What event occurs when the
tension built up along Earth's
plates is released causing one
plate to slip past another?

If you use the molecular orbital theory, option C, which is the paramagnetism of oxygen particles, you can explain the odd thing that Lewis structures can't explain.

The fact that oxygen particles are paramagnetic doesn't make sense in terms of Lewis structure. Since oxygen atoms have two electrons that don't have a partner, only molecular orbital theory can explain why oxygen particles are paramagnets. A Lewis structure is a much better way to show how the electrons in a particle's valence shell are arranged. It is used to show how the electrons around the different atoms in a particle are arranged. Electrons are shown as "dabs" or as a line running between two particles. In his cubical particle hypothesis, Lewis came up with the "octet rule." The octet rule is based on the fact that iotas tend to like having eight electrons in their valence shell. When molecules have fewer than eight electrons, they usually react by making more stable mixtures. Atoms will act to get into the most stable state possible.

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Answer: MgAl2O4 or Spinel (gemstone)

Explanation:

Answer:

one

Explanation:

im sure its one

Only 1 time, Moon rotate on its axis during a lunar month. Therefore, the correct option is option A among all the given options.

Nearly everything around us is in motion in a rotating direction. The movement of the cricket ball, celestial bodies, the majority of the enjoyable activities in amusement parks, every machine, washing machines, etc. Rotational motion is displayed by objects that revolve around an axis.

While not all of the body's constituent parts move in the same way, all of the body's constituent parts move in the same direction. By necessity, it becomes crucial that we investigate how the various rigid body particles move as the body is rotated. Only 1 time, Moon rotate on its axis during a lunar month.

Therefore, the correct option is option A.

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Answer:

Mass = 17.8 g

Explanation:

Given data:

Number of atoms of Ca = 2.68 × 10²³

Mass in gram = ?

Solution:

Avogadro number:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ atoms

2.68 × 10²³ atoms × 1 mole  /6.022 × 10²³ atoms

0.445 mol

Mass in gram;

Mass = number of moles ×  molar mass

Mass = 0.445 mol  ×  40 g/mol

Mass = 17.8 g

The most stable contributor's structure is the genuine structure of the resonance hybrid. The delocalization of electrons is what stabilizes the resonance hybrid. The potential resonance forms are quickly interconverted by a resonance hybrid.

Equivalent resonance types equally contribute to the hybrid's overall structure. Consider the resonance hybrid structure of a carboxylate group as an example. Different resonance contributors do not always contribute equally to the hybrid structure until they are equivalent to one another in terms of stability, as is the case for the carboxylate group, which has equivalent contributions from A and B as shown in the given figure. One resonance structure will more closely resemble the “actual” (hybrid) structure than another if it is more stable (lower in energy) than the other.

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Charcoal is the sample of this drawing medium have been dated back to 30,000 BCE and is denoted as option B.

This is referred to a black carbon residue which is heated in insufficient oxygen to give it a light weight.

It is used for drawing and has been in existence for as long as 30,000 BCE hence the reason why it is the most appropriate choice.

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The longest wavelength light capable of ionizing a hydrogen atom in the n=7 state is approximately 913.4 nanometers.

To determine the longest wavelength of light capable of ionizing a hydrogen atom in the n=7 state, we need to consider the energy levels of hydrogen atoms and the ionization process.

In hydrogen atoms, electrons occupy different energy levels or shells, labeled by the principal quantum number (n). The energy of an electron in a specific energy level is inversely proportional to the square of the principal quantum number. This means that higher energy levels have lower binding energies.

The ionization of a hydrogen atom occurs when an electron is completely removed from the atom, breaking the electrostatic attraction between the electron and the proton in the nucleus. Ionization requires supplying enough energy to overcome the binding energy of the electron.

The energy required to ionize a hydrogen atom in the n=7 state is equal to the energy difference between the n=7 energy level and the ionization energy level, which corresponds to the electron being completely removed from the atom.

The ionization energy of hydrogen is approximately 13.6 eV (electron volts). Using the energy equation E = hc/λ, where E is the energy of a photon, h is Planck's constant, c is the speed of light, and λ is the wavelength of light, we can calculate the wavelength of the longest wavelength light capable of ionizing the hydrogen atom.

