What did mendeleev contribute to the periodic table.

The spatial separation between Carbon-12 and Carbon-13 each with a given speed 6.667 x 10^5 m/s is 28.2 x 10^-7 m

The spatial separation between two isotopes of carbon, carbon-12 and carbon-13, can be determined using Mass Spectrometry. Mass Spectrometry uses a combination of magnetic and electric fields to separate ions of different masses based on their charge-to-mass ratio.

The two isotopes of carbon, each singly ionized (e), have a speed of 6.667 x 10^5 m/s and enter the bending region of a mass spectrometer, where the magnetic field is 0.85 t. After they have traveled through a half-circle, the spatial separation between the two isotopes will be calculated using the following formula:

Separation (S) = Speed (V) x Magnetic Field (B) x Time (T)

In this case, Time (T) = (π/2)/V = (π/2)/(6.667 x 10^5 m/s) = 4.5 x 10^-7 s

Therefore, the spatial separation between the two isotopes after they have traveled through a half-circle will be:

Separation (S) = 6.667 x 10^5 m/s x 0.85 t x 4.5 x 10^-7 s = 28.2 x 10^-7 m

Learn more about Mass spectrometer : https://brainly.com/question/16171167

#SPJ11

Answer:

In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid chemical compound with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form. The geological definition of mineral normally excludes compounds that occur only in living beings. Antimony,Asbestos,Barium,Columbite-tantalite,Copper,Feldspar,Gypsum, and Halite

Explanation:

Hope this helps

have a great day

Answer:

=> Minerals are the natural substances from the earth crust .

some minerals are :-

i) Iron

ii) Manganese

iii) copper

iv) Iodine

v) zinc

Answer:

2:38

Explanation:

Answer:

2.58 good luck with everything

Using the formula M1V1 = M2V2, the molarity of M1 = 5M, V1 = 30mL M2 = x V2 = 300mL is 0.5M. Option B is the correct answer.

To solve for the unknown in the given problem, we need to use the formula M1V1 = M2V2. This formula states that the amount of solute (Molarity) in a solution is constant, as long as the volume of the solution is constant.

We are given M1 = 5M and V1 = 30mL, and we need to find M2, given V2 = 300mL. Substituting these values into the formula, we get:

5M × 30mL = M2 × 300mL

Simplifying this equation, we get:

150 = 300M2

Dividing both sides by 300, we get:

M2 = 0.5M

Therefore, the answer is B. 0.5M, which represents the molarity of the unknown solution. In summary, we used the formula M1V1 = M2V2 and substituted the given values to find the unknown molarity, which was the solution to the problem.

Learn more about Molarity at

https://brainly.com/question/8732513

#SPJ4

To obtain pH 8, multiply the [H+] concentration at pH 6 by 0.01

From the question given above, the following data were obtained:

pH = –Log [H+]

8 = –Log [H+]

Multiply through by –1

–8 = Log [H+]

Take the anti-log of –8

[H+] = anti-log (–8)

[H+] = 1×10⁻⁸ M

pH = –Log [H+]

6 = –Log [H+]

Multiply through by –1

–6 = Log [H+]

Take the anti-log of –6

[H+] = anti-log (–6)

[H+] = 1×10⁻⁶ M

[H+] at pH 8 / [H+] at pH 6 = 1×10⁻⁸ / 1×10⁻⁶

[H+] at pH 8 / [H+] at pH 6 = 0.01

Cross multiply

[H+] at pH 8 = 0.01 × [H+] at pH 6

Thus, to obtain pH 8, multiply the [H+] at pH 6 by 0.01

Learn more about pH:

https://brainly.com/question/21881762

#SPJ4

KSCN or potassium thiocyanate will degrade the sample overtime. Therefore, we need to wait to add kscn to add just before absorbance measurements.

Potassium thiocyanate is a chemical compound used for the electroplating of metal surface and also used as an analytical reagent in colorimeter tests.

    Colorimeter is a device used for calculating the concentration of a sample or the absorbance of a sample through a certain wavelength of polarized light. Colorimeter runs on the application of Beer-Lambert's law also known as Beer's law that states that, the absorbance and concentration of a solution is directly proportional to each other.

    According to Beer-Lambert's law, we need to add a certain reagent such as- potassium thiocyanate or biuret's reagent to the solution as they deviate the polarized light and given the reading of the absorbance of the solution. Even though, the reagents help us in getting the correct result of the colorimetry test, it can also degrade the solution by breaking the compounds present in the solution.

Thus, we need to add the reagents right before taking the reading to prevent any kind of mishappening.

