If 0. 40 mol of h2 and 0. 15 mol of o2 were to react as completely as possible to produce h2o, what mass of reactant would remain?.

The mililiters of 0.085 m NaOH are required to titrate the following solution to the equivalence point:

The point at which chemically equal amounts of reactants have been combined is known as the equivalence point, also known as the stoichiometric point, in a chemical process. The equivalence point for an acid-base reaction is the point at which, in accordance with the chemical reaction, equal amounts of acid and base would neutralise one another. Simply that the ratio is the same as in the chemical reaction is all that is implied, not necessarily a 1:1 molar ratio of acid to base. It can be located using an indicator, such as methyl orange or phenolphthalein.

The equivalence point is reached when moles of acid equals moles of base.

(a).  HNO₃ + NaOH = NaNO₃ + H₂O

moles of acid (HNO₃) = 40.0 ml x 1 L / 1000 m x 0.900 mol / L = 0.036 mols

volume of base (NaOH) needed = 0.036 mols HNO₃ x 1 mol NaOH/mol HNO₃ x 1 L / 0.0850 mol = 0.4235 L

volume of base (NaOH) = 424 mL (3 sig. figs.)

(b).  HC₂H₃O₂ + NaOH ==> NaC₂H₃O₂ + H₂O

moles of acid (HC₂H₃O₂) = 35.0 ml x 1 L / 1000 ml x 0.0850 mol / L = 0.002975 mols

moles of base (NaOH) needed = 0.002975 mol acid x 1 mol NaOH / mol acid = 0.002975 mols NaOH

volume of NaOH = 0.002975 mols x 1 L / 0.0850 mol = 0.0350 L = 35.0 mL.

Learn more about Equivalence point:

https://brainly.com/question/30592456

#SPJ4

The value of Ksp for AgIO₃ at the given temperature is

[tex]1.44 × 10⁻⁸[/tex]

To fill in the ICE table, we first need to understand the reaction and the given information. The given information tells us that 0.0980 g of AgIO₃ dissolves in 2.00 L of aqueous solution at a certain temperature. From this, we can determine the molar solubility of AgIO₃, which is the amount of AgIO₃ that dissolves per liter of solution.

To calculate the molar solubility, we need to convert grams of AgIO₃ to moles and divide by the volume of the solution in liters:

[tex]0.0980 g AgIO₃ × (1 mol AgIO₃/405.81 g AgIO₃) ÷ 2.00 L solution[/tex]

= 0.000120 M

This is the initial concentration of Ag⁺ and IO₃⁻ ions, since AgIO₃ dissociates into these ions when it dissolves in water. The initial concentration of AgIO₃ can be calculated from the molar solubility using the stoichiometry of the reaction:

[tex]AgIO₃(s) ⇌ Ag⁺(aq) + IO₃⁻(aq)[/tex]

Initial: 0.000120 M 0.000120 M 0.000120 M

We have the initial concentrations of all species, we can use the equilibrium expression for the dissolution of AgIO₃ to calculate the value of Ksp:

[tex]Ksp = [Ag⁺][IO₃⁻] [/tex]

= (0.000120 M)(0.000120 M)

[tex]= 1.44 × 10⁻⁸[/tex]

Learn more about stoichiometry here:

https://brainly.com/question/30218216

#SPJ4

The steps necessary to determine the hybridization of the central atom are:

1. Draw the Lewis structure of the molecule.
2. Predict the geometry of the molecule using the VSEPR model.
3. Deduce the hybridization of the central atom based on the geometry of the molecule.

Therefore, the correct options are:
- Draw the Lewis structure of the molecule.
- Predict the geometry of the molecule using the VSEPR model.
- Deduce the hybridization of the central atom based on the geometry of the molecule.
To determine the hybridization of the central atom in a molecule, follow these necessary steps:

1. Draw the Lewis structure of the molecule: This will help you identify the central atom and visualize the arrangement of other atoms around it.
2. Predict the geometry of the molecule using the VSEPR model: The VSEPR model (Valence Shell Electron Pair Repulsion) helps predict the molecular geometry based on the number of electron pairs surrounding the central atom.
3. Deduce the hybridization of the central atom based on the geometry of the molecule: With the predicted geometry, you can determine the hybridization of the central atom by identifying the number of electron domains (bonding and non-bonding electron pairs) around it.