First, we convert the ionization energy from electron volts to joules:

1 eV =\(1.602 \times 10^{-19\) J

Ionization energy = 13.6 eV × 1.602 ×\(10^{-19\) J/eV = 2.179 × 10^-18 J

Next, we rearrange the energy equation to solve for wavelength:

λ = hc/E

Plugging in the known values:

λ = (6.626 × 10^-34 J·s × 3.00 × \(10^8\) m/s) / (2.179 × \(10^{-18\) J)

Calculating this equation yields:

λ ≈ 913.4 nm

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Can be recovered 496.7 kilograms of iron from 639 kilograms of the ore FeO.

To find the mass of Fe in the ore FeO, we need to calculate the number of moles of the ore.

\( n_{FeO} = \frac{m_{FeO}}{M_{FeO}} \)

Where:

\( m_{FeO}\): is the mass of FeO = 639 kg = 639000 g

\( M_{FeO}\): is the molar mass of FeO = 71.844 g/mol

The number of moles of FeO is:

\( n_{FeO} = \frac{m_{FeO}}{M_{FeO}} = \frac{639000 g}{71.844 g/mol} = 8894.3 \:moles \)

Now, in 1 mol of FeO we have 1 mol of Fe, so the number of moles of Fe is:

\( n_{Fe} = n_{FeO} = 8894.3 \:moles \)

Then, the mass of Fe is:

\( m_{Fe} = n_{Fe}*A_{Fe} = 8894.3 \:moles*55.84 g/mol = 496657.7 g = 496.7 kg \)

Therefore, 496.7 kilograms of iron can be recovered.

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They involve a full or partial transfer of electrons from one reactant to another and Oxidation and reduction must both occur in the same reaction, are true. The correct answer is e.

Oxidation-reduction reactions, also known as redox reactions, involve the transfer of electrons between reactants.

In these reactions, one reactant is oxidized, which involves the loss of electrons, while another reactant is reduced, involving the gain of electrons. This electron transfer can be either partial or complete.

It is important to note that oxidation and reduction must occur simultaneously in the same reaction. This means that if one reactant is being oxidized, another reactant must be simultaneously reduced.

This conservation of electrons ensures that the overall charge remains balanced. Oxygen does not necessarily have to be involved in redox reactions.

While many redox reactions do involve oxygen, it is not a requirement. Redox reactions can occur with other elements or compounds, not necessarily involving oxygen.

Oxidation-reduction reactions involve the transfer of electrons and require oxidation and reduction to occur in the same reaction, but the involvement of oxygen is not a mandatory condition. The correct answer is e.

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Answer:

Look at the screenshot below.

Those are your answers!

Good Luck.

Explanation:

The number of valence electrons for neutral atoms is the same as the number of the atom's main group.A periodic table element's column can be used to determine its main group number.For instance, carbon, which belongs to group 4, has four valence electrons.

Use the periodic table to identify the number of valence electrons available for bonding for each of the following elements?

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Answer:

The direction of prevailing winds determines which type of air mass generally moves over an area. For illustration, a west wind might bring warm wettish air from over an ocean. An east wind might bring cold dry air from over a mountain range. Which wind prevails has a big effect on the climate

Prevailing winds are the result of atmospheric rotation cells. They impact the climate of a region.

Rising and sinking air can impact the rush of a region.

Atmospheric rotation cells produce the general climate of a region.

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Answer:

C6H12O6 + 6O2 - 6CO2 + 6H2O + ENERGY

Explanation:

Let me know if I'm right

Answer:

A. Ra, Ag, Ge, Br

Explanation:

Electronegativity by increasing order:

Radium (0.89) - Silver (1.93)- Germanium (2.01)- Bromine (2.96)

Answer:

Iron 55 (Fe-55) is the iron isotope whose nucleus consists of 26 protons and 29 neutrons. It is a radioisotope that disintegrates by electron capture in manganese 55.

Explanation:

i hope this helps if not tell me

Answer:

Sublimation

Condensation

Boiling, or vaporization

A total of 40 ml of titrant was required to reach a pOH of 9.00.  

6.25× 10⁻¹³ is the Kb of the conjugate base to the weak acid.

