what volume in \pu{ml}ml of 6.00 \pu{m}m acetic acid is needed to make 200 \pu{ml}ml of 0.05 \pu{m}m acetic acid?

Answer:

It's a chemical change.

Explanation:

The process of burning (as opposed to evaporating) is a chemical reaction, a chemical change. The wax molecules are undergoing a chemical change; they are changing into different molecules by reacting with a substance in the air.

A solid with a covalent network is silicon dioxide. Carbon dioxide is a covalent molecule, whereas magnesium oxide is an ionic substance.

It is a covalent molecule, carbon dioxide. Although the complex has polar C-O bonds, it is often nonpolar, therefore the molecules are only held together by modest dispersion forces.

Ionic solids include the substance magnesium oxide. It has a crystal lattice made up of magnesium ions and oxygen ions. The chemical is almost insoluble in water because of the significant lattice energy and small ion sizes.

Chains of silicon-oxygen bonds make up the covalent network solid known as silicon dioxide. The network solid has a high melting point and creates a very stiff structure.

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After alpha particles were bombarded onto sheets of gold, the Rutherford model was developed. This model proposed that the atom was composed of a small, dense, positively charged core called the nucleus, with electrons orbiting around this nucleus.

The Rutherford model is a model of the atom that was proposed by Ernest Rutherford in 1911. It was based on his experiments with alpha particles. In the model, the atom is composed of a small, dense nucleus with positive charge surrounded by electrons that orbit the nucleus. The Rutherford model is unable to explain the stability of atoms and the nature of the electromagnetic force, but it did provide a starting point for the development of more sophisticated models of the atom.

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According to the given statement 1.24 M was the concentration of the hcl solution.

One of the main tools for connecting, managing, and running networked enterprise applications in a failover clustering infrastructure is a hyper - converged architecture (HCI) solution (HCI). Organizations may virtualize data, servers, and networks thanks to technology.

The balanced reaction is 2 HCl + Na₂CO₃ ==> CO₂ + H₂O + 2 NaCl

This shows that each mole of CO₂ created results in

There are two moles of HCl needed. So, starting with the atomic weights of carbon and oxygen, let's determine how many moles of CO₂ were produced.

Atomic weight carbon = 12.0107

Atomic weight oxygen = 15.999

Molar mass CO₂

= 12.0107 + 2 * 15.999

= 44.0087 g/mol

Moles CO₂ = 15.1 g / 44.0087 g/mol = 0.388559535 moles

We know we needed twice as much HCl based on the balanced equation,

so 0.388559535 mol * 2 = 0.77711907 mol

Simply divide the amount of moles by the number of liters because molarity is defined as moles per liter,

so: 0.77711907  mol / 0.625 l = 1.24339051 mol/l

Since our data only has three significant figures, round it to three figures to get 1.24 m.

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I would expect the dissolved oxygen levels from wаter entering а lаke to hаve lower thаn the lаke itself becаuse the steаm is аble to hаve wаrm wаter which cаn cаuse the lаke temperаture to be wаrm аlso. Hаving wаrm wаter meаns hаving less dissolved oxygen.

Dissolved oxygen (DO) is the аmount of oxygen thаt is present in wаter. Wаter bodies receive oxygen from the аtmosphere аnd from аquаtic plаnts. Running wаter, such аs thаt of а swift moving streаm, dissolves more oxygen thаn the still wаter of а pond or lаke. Heаlthy wаter should generаlly hаve dissolved oxygen concentrаtions аbove 6.5-8 mg/L аnd dissolved oxygen sаturаtion between аbout 80-120%.

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The solution for addressing transportation concerns and reducing the amount of carbon dioxide released into the atmosphere might include promoting vehicles powered by renewable energy sources to harvest the crops and get them to market (Option B).

The expression renewable energy sources make reference to different types of energy that replace the use of fossil based fuels in order to avoid the increase in the carbon dioxide level.

Therefore, with this data, we can see that renewable energy sources such as wind energy or solar energy replace fossil based fuels.

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Answer:

Exoplanets

Explanation:

Exoplanets are planets beyond our own solar system. Thousands have been discovered in the past two decades, mostly with NASA's Kepler Space Telescope.

The isotope that has the highest percent abundance is Os-190.

We know that the amount of the element that can be found in the universe does differ because the element is composed of isotopes. The isotopes are the atoms of the element that have the same atomic number but does have different mass numbers.

Now we know that the two common isotopes of osmium are Os-190 and Os-191. The isotope that would have the highest percent abundance is the isotope whose mass is closer to the relative atomic mass of osmium which is 190.23.