You do not need to draw all contributing resonance structures of the molecule to determine the hybridization of the central atom, as this step is not directly related to hybridization.

To know more about  hybridization visit:

brainly.com/question/14140731

#SPJ11

The standard enthalpy of formation of SO₃(g) is -49.5 kJ/mol.

The heat change caused by a chemical reaction at constant volume or constant pressure is referred to as enthalpy change. The enthalpy change indicates how much heat was absorbed or evolved during the reaction. It is represented by the letter ΔH.

We can use Hess's Law to calculate the standard enthalpy of formation (ΔfH°) of SO₃(g) using the given information:

ΔfH°[2SO₂(g)] + ΔfH°[O₂(g)] → ΔfH°[2SO₃(g)]

Since ΔrH° = -198 kJ for the reaction 2SO₂(g) + O₂(g) → 2SO₃(g), we know that:

ΔfH°[2SO₂(g)] + ΔfH°[O₂(g)] = -198 kJ/mol

Using the given values, we can find the enthalpies of formation of SO₂(g) and O₂(g):

ΔfH°[SO₂(g)] = -297 kJ/mol

ΔfH°[O₂(g)] = 0 kJ/mol (by definition)

Substituting these values into the equation above, we can solve for ΔfH°[2SO₃(g)]:

ΔfH°[2SO₃(g)] = ΔfH°[2SO₂(g)] + ΔfH°[O₂(g)] - ΔrH°

ΔfH°[2SO₃(g)] = (-297 kJ/mol) + (0 kJ/mol) - (-198 kJ/mol)

ΔfH°[2SO₃(g)] = -99 kJ/mol

Finally, we can divide by 2 to get the standard enthalpy of formation of SO₃(g):

ΔfH°[SO₃(g)] = ΔfH°[2SO₃(g)] / 2

ΔfH°[SO₃(g)] = (-99 kJ/mol) / 2

ΔfH°[SO₃(g)] = -49.5 kJ/mol

Therefore, the standard enthalpy of formation of SO₃(g) is -49.5 kJ/mol.

Learn more about enthalpy change on:

brainly.com/question/28175255

#SPJ4

Nickel has an atomic number of 28, meaning it has 28 protons and 28 electrons. Its electron configuration is [tex][Ar]3d^84s^2[/tex].

Electron configuration is the arrangement of electrons in an atom. It is a key part of understanding how atoms interact with each other and how they form chemical bonds. The electron configuration of an atom is determined by the number of protons in the nucleus. Each element has a unique electron configuration, and elements with similar configurations tend to form similar compounds. Electron configuration helps to explain many of the chemical and physical properties of an element, including its reactivity, solubility, and melting point. It also helps explain why some elements form ionic bonds, while others form covalent bonds. The electron configuration of each element is written using the periodic table and follows a set of rules known as the "Aufbau Principle."

The element with this electron configuration is Nickel (Ni), which is a transition metal located in the fourth period (row) and in the fourth group (column) of the periodic table. Nickel has an atomic number of 28, meaning it has 28 protons and 28 electrons. Its electron configuration is [tex][Ar]3d^84s^2[/tex].

To learn more about electron configuration
https://brainly.com/question/5306808
#SPJ4

The end (final) value of n in a hydrogen atom transition if the electron starts in n = 2 is 3 .

We know that frequency , v = c / λ

c = speed of light = 3x 10 ⁸ m/s

λ = wave length = ?

v = Frequency = 4.57 x 10¹⁴ Hz

Plug the values we get λ = c / v

                                 = 6.564 x 10⁻⁷ m

Also From Rydberg Equation , 1/ λ = R[ (1/ni²) – (1 / nf²) ]

     R = Rydberg's constant = 10.96 x10⁶ m⁻¹

              λ = wavelength = 6.564x10⁻⁷ m

              ni = 2

              nf = ?

Plug the values we get [(1 /ni² ) – (1 / nf²)] = 1 / (λ R) = 0.139

           [(1/2²) – (1/nf²)] = 0.139

                 (1/nf²) = 0.111

                      nf²=9

                       nf = 3

Atoms and molecules undergo electronic transitions when they absorb or emit electromagnetic radiation, typically ultraviolet or visible. Planck's equation, E = h, says that the energy change caused by an electron transition is related to the frequency of the electromagnetic wave.

An electron change is the point at which an electron moves starting with one energy level then onto the next. An electron either gains or loses energy during a transition. Photons are produced by the electron when it loses energy.