Learn more about Beer-Lambert's law at,

https://brainly.com/question/13200019

#SPJ4

If we are given the enthalpy change (∆H) for the reaction 2Al(s) + 3Cl2(g) → 2AlCl3(s), we can use it to determine the amount of heat released or absorbed during the reaction under different conditions.

(a) To determine the additional information needed to calculate the standard entropy change (∆S°) for the reaction, we can use the Gibbs free energy change (∆G) equation:

∆G = ∆H - T∆S where T is the temperature in Kelvin.

At constant pressure, the change in Gibbs free energy (∆G) is equal to the maximum amount of work that can be obtained from the system, so for a spontaneous reaction (∆G < 0), the reaction will release energy in the form of heat.

At constant temperature, we can use the equation:

∆G° = -RT ln K where R is the gas constant, T is the temperature in Kelvin, and K is the equilibrium constant for the reaction.

We can use the relationship between ∆G and ∆G° to calculate ∆S°:

∆G° = ∆H° - T∆S°

Since ∆G° and ∆H° can be determined experimentally, we can use the above equation to solve for ∆S°:

∆S° = (∆H° - ∆G°) / T

Therefore, we need to know the temperature at which the reaction occurs and the equilibrium constant (K) at that temperature in order to calculate ∆S° for the reaction.

Learn more about enthalpy change here:

#SPJ11

Answer:

higher temperature, more kinetic energy, more space between particles, higher volume

This is true because increase in temperature kinetic energy increase so molecules move apart and increase volume

Explanation:

Answer:

for the how to get a carrot to float you would need to make a hole in it and make it hollow

Explanation:

Answer:

C₂H6

Explanation:

Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). Option A

A hydrocarbon is a compound that consists of only carbon and hydrogen atoms. It is important to identify the formula that represents a hydrocarbon among the given options:

A) C₂H6: This formula represents ethane, which is a hydrocarbon. Ethane consists of two carbon atoms bonded together with single bonds and six hydrogen atoms.

B) C₂H5OH: This formula represents ethanol, which is not a hydrocarbon. Ethanol contains a hydroxyl group (-OH), indicating the presence of oxygen in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.

C) C₂H5Cl: This formula represents ethyl chloride, which is not a hydrocarbon. Ethyl chloride contains a chlorine atom (Cl) in addition to carbon and hydrogen atoms. It is a haloalkane, not a hydrocarbon.

D) C₂H6O: This formula represents ethanol, which, as mentioned before, is not a hydrocarbon. Ethanol contains an oxygen atom (O) in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.

Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). It consists only of carbon and hydrogen atoms, making it a suitable representation of a hydrocarbon.

In summary, the formula C₂H6 (option A) represents a hydrocarbon, while the other options contain additional elements (oxygen or chlorine) that make them non-hydrocarbon compounds. Option A

For more such questions on hydrocarbon visit:

https://brainly.com/question/21281906

#SPJ8

The final temperature of the water is 64.59°C.

Given,

Heat (Q) = 3.31 x 103 J

Mass of water (m) = 18.5 gm

Initial temperature (Ti) = 22°C

Final temperature =?

Specific heat - The heat required to raise the temperature of a substance by one-degree Celcius. The relation between heat and temperature change is Q = m × c × ΔT.

where Q = heat energy

m = mass of the substance

c = specific heat of the substance

ΔT = change in temperature

Now, we will use the same formula to calculate the final temperature of the water-

Q = m × c × ΔT

Q = m × c × ( final temperature - initial temperature)

3.31 x 103 = 18.5 x 4.2 x (final temperature - 22)                  

(Specific heat of water (c) = 4.2 J/g degrees Celcius)

3.31 x 103 = 77.70 x (final temperature - 22)

3.31 x 103 / 77.70 = final temperature - 22

33100/777 = final temperature - 22

42.59 = final temperature - 22

Final temperature= 42.59 + 22 = 64.59°C

Hence, the final temperature of the water is  64.59°C.

To learn more about temperature and specific heat, visit: https://brainly.com/question/18912282

#SPJ1

2. The interaction involved in the B⁺-decay is known as beta decay.

3.  The conserved quantities in the reaction are:

The quark flavor is not a conserved quantity in the given reaction of B⁺-decay.

The B⁺-decay is a type of beta decay, specifically beta plus decay. In beta plus decay, a proton (p) decays into a neutron (n), emitting a positron (e+) and an electron neutrino (νe):

p → n + e⁺ + νe

2. The interaction involved in the B⁺-decay is the weak nuclear force. The weak force is responsible for processes involving the transformation of particles, such as the conversion of a proton into a neutron in this case.

The interaction involved in the B⁺-decay is known as beta decay. Specifically, the B⁺-decay refers to the decay of a positively charged (B⁺) meson, which is a type of subatomic particle.