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T-butyl chloride changes its ppt formed  and color more quickly with ague and an indicator than other chlorides do.

The hydrant A color shift was caused by the addition of AgNO3 when a product like Hl reacted with the acid-base indicator MethyL red. The released chloride ion was found by Agel precipitation at ambient temperature. Both a color change in an indicator and a precipitate format positively confirmed that the reactivity order in both cases is t-butyl chloride > n-butyl chloride. As a result, t-butyl chloride changes its ppt formed  and color more quickly with ague and an indicator than other chlorides do.

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The ground state electronic configuration of Nitrogen atom is 1s²2s²2p³

The ground state electronic configuration of vanadium atom is 1s²2s²2p⁶3s²3p⁶4s²3d³

Electron configuration is the distribution of electrons within an atom or molecule (or other physical structure) in atomic or molecular orbitals. For example, the electron configuration of the neon atom is 1s²2s²2p⁶. This means that the 1s, 2s and 2p subshells have 2, 2 and 6 electrons respectively.

The electronic configuration of a type of atom (neutral or ionic) allows us to understand the shape and energy of its electrons. Many general rules are followed in assigning an electron's "position" to its possible energy states, but these assignments are arbitrary and it is always unknown which electron is being described. Knowing the electronic configuration of a species allows us to better understand its binding ability, magnetism and other chemical properties.

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Answer:

A planetary scientist who works at john hopskin university

Explanation:

Two lactate dehydrogenase isoenzymes interacting

what is affinity chromatography?

Affinity chromatography is a technique for extracting a biomolecule from a mixture that relies on a very particular macromolecular binding relationship between the biomolecule and another component. Depending on the biomolecule of interest, the specific type of binding contact may be between an antigen and an antibody, an enzyme and a substrate, a receptor and a ligand, or a protein and a nucleic acid. Binding interactions are routinely used to isolate different biomolecules. When compared to other chromatographic techniques, affinity chromatography is advantageous due to its high selectivity and resolution of separation.

In order to study the effects of pH and temperature on lactate dehydrogenase binding, immobilized NAD+ matrices were used to study the interactions of two isoenzymes of lactate dehydrogenase from pig heart muscle (H4) and rabbit skeletal muscle (M4). Investigated was how substrate, product, and sulphite affected the binding of heart muscle lactate dehydrogenase to immobilised NAD+. It was determined how the two lactate dehydrogenase isoenzymes interacted with immobilised pyridine and adenine nucleotides and their derivatives. Correlations between these factors' effects on lactate dehydrogenase's interaction with immobilised nucleotides and the known kinetic and molecular characteristics of the enzymes in free solution were found.

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Due to same d-same shell, that's why first ionization energy of the transition elements .

Ionization energy, also called ionization potential, in chemistry and physics, the amount of energy required to remove an electron from an isolated atom or molecule.

Transition elements (also known as transition metals) are elements that have partially filled d orbitals. IUPAC defines transition elements as an element having a d subshell that is partially filled with electrons, or an element that has the ability to form stable cations with an incompletely filled d orbital.

In transition elements, the first ionization energy of the elements remain constant because of poor shielding in d-subshell. The electrons suffers repulsion due to which their ionic radii does not decrease on moving from left to right. That's why first ionization energy of the transition elements from Sc to Zn fairly constant until Zn.

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Answer:

The answer is sophisticated earthquake early-warning systems, increasingly accurate storm forecasting, and innovative flood risk and flood mitigation projects provide communities with the tools they need to respond to impending hazard events, and infrastructure design and engineering improvements help to reduce the damage suffered

Explanation:

I hope this helps

Partition coefficient Chloroform = 11.98, Diethyl Ether = 2.81 and Benzene = 1.05      

Chloroform would be the ideal solvent to use when extracting the chemical from an aqueous solution because it has the highest solubility.

A solution is a homogenous mixture of one or even more solutes in a solvent. Adding sugar cubes to a cup of tea or coffee is an example of a solution. A property that facilitates the dissolution of sugar molecules is solubility. Solubility is the property of a substance (solute) to dissolve in a particular solvent. A solute is any solid, liquid, or gaseous substance that dissolves in a solvent.    

The compound needs 2 grams of solvent to dissolve it.

Finding solubility

For water, 2g/90ml= 2.22

For chloroform, 2g/7.50= 26.6

For diethyl ether, 2g/32= 6.25

For benzene, 2g/85= 2.35

Partition Coefficients -

For chloroform = 11.98

For Diethyl Ether = 2.81

For Benzene = 1.05

As a result of its high solubility, chloroform would be used to extract a compound from an aqueous solution.