Learn more about transition of atom:

brainly.com/question/31643061

#SPJ4

The least extent of dissociation occurs with [tex]H_3PO_4 + H_2O \rightarrow H_3O^+ + H_2PO_4-[/tex]

Dissociation is a psychological process that involves disconnecting from reality. It is a coping mechanism used to separate oneself from traumatic or stressful situations. During dissociation, a person may feel disconnected from their body, have difficulty concentrating, and experience amnesia regarding the event. Dissociation can manifest in a variety of forms, such as depersonalization, derealization, and dissociative identity disorder.

The least extent of dissociation occurs with [tex]H_3PO_4[/tex] because it has the strongest intramolecular bonding, which makes it more difficult for it to be broken apart into its ions in water.

Therefore the correct option is D.

To learn more about dissociation

https://brainly.com/question/30445997

#SPJ4

D The cell would not operate because a current could not be conducted between the half-cells.

Cell is the basic structural and functional unit of life. It is a complex, microscopic structure comprised of a variety of components and organelles that work together to perform vital biological functions. Cells can be single-celled organisms such as bacteria and protozoa, or they can be part of a multicellular organism such as a human. Cells are responsible for controlling and carrying out all of the processes necessary for life to exist, including metabolism, energy production, growth and development, and reproduction. Cells can come in various shapes and sizes and can be divided into two broad categories, prokaryotic and eukaryotic. Prokaryotic cells are found in bacteria and have no nucleus, while eukaryotic cells have a nucleus and are found in animals, plants, and fungi.

This is because salt bridges are used to provide a path for ions to move between the two compartments of the cell, and without them, the ions cannot move and thus no current can be conducted through the circuit.

Therefore the correct option is D.

To learn more about cell

https://brainly.com/question/26122239

#SPJ4

The gas with the highest rms speed at 200°C is H2O (choice B).

What is root-mean-square speed.?

The root-mean-square (rms) speed of gas molecules is a measure of the average speed of the molecules in a gas sample. It is defined as the square root of the mean of the squares of the velocities of individual gas molecules in the sample, where the velocity is the speed and direction of a molecule.

Mathematically, the formula for rms speed is:

rms speed = √(3RT/M)

According to the kinetic-molecular theory, the root-mean-square (rms) speed of gas molecules is directly proportional to the square root of the temperature and inversely proportional to the square root of the molar mass. Therefore, lighter molecules will have higher rms speeds than heavier molecules at the same temperature.

The formula for rms speed is:

rms speed = √(3RT/M)

where R is the gas constant, T is the temperature in Kelvin, and M is the molar mass of the gas.

At 200°C, the temperature in Kelvin is 200 + 273.15 = 473.15 K.

Comparing the molar masses of the gases given, we see that H2O has the lowest molar mass, followed by HCl, Cl2, and SF6, which has the highest molar mass.

Using the above formula, we can calculate the rms speeds of the gases at 200°C:

For H2O: rms speed = √(3RT/M) = √(3 x 8.314 x 473.15 / 18.015) = 603.2 m/s

For HCl: rms speed = √(3RT/M) = √(3 x 8.314 x 473.15 / 36.461) = 468.5 m/s

For Cl2: rms speed = √(3RT/M) = √(3 x 8.314 x 473.15 / 70.906) = 376.4 m/s

For SF6: rms speed = √(3RT/M) = √(3 x 8.314 x 473.15 / 146.06) = 259.8 m/s

Therefore, the gas with the highest rms speed at 200°C is H2O (choice B).

To know more about root-mean-square speed. visit:

https://brainly.com/question/31609540

#SPJ4

As the water bath is warming, the space at the top of the graduated cylinder is decreasing. This change is occurring because the warming water is causing the air in the cylinder to expand, which in turn is pushing out any excess air and taking up more space. This is known as thermal expansion and is a common phenomenon observed in many materials when they are heated. The graduated cylinder, being made of glass, also undergoes thermal expansion, but to a lesser extent than the air inside it. This results in a decrease in the space at the top of the cylinder as the warming water and expanding air occupy more of it.
Hi! As the water bath is warming, the space at the top of the graduated cylinder is decreasing. This change is occurring because the temperature increase causes the molecules in the liquid inside the cylinder to move faster and expand. As a result, the liquid occupies more volume, reducing the space at the top of the graduated cylinder. This phenomenon is due to thermal expansion, which is the tendency of matter to change its volume in response to a change in temperature.