3. The conserved quantities in the reaction are:

Conservation of electric charge: The total charge on both sides of the reaction is conserved. The proton (p) has a charge of +1, while the neutron (n) has no charge. The positron (e⁺) has a charge of +1, which balances out the charge.

Conservation of lepton number: The total lepton number is conserved in the reaction. The lepton number of the proton and neutron is 0, while the lepton number of the positron and electron neutrino is also 0. Hence, the lepton number is conserved.

Conservation of baryon number: The baryon number is conserved in the reaction. The baryon number of the proton is 1, and the baryon number of the neutron is also 1. Therefore, the total baryon number is conserved.

Regarding quark flavor, it is not conserved in the B⁺-decay. The decay process involves the transformation of a up-type quark (u) in the proton to a down-type quark (d) in the neutron. This change in quark flavor is allowed by the weak force.

Learn more about Weak Nuclear Force at

brainly.com/question/31753095

#SPJ4

Hi there, here's your answer:

The equilibrium constant of a reaction, is the ratio of the molar concentration of products to the reactants raised to the power of their stoichiometric coefficients. In a balanced chemical equation, it is constant at a given temperature.

It is denoted as \(k_{c}\)

Example:

For a reaction Aa + Bb -> Cc + Dd
Where a and b are the reactants, c and d are the products and A, B, C and D are their respective stoichiometric coefficients, the equilibrium constant for the following reaction would be:

\(\frac{[a]^{A}[b]^{B} }{[c]^{C}[d]^{D} }\)

Hope it helps! Please mark as brainliest!

Answer:

Its ionic charge is 4+

Its ionic charge is 4+Zr⁴⁺ + O²⁻ ––> Zr₂O₄ ––> ZrO₂

Explanation:

I hope it will be helpful for you.

The answer is C.

The reactants are charcoal that is unlit + oxygen and the products are the burnt charcoal + energy.

So for every combustion reaction like this one, CxHy is the wood. So before you light the wood, it is actally a reactant together with oxygen, because without oxygen the wood will not burn. So under the influence of heat, wood produces substances like carbon dioxide and heat, the moment you see wood burning it it already producing products, CO2 and heat (which is the fire). This is a combustion reaction.

Combustion reaction is exothermic because it releases energy.

The speed of the particles rises with the temperature of the solid, liquid, or gas. The particles slow down with decreasing temperature.

A liquid can turn into a solid if it is cooled down far enough.

The average kinetic energy of the molecules falls as a liquid cools.

The liquid eventually turns into a solid when the quantity of heat removed is sufficient to cause the molecules to be attracted to one another.

Freezing is the process of transitioning from a liquid to a solid.

It loses thermal energy when the liquid cools. Its constituent particles therefore decelerate down and converge.

learn more about kinetic energy refer

https://brainly.com/question/25959744

#SPJ13

In a system, there are 2 singly linked lists. Another of the linked lists' end nodes was accidentally linked to a second list, creating an inverted E s list. Create a program to find the intersection of two linked lists.

The head of both the linked list is the first node. The value of said neck points to NULL if somehow the link list is empty. In a list, each node has at least two components:

The head of a list refers to the point at which a linked list can be accessed. Head is not an distinct node, it should be highlighted.

Items that show up in the same location in two related circumstances are said to be corresponding objects. Angles are a common example, as demonstrated here. Because they are located in the same spot in the two related shapes, angle A here on left corresponds to angle K on the right. We claim K is the equivalent of A.

To know more about comparable value visit:

https://brainly.com/question/24405173

#SPJ4

Answer:

12 and 20 moles ratios, respectively.

Explanation:

Note that the number of mole ratios you can write for a chemical reaction involving a total of n substances is (n)(n–1). Thus, for reactions involving four and five substances, you can write 12 and 20 moles ratios, respectively.

*** HOPE IT HELPS! :)

In the molecule CH2SiH2, the carbon atom and the silicon atom are connected by a double bond consisting of one sigma bond and one pi bond.

The pi bond is formed by the overlap of two p orbitals, one from the carbon atom and one from the silicon atom.To form the pi bond, the carbon atom uses its 2p orbital and the silicon atom uses its 3p orbital. These orbitals have the correct orientation and energy to overlap effectively and create the pi bond.

The sigma bond between the carbon and silicon atoms is formed by the overlap of the sp hybrid orbitals on the carbon and silicon atoms.Overall, the CH2SiH2 molecule has a tetrahedral shape and the pi bond is located in the plane perpendicular to the carbon-silicon sigma bond.