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The percent error of Joe’s results is equal to 10.07 %

The percent error can be described as the difference between the actual value and the measured or approximate value. The percent experiment is used in scientific experiments to check the accuracy of the experimental results.

The mathematical formula of the percent error can be represented as:

Percentage error = (Measured value - Exact value)/Exact value] ×100

Given, the volume measured by Joe = 60.1 ml

The actual volume of the object = 54.6 ml

The percent error =  (60.1 - 54.6)/54.6] ×100 = 10.07 %

Therefore, the percentage error of Joe's results is 10.07 %.

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The density of the material would be 1.75 gm/cc.

p = n'∑Ac + ∑AA/VcNA

= n'(∑Ac + ∑AA)/9³NA

=n'(∑Ac + ∑AA)/(2(rA + rX))³ NA

n' = number of atoms per unit cell

= 4(assumption)

rA = 0.137 × 10⁻⁷ cm

rX = 0.241 × 10⁻⁷ cm

NA = Avagadros number

= 6.022 × 10²³

∑Ac = Atomic weight of all cations

∑AA = Atomic weight of all anions

p = n'(∑Ac + ∑∑AA)/(2(rA + rx))³NA

= 4(22.7 + 91.4/(2(0.137 × 10⁻⁷ + 0.241 × 10⁻⁷))³ 6.022× 10²³

= 1.75 gm/cc

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A platinum wire is dipped into a strontium nitrate solution. Then inserted into a burner flame, then the strontium atoms emit a characteristic red color. this is an example of how an element can be identified by its unique atomic emission spectrum.

The goal of an atom's electron arrangement is to keep the energy of the atom as low as feasible. An atom's ground state has the lowest energy level of all the atoms. When the energy is applied to those atoms, the electrons take it in and go to a higher energy level. The electrons in atoms have quantized energy levels, which again means that they must transition from one level to another in discrete increments rather than constantly. An atom is said to be in an excited state when its potential energy exceeds that of the ground state. An excited atom is not a stable atom.

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The caloric value(in kcal/g) of the potato chips is 0.04467 kcal/g.

Heat absorbed by water:

[tex]Q=m.C.T\\Q=26.8 * (21.4-16.4)*1\\Q=0.134[/tex]

The caloric value of potato chips :

=Kcal/grams of potato chips

[tex]=0.134/3.0\\=0.04467 Kcal/g[/tex]

How to calculate heat absorbed?

Q = mc∆T

What is caloric value?

A food calorie is actually a “kilocalorie.”  In other words, it is the amount of energy needed to raise the temperature of one liter of water by one degree.

Thus, the caloric value of the potato chips is 0.004467Kcal/g

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Answer is Δs=0.3kJ/K

Since, the tank is insulated rigid tank, The process is constant volume process,

Air as perfect gas

Obtain the properties from the table. Consider th state 1. P=100kPa, T, = 15°C

s=6.830kJ/kg-K

v=0.827 m³/kg

Constant volume process,

Consider the state 2. T = 40°C, v, v = 0.827 m²/kg

5,6.890 kJ/kg-K

Calculate the change in entropy,

Δs=m(s, -s) =5(6.890-6.830)

Δs=0.3kJ/K

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Answer:

Bile

Explanation:

Bile is secreted by the liver to help in the breaking down of food particles.​

As we move across period 3 the number of delocalized electrons per metal atom increases and the radius of the elements decreases. This means the melting point increases.

What is melting point and boiling point ?

The temperature at which molecules in a solid can pass one another and transform into liquids is known as the melting point. On the other hand, liquids and gases are involved in the boiling point. Some molecules at the liquid's surface are escaping as the molecules move around.

The three metals' melting and boiling points rise as a result of the strengthening of their metallic connections. Each atom can contribute an increasing quantity of electrons to the delocalized "sea of electrons." As you get from sodium to magnesium to aluminum, the atoms also get smaller and have more protons.

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Nuclear equation: ninety-two 238 U → ninety 234 T h + 2 4 H e + power.

In nuclear physics and nuclear chemistry, a nuclear response is a method in which two nuclei, or a nucleus and an external subatomic particle, collide to supply one or greater new nuclides. accordingly, a nuclear response need to purpose a transformation of at the least one nuclide to some other.

Nuclear Fusion reactions electricity the sun and other stars. In a fusion response, two light nuclei merge to form a single heavier nucleus. The method releases strength due to the fact the whole mass of the resulting single nucleus is less than the mass of the two unique nuclei. The leftover mass turns into energy.