To know more about graduated cylinder visit

https://brainly.com/question/26173436

#SPJ11

The dentist patient inhaled 2.5 moles of N2O.we can use the ideal gas law which relates the number of moles of a gas to its pressure, volume, and temperature.

The ideal gas law is given by:
PV = nRT
Where P is the pressure of the gas, V is the volume of the gas, n is the number of moles of the gas, R is the gas constant, and T is the temperature of the gas.
At STP (Standard Temperature and Pressure), the pressure of the gas is 1 atm and the temperature is 273 K.
So, we can rearrange the ideal gas law to solve for n:
n = PV/RT
The volume of the gas inhaled is 60.5 L, the pressure is 1 atm, the gas constant R is 0.08206 L·atm/mol·K, and the temperature is 273 K.

n = (1 atm) x (60.5 L) / (0.08206 L·atm/mol·K x 273 K)
n = 2.5 mol
Therefore, the dentist patient inhaled 2.5 moles of N2O.

To learn more about moles, click here:
https://brainly.com/question/31597231

#SPJ11

A hydroxyl group want an electrophilic aromatic substitution to occur at the ortho and para positions .

Define electrophile substitution reaction

In electrophilic aromatic substitution reactions, which are organic processes, an atom attached to an aromatic ring is substituted by an electrophile. Typically, an electrophile replaces a hydrogen atom from a benzene ring in these processes.

The hydroxyl group is the most powerful ortho para directing group because it is an electron-releasing group that, through resonance, increases the electron density in the benzene ring and encourages the ring to undergo electrophilic substitution. Therefore, OH is among the most effective ortho para directing groups.

To learn more about electrophile substitution reaction  use:

https://brainly.com/question/14803468

#SPJ4

The elements C, N, O, and F all belong to the same family of elements known as the 'Group VA' elements, which all have four electrons in their outermost shell (valence shell).

A shell is a command-line interpreter or shell that provides a traditional user interface for the operating system services. It is an environment in which users can type commands to perform certain tasks, such as file management, running applications, and system administration. The shell allows users to interact with the operating system by entering commands, and it provides a set of tools for automating system administration tasks. It also provides a programming language for writing custom scripts and programs.

This shell is the most important for chemical bonding, as it is the shell that is closest to the nucleus of the atom and therefore has the strongest influence on the atom's reactivity. As all these elements need to complete their valence shell with 8 electrons for stability, they must all obtain an octet (8 electrons) in order to achieve a stable electron configuration.

To learn more about shell

https://brainly.com/question/28765634

#SPJ4

A local FM radio station broadcasts at a frequency of 96.0 MHz. Calculate the energy of the frequency at which it is broadcasting.

Energy =  6.36 x 10⁻²⁹ kJ/photon.

The energy that a single photon carries is known as photon energy. Energy is inversely correlated with wavelength because it is directly proportional to the electromagnetic frequency of the photon. The energy of a photon increases with its frequency. In other words, the energy of a photon decreases with increasing wavelength.

Any energy unit can be used to express photon energy. The joule (as well as its multiples, such as the microjoule) and the electronvolt (eV) are two of the units frequently used to indicate photon energy. The bigger units may be more helpful for describing the energy of photons with greater frequency and higher energy, such as gamma rays, as opposed to lower energy photons such in the optical spectrum, because one joule equals 6.24 1018 eV.

Given that frequency = 96 MHz = 96 MHz * 106 s-1 / MHz = 9.6 * 107 s-1

We know that energy per photon (E) = hv where h is Planck's constant and v is frequency,

E = 6.626 x 10⁻³⁴ x 9.6 x 10⁷ = 6.36 x 10⁻²⁶ J

= 6.36 x 10⁻²⁹ KJ/photon (as 1 J = 10⁻³ KJ)

Learn more about Energy of Frequency:

https://brainly.com/question/29867670

#SPJ4

The element with an odd number of valence electrons and the least electronegative element with 7 valence electrons is chlorine (Cl).

Chlorine is a nonmetal in group 17 of the periodic table, also known as halogens. It has 7 valence electrons, meaning it requires only one more electron to complete its octet and achieve a stable electron configuration. Chlorine is less electronegative than other halogens such as fluorine and oxygen, making it more likely to lose an electron in a chemical reaction. Chlorine is commonly used in disinfectants, bleach, and as a component in PVC plastics.