To learn more about atomic orbitals refer to

brainly.com/question/28240666

#SPJ4

The number of atoms of carbon in 2.973 moles would be 1.791 x 10^24 atoms

The Avogadro's number (number of particles per mole) is 6.022 x 10^23.

To determine the number of atoms of carbon in 2.973 moles, we can use the following calculation:

Number of atoms of carbon = (2.973 moles) x (6.022 x 10^23 atoms/mol)

                               = 1.791 x 10^24 atoms

Therefore, the dog would have 1.791 x 10^24 atoms of carbon in its stomach if it consumed 2.973 moles of pure graphite.

More on the number of atoms in moles of substances can be found here: https://brainly.com/question/7013021

#SPJ1

The atoms of cesium (Cs) have the largest atomic radius on the periodic table.

Cesium has the chemical symbol Cs and the atomic number 55. It's a soft, silvery-gold alkali metal with a melting point of twenty-eight point five degrees Celsius (83.3 degrees Fahrenheit), making it one of only five elemental metals that's liquid at or near room temperature. Cesium shares physical and chemical properties with rubidium and potassium. Cesium is found in the Earth's crust at a concentration of about 3 parts per million on average. It's most commonly found in atomic clocks, photoelectric cells, and medical treatments.

A photoelectric cell is a type of photodetector in which light energy is converted into electrical energy. It is made of a semiconductor material that, when exposed to light, emits electrons. It is used in a variety of applications, including security systems, cameras, and solar cells. Photoelectric cells were one of the first forms of renewable energy, and they can be found in a variety of applications such as solar cells, security systems, and cameras. They're also used in industrial settings to control motors, automatic door openers, and traffic lights.

To  know more about  Cesium:

brainly.com/question/24316293

#SPJ4

Answer:

C

Explanation:

A mineral is a composition of different rocks, therefore it is not alive and non livine. It is also not man made, but natural

Answer:

V = 25.7 L.  

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to solve for the volume of hydrogen, by firstly calculating the moles of this gas produced by 37.6 g of magnesium, according to the 1:1 mole ratio between them:

\(n_{H_2}=37.6gMg*\frac{1molMg}{24.305gMg}*\frac{1molH_2}{1molMg}=1.55molH_2\)

Now, we use the ideal gas equation:

\(PV=nRT\)

To solve for the volume, and obtain:

\(V=\frac{nRT}{P}\\\\V=\frac{1.55mol*0.08206\frac{atm*L}{mol*K}*293.15K}{1.45atm}\\\\V=25.7L\)

Regards!

Hello

A chiral carbon atom is an atom that is attached to four different groups of atom. In the 3 structures given, only two atoms have a chiral center.

I'll proceed to draw the structure and indicate the chiral atom below.

If we look at this chiral carbon, we would notice some different in this particular carbn atom and that it is surrounded by 4 different carbon atoms namely

If we carefully look at this, we would see that it is bonded with CH₂, H, NH₂ and COO

In the second structure, we can see that there's no carbon atom that possess this distinctive and unique characteristic of a chiral center.

Lastly, in this compound, we have a carbon atom with one chiral center which is the second carbon atom. Just like in the pervious question above, it is surrounded by CH₂, H, NH₂ and COOH atoms and this makes it a chiral center.

In the question given, only compound 1 and 3 have one chiral carbon atoms.

Answer: Two to one.

Explanation: You need 2 hydrogen atoms (H2) and one oxygen atom (O) to make water (H2O).  Notice that hydrogen comes before oxygen, which means that our ratio is 2:1 because of the two hydrogen atoms and one oxygen atom.  Therefore, that's your answer.

Hope this helps! :)

Answer:

City B has the larger annual temperature range

Explanation:

This is correct option because generally the northern side of the equator is high in temperature than the southern hemisphere part.

Since the southern side of the equator or Southern Hemisphere, where city A resides will generally have higher altitude or rise, so this creates higher average temperature.

Answer:

393.75mL

Explanation:

We know that

C1V1= C2V2

where C = centration, V= volume

C1= 0.45 M

V1= 175 mL = 0.175 L

C2 = 0.2M

⇒V2= C1V1/C2

⇒V2 = 0.175×0.45/0.2

=0.39375L

Therefore, amount of water needed= 393.75mL

We can use the relativistic energy-momentum relation to solve this problem Therefore, the velocity of the electron is approximately 0.999999954 times the speed of light.

Relativistic effects are observed when the speed of an object approaches the speed of light. At these speeds, the object's kinetic energy and momentum increase significantly, and classical equations for energy and momentum no longer hold true. Instead, special relativity equations must be used to calculate the object's behavior.

To know more about speed visit :

https://brainly.com/question/17661499

#SPJ11