Nuclei with too many neutrons, too few neutrons, or which might be absolutely too massive are risky. They eventually rework to a stable form thru radioactive decay. wherever there are atoms with risky nuclei, there are nuclear reactions taking place clearly.

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The rotational spectroscopy looks like many peaks joined together in the shape of parabola. The number of peaks depends on the shape of the molecule. The peaks are 2B distance apart from each other.

What is rotational spectroscopy?

Rotational spectroscopy is an absorption spectroscopy where the energies of transitions between the energy levels of a molecule in the gas is measured. It is also called as microwave spectroscopy. Rotational spectroscopy only works on the molecules which have permanent dipole moment.

In rotational spectroscopy each line represents a transition between energy levels.

E = BJ (J+1)  

where J = energy level, B = rotational constant.

When the transition is from J = 0 to J = 1,

E = E(f) - E(i) = B x 1 (1+1) - B x 0 (0+1) = 2B - 0B = 2B.

Therefore, the spacing between the peaks in Rotational spectroscopy is 2B. The number of peaks depends on the shape of the particular molecule.

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The energy transfer in the form of light or heat is called radiant energy. Thus the flow of electric current can be called as radiant.

Radiation is a mod of energy transfer through vacuum and the electromagnetic radiations are such energy transfer from stars and space which hits the earth surface.

Sound is a mechanical wave only travels through a medium whereas electromagnetic waves does not need a medium to travel. Electromagnetic radiation is the combination of an electric field and magnetic field.

Hence, the flow of electric current by which the energy made available is called radiant.

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For a given sample of ch3oh , the enthalpy change during the reaction is 82.7 kj. The mass of the methane gas will be 32 gram.

When methanol will provide some temperature, then it will break into methane and oxygen gas and release some amount of energy.

The balanced chemical equation can be written as:

[tex]2CH_{3}OH[/tex]→ [tex]2CH_{4} + O_{2}[/tex], ΔH= 82 kJ

It can be seen that 2 mole of methane will produce 82 kj energy.

Hence, the energy of 82.3kj the count of mole could be = (2×82.3)/82

 = 2 moles

The mass will be equivalent to the = 2 × 16 = 32 g

Therefore, the mass of [tex]CH_{4}[/tex] produced will be 32g

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The volume of 0.250 m sulfuric acid necessary to react completely with 74.3 g sodium hydroxide is 3.7 L.

The chemical reaction of sulfuric acid and sodium hydroxide is given as below:

H2SO4 + 2NaOH ------- Na2SO4 + 2H2O

From above, we noticed that, one mole of sulfuric acid react with two moles of sulfuric acid.

Therefore, firstly we convert grams of sulfuric acid into moles.

As we know that, molar mass of sodium hydroxide is 40 g.

It is defined as the given mass to the molar mass of substance.

Mathematically,

Moles = Given mass / molar mass

Given mass of sulfuric acid = 74.3 g

By substituting all the values, we get

Moles = 74.3 / 40

= 1.85 mol

So, 1/2 moles of sulfuric acid one moles of sodium hydroxide.

Or, 1.85 moles of sodium hydroxide react with 1/2 × (1.85) moles of sulfuric acid.

1.85 moles of sodium hydroxide react with 0.925 moles of sulfuric acid.

Now,

Concentration of sulfuric acid = 0.250 M

Moles of sulfuric acid = 0.925 mol

C = m/ V

V = m/ C

= 0.925/ 0.250 = 3.7 L

Thus, we concluded that the volume of 0.250 m sulfuric acid necessary to react completely with 74.3 g sodium hydroxide is 3.7 L.

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When a piece of I2 in 50 ml of water is placed then another piece of I2  of the same mass in C6H14 is placed then hydrogen bonding is formed in water and a strong London dispersion force occurs.

C6H14 is a straight chain alkane with 6 carbon atoms with no double or triple bond.this is non polar. So, London dispersion forces exist.this is the force that exists between all molecule.this is the weakest intermolecular forces.the boiling point of C6H14 increases as their atomic mass increases due to stronger London dispersion force.

Water has strong intermolecular forces.in this,hydrogen bonding and dipole moment created by the strong electronegative oxygen and hydrogen.water has hydrogen bond,dipole induced dipole forces and London dispersion forces.

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The electron dot structure of diatomic nitrogen is N≡N.

The electron dot structure of the nitrogen molecule is attached

The atomic number = 7

Chemical symbol = N

Type of bond = Triple bond

Group = 5A

Total number of valance electrons = 5

Lewis structure:

Therefore the electron dot structure is N≡N.

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