Learn more about valence electrons here:

https://brainly.com/question/28977387

#SPJ11

The pH of a saturated solution of calcium hydroxide is approximately 12.50. Therefore, option (E) "12.07" is the closest answer.

Calcium hydroxide is a strong base and a saturated solution of calcium hydroxide has a pH of around 12.5 at room temperature. This pH value is slightly less than that of a 0.1 M solution of sodium hydroxide, which has a pH of 13.0.

The pH of a solution is a measure of its acidity or basicity and is defined as the negative logarithm of the concentration of hydrogen ions (H+) in the solution. A pH of 7 is considered neutral, while values below 7 indicate acidity and values above 7 indicate basicity.

In the case of a saturated solution of calcium hydroxide, the high concentration of hydroxide ions (OH-) produced by the strong base leads to a basic solution with a pH above 7.

To know more about ions

brainly.com/question/30663970

#SPJ11

In problem 9, we have the reaction between 1-butene and hydrogen gas in the presence of a palladium catalyst. This reaction can proceed via either a kinetically controlled or thermodynamically controlled pathway.

In the thermodynamically controlled pathway, the more stable product is formed. In this case, the thermodynamic product is 2-butene.

The formation of 2-butene involves the formation of a pi bond between the carbons that were originally connected to the double bond in 1-butene. The hydrogen atom adds to the carbon that was originally connected to the more substituted carbon in 1-butene, resulting in the formation of a secondary carbocation intermediate.

This intermediate then undergoes a 1,2-shift of the alkyl group to form a tertiary carbocation intermediate. The pi bond then forms between the carbons that were originally connected to the double bond in 1-butene, resulting in the formation of 2-butene.

The thermodynamic product is favored over the kinetic product because it is more stable. The double bond in 2-butene is in a more substituted position, resulting in a lower overall energy state. Therefore, the formation of 2-butene is favored over the formation of 1-butene.

To know more about palladium catalyst refer here:

https://brainly.com/question/20865838#

#SPJ11

If the concentration of a weak acid and its conjugate base are increased from 0.1 M and 0.05 M, respectively, to 0.2 Mand 0.1 M, the solution's buffer capacity will increase .

Concentration is the process of focusing on a specific thing or activity. It involves paying close attention to a particular task, task-related object, or thought, while actively ignoring distractions or other thoughts. It is an essential life skill that allows us to effectively process information and become more productive. Concentration can be used in many aspects of life, such as studying for exams, working on a project, or completing a task. It can also help to reduce stress and improve mental clarity. Concentration is a skill that can be developed by practicing proper focus and concentration techniques. These techniques can include visualization, mindfulness, and relaxation exercises. Additionally, creating a distraction-free environment, setting goals, and taking breaks can help improve concentration.

To learn more about concentration

https://brainly.com/question/23437000

#SPJ4

In general, precise measurements of nuclide mass and particle mass are important in determining the products and yields of nuclear reactions. By knowing the masses of the reactants and products involved, it is possible to calculate the energy released or absorbed during the reaction, as well as the probability of the reaction occurring.

Additionally, precise measurements can help to identify different isotopes and their properties, which is important in many fields including nuclear medicine and energy production.

Nuclear reactions are collisions between two atomic nuclei or one atomic nucleus and a subatomic particle that generate one or more nuclides. The nuclides formed by nuclear reactions differ from the responding nuclei (also known as the parent nuclei).

To know more about Nuclear reaction visit:

https://brainly.com/question/16526663

#SPJ11

Recrystallization is a process used to purify solid compounds by dissolving them in a suitable solvent, allowing the impurities to remain undissolved and filtering the pure crystals. When choosing a solvent for recrystallization, several factors must be considered.

The solvent should have a high solubility for the compound to be purified at high temperatures, and a low solubility at room temperature. It should also be volatile and easily removed from the crystals during the drying process. Additionally, the solvent should not react with the compound being purified or with the filter paper used in the filtration process.

Lab techniques involved in recrystallization include heating the solvent to dissolve the compound, cooling the solution to allow crystals to form, and filtering the crystals to separate them from the solvent and any remaining impurities.

The solvent can be selected based on the properties of the compound to be purified, and a small-scale test can be performed to determine the effectiveness of the solvent. Recrystallization is an important technique in organic chemistry for obtaining high-purity compounds.

you know more about Recrystallization pls visit-

https://brainly.com/question/29215760

#SPJ11

Alcohols are formed via anti-Markovnikov addition of water to alkenes, with the hydroxyl group attaching to the less substituted carbon.