The identification of the weak acid is the first step in solving this issue. Given that the pOH is 9.00, we may get the pH as follows:

pH + pOH = 14.00

pH = 14.00 - 9.00 = 5.00

We may formulate the dissociation reaction as follows because we know that the weak acid must partially dissociate because the solution is acidic:

A- + H₃O+ = HA + H₂O

where A- is the conjugate base of the weak acid, denoted by the symbol HA.

According to the equation for the weak acid's dissociation, [A-] = [NaOH added] = 0.004 mol/L.

The weak acid's conjugate base is A-, and the following equation relates its Kb (base dissociation constant) to Ka:

Kw = Ka * Kb

where Kw (1.0 ×10⁻¹⁴ at 25°C) is the water ion product constant. Calculating Kb:

Kw = Kb = 1.0 ×10⁻¹⁴/ 0.016 = 6.25× 10⁻¹³

Therefore, 6.25× 10⁻¹³ is the Kb of the conjugate base to the weak acid.

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Answer:

Net force: 110 N

Resulting Force: 24.7289837 pounds-force

Explanation:

First you would add 30+60+20N which would be 110N

110N would equal to the 24.72898937 pounds of force.

The RK of methyl orange is 3.5, as it changes color from red to yellow at a pH of 3, and has its most intense color (yellow) at pH 6.

Methyl is an organic compound with a formula of CH3, which is a single carbon atom bonded to three hydrogen atoms. It is a type of hydrocarbon and is the simplest of all alkyl compounds. Methyl is a versatile molecule that can be found in a variety of compounds, including pharmaceuticals, solvents, fragrances, and food additives. It is also used in the production of plastics, rubber, dyes, and other synthetic materials. Additionally, methyl is a key component of natural gas, oil, and coal, and can also be produced from biomass. In the body, methyl is used for a variety of biological processes, such as the metabolism of proteins, carbohydrates, and fats.

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Answer:

o232

Explanation:

The Ca2+ concentration in a groundwater that is in equilibrium with calcite and has a PCO2 of 10-2.5 (atm) is 1.6 × 10-3 M.

The equilibrium expression for the dissolution of calcite (CaCO3) in water, assuming that CO2 is the only acidic gas present, is : CaCO3(s) + H2O + CO2(g) ↔ Ca2+(aq) + 2HCO3-(aq)

The equation for the relationship between the PCO2 of a gas and the concentration of dissolved CO2 in a solution in equilibrium with the gas is as follows : PCO2 = K(H2CO3) × [H2CO3] where,

K(H2CO3) is the Henry's law constant for CO2

H2CO3 is the concentration of dissolved CO2 in equilibrium with the gas.

We can estimate the concentration of H2CO3 as follows :

H2CO3 = α(CO2) × PCO2 where α(CO2) is the solubility coefficient of CO2 in water, which is a function of temperature, pressure, and salinity.

To solve the problem, we need to know the values of the following constants :

K(H2CO3) at 25 °C is 1.20 × 10-3 atm/(mol/L).

α(CO2) at 25 °C is 3.37 × 10-2 mol/L/atm.

Substitute the values into the equation :

PCO2 = K(H2CO3) × [H2CO3]10-2.5 atm = (1.20 × 10-3 atm/(mol/L)) × [H2CO3]

H2CO3 = (10-2.5 atm) / (1.20 × 10-3 atm/(mol/L)) = 8.33 × 10-3 M

Substitute the value of H2CO3 into the equilibrium expression and solve for the concentration of Ca2+ :

Ksp = [Ca2+][HCO3-]2 = 4.86 × 10-9

Ksp = [Ca2+][HCO3-]2[Ca2+] = Ksp / [HCO3-]2[Ca2+] = (4.86 × 10-9) / (8.33 × 10-3)2 = 1.6 × 10-3 M

Therefore, the Ca2+ concentration in a groundwater that is in equilibrium with calcite and has a PCO2 of 10-2.5 (atm) is 1.6 × 10-3 M.

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The concentration of 9.1 parts per million of sodium in the solution is equal to 395.8 μM (molarity).  

A ppm (parts per million) and M (molarity) are units of concentration. To convert ppm to μM we need to remember that:

\( 1 ppm = \frac{mg}{L} \)

\( 1 M = \frac{mol}{L} \)

Molar mass Na = 22.990 g/mol

Now, we can convert ppm to M as follows:

\([Na^{+}] = 9.1 \frac{mg}{L}*\frac{1 g}{1000 mg}*\frac{1 mol}{22.990 g}*\frac{10^{6} \mu mol}{1 mol} = 395.8 \mu mol/L\)          

Therefore, the concentration of sodium in the solution is 395.8 μmol/L.

