibrium mean?

The concentration of the reactants is high at equilibrium if Keq is a small number (Keq1). In this instance, the reaction is in favour of reactants forming. Keq 1 indicates that there are considerable amounts of both reactants and products at equilibrium.

R's value is dependent on the units used, however it is typically expressed in S.I. units.

To know more about equilibrium constant, visit:

https://brainly.com/question/10038290

#SPJ4

Answer:

fusion, vaporization, sublimation

The acetic acid in vinegar has a molar concentration of 0.530 M.

How much molar concentration is there?

When the chemical formula and molecular weight of the drug are known, the concentration can be calculated. Any substance's molar concentration in a solution can be simply calculated.

Molar concentration is the measurement of a solution's concentration as the No.  of moles of a solute inside a liter of a solution.

The following equation can be used to compute the concentration or volume of the solutions:

M₁V₁ = M₂V₂

where M1, V1, M2, and V2 represent the volume and concentration of the concentrated & diluted solution, respectively.

Given a NaOH concentration, M1 = 0.1931 M (which should be necessary to apply the broth dilution),

and to calculate the molar concentration of acetic acid)

The volume of NaOH, V1, is 27.48 mL.

V2 = acetic acid volume in milliliters

In equation (1), substitute the values of V1, M1, and V2 as well as volume:

(0.1931) X (27.48) = (10) X (V₂)

V₂ = 0.530 M

To learn more about concentration please click on below link

https://brainly.com/question/10725862

#SPJ4

The given reaction equation for photosynthesis whereby, in the presence of light energy from the Sun and chlorophyll, plants synthesize glucose from carbon dioxide and water.  As water is present as a reactant, it doesn’t also appear on the ’products’ side of the equation. So:

Water + carbon dioxide > glucose + oxygen.

As glucose contains 6 carbon atoms, these must be obtained from 6 molecules of CO2. So, overall:

6CO2(g) + 6H2O(l) > C6H12O6(aq) + 6O2(g).

What is photosynthesis?

Photosynthesis is the process  plants and other organisms use to convert light energy into chemical energy, which is later released through cellular respiration to power the activity of the organism.

Therefore, This is the equation for photosynthesis whereby, in the presence of light energy from the Sun and chlorophyll, plants synthesize glucose from carbon dioxide and water.

To learn more about photosynthesis refer the given link:-

https://brainly.com/question/26071939

#SPJ4

Answer:

A.electric

Explanation:

electric is very useful in ingines

Answer: A.

Explanation:

800 ml of water should be used to dissolve 203.3 g of MgCl2 • 6H2O. Using water, adjust the volume to 1 liter. Create aliquots and autoclave to sterilize. It should be noted that MgCl2 is highly hygroscopic.

Therefore, the given mass is equal to the number of moles divided by the given mass will be equal to the number of moles multiplied by molar mass, so the number of moles was 250 multiplied by 10 to the power minus 6 multiplied by molar mass, which is given in the question, so mass required, will be 0.0149 gram.

Learn more about the  mass

https://brainly.com/question/29526566

#SPJ4,

A net ionic equation must be balanced on both sides. In most cases, net ionic equations are the only way to model precipitation reactions.

What is ionic equation?

Ionic equations are chemical formulas in which the electrolytes in aqueous solution are stated as dissociated ions, in contrast to molecular equations, which express compounds as molecules.

What is precipitate ?

A solid produced when a solution changes, frequently as a result of a chemical reaction or temperature shift that makes a solid less soluble.

The only reaction depicted in the net ionic equation is precipitation. Not only in terms of the atoms of the constituent elements, but also in terms of the electric charge, a net ionic equation must be balanced on both sides. In most cases, net ionic equations are the only way to model precipitation reactions.

Therefore,  a net ionic equation must be balanced on both sides. In most cases, net ionic equations are the only way to model precipitation reactions.

Learn more about ionic equation from the given link.

https://brainly.com/question/15170545

#SPJ4

Answer:

Explanation:

Molarity given = 0.2 mol dm ^ -3

wieght of potassium chloride = 2.98g

molar mass of potassium cloride = 74.5

let us assume vol. of water needed= x

molarity = weight  * 1000 / molar mass * volume

             0.2 = 2.98 * 1000 / 74.5 * x

             0.2  = 2980 / 74.5x

            74.5x = 2980 / 0.2

            74.5 x = 14900

            x = 200

hence, volume required is 200 ml

Water can wear down the earth's surface at scales that are large and small in size or short and long in duration by carrying away bits of soil and sand and slowly wash away the sediment.

Weathering is referred to as the breaking or wearing down of rocks as a result of certain factors such as rain, glacier etc. They also form cracks in the rocks after which disintegration sets in after a while.

Water as an important factor has the ability to wear down the earth's surface at scales that are large and small in size or short and long in duration which is known as erosion. It involves carrying away bits of soil and sand and slowly washing away the sediment which are therefore the ways in which it occurs and is the correct choice.

Read more about Weathering here https://brainly.com/question/829782

#SPJ1

The molarity of the base would be 0.36 M.

What is Molarity?

The number of moles of dissolved solute per litre of solution is the definition of molarity, a unit of concentration. Molarity is defined as the number of millimoles per millilitre of solution by dividing the number of moles and the volume by 1000. A precise 1.000 mole of KCl (74.55 g) must be dissolved in a quantity of water or another solvent to produce a precise 1.000 litre of solution in order to create a 1.000 M solution of KCl.

In actuality, this concentration unit is frequently abused. Since KCl is totally dissociated, the solution, for instance, with water as the solvent, is exactly 1.000 M in K+ and 1.000 M in Cl.

Recall that: mole = molarity x volume

Also; molarity = mole/volume

Mole of 0.624 M, 27.4 mL HBr = 0.624 x 27.4/1000

                                                 = 0.017 mol

If the mole of HBr is 0.017 mol, the equivalent mole of NaOH will also be 0.017 mol.

0.017 mol of 47.2 mL (0.0472 L) NaOH would molarity of:

0.017/0.0472 = 0.36 M

In other words, the molarity of the NaOH is 0.36 M.

Learn more about Molarity from given link

https://brainly.com/question/26255204

#SPJ4

When sodium carbonate and magnesium nitrate solutions are combined, a precipitate is created as a result of a double-displacement process. As you balance the chemical equation, make predictions about the reaction's byproducts.

A solid may form when the solutions of two soluble salts are combined. Salts that are insoluble are created during precipitation processes. When magnesium sulfate and sodium carbonate are combined, magnesium carbonate, an insoluble salt, results.

What takes place when sodium carbonate and hydrochloric acid interact? When sodium carbonate is added to hydrochloric acid, a double displacement reaction takes place, resulting in the formation of sodium chloride, water, and carbon dioxide. The sodium carbonate and the two moles of HCl combine to generate carbonic acid.

to know more about magnesium and sodium carbonate here:

brainly.com/question/28901831

#SPJ4

Concentration of sliver ions in the solution= 175.3ml*1L/10³*3.50/1L

Concentration of sliver ions in the solution= 0.6135

1) Percent concentration: This is the quantity of solute that dissolves in 100 g of solvent. If a solution's concentration is 20%, we know that there are 20 g of solute in every 100 g of solution. As an illustration, a solution is made by mixing 10 g of salt and 70 g of water. by % mass, determine the solution's concentration.

The Latin argentum and Sanskrit argunas, both meaning "bright," are where the word "Ag" originates. Even in the Stone Age, silver was used. Silver use dates back at least 5000 years, according to archeological findings.

Learn more about silver here:

https://brainly.com/question/6434391

#SPJ4