The hydroboration oxidation sequence is a method for the formation of alcohols, and the resulting alcohol is always formed with anti-Markovnikov selectivity, meaning that the hydrogen atom is added to the less substituted carbon atom and the boron atom is added to the more substituted carbon atom.

This reaction sequence is typically carried out using borane as the hydroborating agent and hydrogen peroxide or sodium peroxide as the oxidizing agent. Overall, the hydroboration oxidation sequence is an efficient and selective method for the preparation of alcohols.
To know more about alcohol visit:

https://brainly.com/question/29268872

#SPJ11

The correct interpretations of the symbol n715 are:

- The element contains 7 protons in its nucleus.
- The element contains 8 neutrons in its nucleus.

These interpretations can be obtained by breaking down the symbol n715. The letter "n" stands for the word "neutron", which tells us that the isotope has 8 neutrons. The number "7" represents the atomic number of the element, which tells us that it has 7 protons in its nucleus. However, the symbol does not give us any information about the number of electrons in the element, so the option "the element has 15 electrons" is not correct.
The symbol n715 represents a particular isotope of an element. Based on this symbol, we can interpret the following information:

1. The element contains 7 protons in its nucleus. The number before the element symbol (n) represents the number of protons, which is also the atomic number of the element.

2. The atomic number of the element is 15. This interpretation is incorrect. The atomic number is 7, as mentioned in the previous point.

3. The element contains 8 neutrons in its nucleus. The number after the element symbol (15) represents the mass number, which is the sum of protons and neutrons. So, the number of neutrons can be calculated as: 15 (mass number) - 7 (protons) = 8 neutrons.

4. The element has 15 electrons. This interpretation is incorrect. In a neutral atom, the number of electrons is equal to the number of protons, which is 7 in this case.

So, the correct interpretations are: the element contains 7 protons in its nucleus, and the element contains 8 neutrons in its nucleus.

To know more about isotope visit:

brainly.com/question/11680817

#SPJ11

(a) The salt present in this sea water is primarily in the form of NaCl. While NaCl is very non-volatile and only boils at temperatures over 1700 K, water boils at 373.15 K.

Ethanol is an organic compound that is commonly referred to as ethyl alcohol or grain alcohol. It is a colorless, flammable liquid with a characteristic odor and taste. Ethanol is the active ingredient in alcoholic beverages and is also used in fuel, solvents, and preservatives. It is produced through the fermentation of starches and sugars by yeasts or synthetic processes. Ethanol has a variety of uses, including in the production of pharmaceuticals, cosmetics, and other industrial products.

Simple distillation can be used to separate the components because their boiling points differ by such a large margin.
(b) Only fractional distillation may be used to separate benzene and toluene, which both boil at temperatures in the same range.

(c) Fractional distillation is used to isolate petrol from crude oil. Crude oil is a mixture of numerous volatile organic chemicals, including naphtha (boiling range: 70–200 °C), petrol (boiling range: 100–150 °C), kerosene (boiling range: 200–300 °C), etc. Since their boiling points are in close proximity to one another, simple distillation cannot be used to separate them.
(d) Because the components boil at distinct temperatures that are noticeably different, these can be separated by straightforward distillation.

To learn more about ethanol

https://brainly.com/question/20814130

#SPJ4

Complete Question:

When a cylinder is cut vertically through the center, the resulting cross section is a circle.

There are a few solids that can have vertical cross sections that are circles. One example is a cylinder, which is a three-dimensional shape with circular bases and straight sides. . Another example is a cone, which has a circular base that tapers to a point at the top. When a cone is cut vertically through the center, the resulting cross section is also a circle. Other solids, such as cubes or rectangular prisms, cannot have vertical cross sections that are circles because their bases are not circular.

Therefore, only solids with circular bases, such as cylinders and cones, can have vertical cross sections that are circles.

A solid that can have vertical cross sections that are circles is a cylinder. When you slice a cylinder vertically along its height, parallel to its base, you will obtain circular cross sections. The cylinder's bases are also circles, and its vertical height remains the same throughout the entire solid.

To know more about circle visit:

brainly.com/question/29142813

#SPJ11

In lab organic solvent done add sodium wire and benzophenone to a volume of THF that has been pre-dried over calcium hydride or 4A molecular sieves.