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The process of weathering by dissolution is most effective on rocks that are composed of minerals that are soluble in water. Dissolution is a process that involves the dissolving of a mineral or rock in water, which then leads to the breakdown of the rock structure.

Limestone and other sedimentary rocks that contain calcium carbonate are most susceptible to weathering by dissolution. This is because calcium carbonate dissolves easily in water and is therefore quickly eroded by water. Other rocks such as halite, gypsum, and sylvite are also soluble in water and therefore are susceptible to weathering by dissolution. Weathering by dissolution is most effective in areas with high rainfall and high humidity, as these conditions provide the necessary moisture for the dissolution process to occur. The rate of weathering by dissolution also depends on the acidity of the water, with more acidic water causing faster dissolution.

Overall, the process of weathering by dissolution is most effective on rocks that are composed of minerals that are soluble in water, especially in areas with high rainfall and high humidity.

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Answer:

mass = 24000 grams. find the volume first by multiplying the length width and height..then you can finish the problem

There are approximately 1.387 moles in 25 grams of water (1) and 134.46 grams in 4.5 moles of Li₂O (2).

1. To calculate the number of moles, we need to divide the given mass of water by the molar mass of water, which is approximately 18.015 g/mol.

Number of moles = 25 grams / 18.015 g/mol

≈ 1.387 moles

Therefore, there are approximately 1.387 moles in 25 grams of water.

2. To calculate the mass in grams, we need to multiply the number of moles by the molar mass of Li₂O, which is approximately 29.88 g/mol.

Mass in grams = 4.5 moles x 29.88 g/mol

≈ 134.46 grams

Therefore, there are approximately 134.46 grams in 4.5 moles of Li₂O.

3. To determine the number of molecules in 23 moles of oxygen, we can use Avogadro's number, which states that there are 6.022 x 10²³ molecules in one mole of any substance. Therefore, for 23 moles of oxygen, we can calculate:

Number of molecules = 23 moles x 6.022 x 10²³ molecules/mole

= 1.38646 x 10²⁵ molecules

So, there are approximately 1.38646 x 10²⁵ molecules in 23 moles of oxygen.

4. To determine the number of moles in 3.4 x 10²³ molecules of H₂SO₄, we can use Avogadro's number. Since one mole contains 6.022 x 10²³ molecules, we can calculate:

Number of moles = (3.4 x 10²³ molecules) / (6.022 x 10²³ molecules/mole)

= 0.564 moles

So, there are approximately 0.564 moles in 3.4 x 10²³ molecules of H₂SO₄.

5. To determine the number of molecules in 25 grams of NH₃, we need to convert grams to moles using the molar mass of NH₃. The molar mass of NH₃ is 17.03 g/mol.

Number of moles = 25 grams / 17.03 g/mol

≈ 1.468 moles

Using Avogadro's number, we can calculate the number of molecules:

Number of molecules = (1.468 moles) x (6.022 x 10²³ molecules/mole)

= 8.831 x 10²³ molecules

So, there are approximately 8.831 x 10²³ molecules in 25 grams of NH₃.

The complete question is:

Answer the following questions:

1) How many moles are in 25 grams of water?

2) How many grams are in 4.5 moles of Li₂O?

3) How many molecules are in 23 moles of oxygen?

4) How many moles are in 3.4 x 10²³ molecules of H₂SO₄?

5) How many molecules are in 25 grams of NH₃ ?

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Answer:

I think is c

Explanation:

I hope this helps you

Answer:

Acid solutions and base solutions

Explanation:

Answer:

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\\)

From the question

mass = 10 g

volume = 2 cm³

We have

\(density = \frac{10}{5} \\ \)

We have the final answer as

Hope this helps you

only eukaryotes can perform cellular respiration. More specifically, the two types of organisms that can do this are autotrophs and heterotrophs.

Examples of heterotrophs: animals, fungi, the majority of bacteria, ...

Examples of autotrophs: grass, algae, a few bacteria, ...