Heat for several hours at reflux or under nitrogen until the solvent turns a deep blue color. This demonstrates the dissolvable is dry, and you can distil off the volume you require.

Last hints of water are eliminated by treating the natural arrangement with a drying specialist. A drying specialist is an inorganic salt which promptly takes up water to become hydrated. A few such salts are utilized regularly in the natural science educating labs: Agent for drying

The solution splits into three phases when an organic solvent and ammonium sulfate are added to a protein solution. Both the upper organic phase and the lower aqueous phase contain proteins that, depending on the concentration of ammonium sulfate, precipitate out and form an intermediate layer.

Learn more about Organic solvent :

brainly.com/question/9630611

#SPJ4

Periodic glacial advances have been a natural phenomenon for thousands of years. Scientists have studied various factors that could cause these advances, and one of the commonly believed causes is variations in Earth's orbit and tilt.

The Earth's orbit and tilt go through cyclical changes over thousands of years, which can affect the amount of sunlight and heat that reaches the polar regions. When the tilt of the Earth's axis is at a certain angle, the polar regions receive less sunlight, leading to colder temperatures and more snowfall. This can lead to the growth of glaciers, which can advance over time and cover vast areas.
Another factor that could contribute to periodic glacial advances is changes in ocean currents and temperatures. The oceans play a crucial role in regulating Earth's climate, and fluctuations in ocean currents can affect the distribution of heat and moisture around the planet. This can lead to changes in weather patterns and precipitation, which could contribute to the growth and advancement of glaciers.
Other factors that could influence periodic glacial advances include volcanic activity, variations in atmospheric carbon dioxide levels, and fluctuations in solar radiation. While scientists continue to study these factors, it is clear that periodic glacial advances are a natural part of Earth's climate history, and they will continue to occur in the future.

To know more about periodic visit :

https://brainly.com/question/13058420

#SPJ11

The length of this radio wave is approximately 3.2 meters. So, the correct answer is option (C) 3.2 m.

The speed of light in a vacuum is approximately 3.00 x 10^8 m/s. The relationship between the frequency of a wave (f) and its wavelength (λ) is given by:

c = fλ

where c is the speed of light. Solving for the wavelength, we get:

λ = c/f

Substituting the given values, we get:

λ = (3.00 x 10^8 m/s)/(93.3 x 10^6 Hz)

λ = 3.22 meters

For more question on radio wave click on

https://brainly.com/question/29690463

#SPJ11

Cl- , Br- pair of ions is arranged so that the ion with the smaller charge density is listed first because charge density decreases with increase in atomic radii.

B is the correct answer.

The periodic table shows that the ionic size of a group of elements grows from top to bottom. As long as you are comparing all metals or all nonmetals across a time, the ionic size falls from left to right. The ionic size between metals and nonmetals grows as you move from cations to anions.

Charge density is a measure of how concentrated charges are at a certain location. In terms of charge per length, linear charge density is used. Volume charge density is a measure of charge per volume, whereas surface charge density is a measure of charge per area. Charge densities are constant in the presence of homogenous charge distributions.

The charge density is the proportion of electric charge to surface area or volume in a body or field. We can determine how much charge is held in a certain field by looking at its charge density. The volume, area, or length of a charge can be used to calculate its density.

Learn more about charge density:

https://brainly.com/question/12968377

#SPJ4

Scandium has atomic number of 21. The number of electrons in a neutral atom is the same as an element's atomic number.The electronic configuration of Scandium should be 1 s² 2 s² 2 p⁶ 3 s² 3 p⁶ 4 s² 3 d¹ .

Electronic  configuration: An atom's electronic configuration is the fundamental principle by which electrons are arranged into its orbitals.

The electron arrangement of a component depicts how electrons are circulated in its nuclear orbitals. Atomic electron configurations follow a standard notation in which all electron-containing atomic subshells are arranged in a particular order, with the number of electrons they hold written in superscript.

Learn more about electronic configuration:

brainly.com/question/28329307

#SPJ4

Answer: H2SE

Explanation: H2SE is a polar molecule because the H-Se bond is polar due to the difference in electron negativity between H & SE atoms.

However, the molecule has a bent shape, and the dipole moments of the two H-Se bonds do not cancel each other out. Therefore, H2SE Has a permanent dipole moment,and  it can experience dipole-dipole attraction.