1) List the following sets of quantum numbers in order increasing energy:

I . n=4, / = 1, m/=1, ms = +1/2

II. n=3, /=2, m/= -1, ms = +1/2
III. n=4, / =0, m/ = 0, ms = +1/2

Answer: The correct relationship of these elements regarding their ionization energy is Strontium < Calcium < Beryllium.

Explanation:

The amount of energy required to remove the most loosely bound electron in an atom is called ionization energy.

Larger is the size of an atom, more easily it can lose an electron. Since the size of atoms increases on moving down in a periodic table so ionization energy decreases down the group.

For example, beryllium, calcium, and strontium are elements of group 2. Strontium is the largest in size and beryllium is the smallest in size.

Hence, the ionization energy of group 2 elements in the increasing order is as follows.

Strontium < Calcium < Beryllium

Thus, we can conclude that the correct relationship of these elements regarding their ionization energy is Strontium < Calcium < Beryllium.

Answer:

European stability mechanism

a) Melting: An example of melting that occurs in our everyday life is when we heat butter on a stovetop.

b) Freezing: Freezing is the process in which a liquid transforms into a solid upon cooling.

c) Condensation: One example of condensation that we encounter regularly is when water droplets form on the surface of a cold drink on a hot day.

d) Evaporation: Evaporation is the process by which a liquid transforms into a gas or vapor.

e) Sublimation: Sublimation refers to the transformation of a substance directly from a solid to a gas without passing through the liquid state.

a) Melting:  Butter is a solid at room temperature, but when heat is applied, it melts into a liquid. This change is a result of the increase in temperature, which provides enough energy to overcome the intermolecular forces holding the butter molecules together.

b) Freezing:Eventually, the temperature reaches the freezing point of water (0°C or 32°F), at which the water molecules slow down and arrange themselves into a regular, crystalline structure. This transformation from a liquid to a solid state is accompanied by the release of heat energy.

c) Condensation: As the temperature decreases, the air's capacity to hold moisture decreases, causing the water vapor in the air to condense into liquid water droplets. This process occurs due to the transfer of heat energy from the warm air to the cold surface, leading to the saturation of the air and the conversion of water vapor into liquid form.

d) Evaporation:  As the sun's heat energy is absorbed by the water molecules on the clothes' surface, their kinetic energy increases, causing them to break free from the liquid phase and escape into the surrounding air as water vapor. This process occurs because the molecules at the liquid surface with sufficient energy can overcome the attractive forces within the liquid and enter the gas phase.

e) Sublimation: Sublimation refers to the transformation of a substance directly from a solid to a gas without passing through the liquid state. An example of sublimation is the process of dry ice (solid carbon dioxide) converting into carbon dioxide gas.

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Answer:

At higher altitudes, air pressure is lower. When atmospheric pressure is lower, such as at a higher altitude, it takes less energy to bring water to the boiling point. Less energy means less heat, which means water will boil at a lower temperature at a higher altitude.

In an ordinary container (exposed to atmospheric pressure). The freezing point will increase with altitude (and corresponding decrease in atmospheric pressure), but the difference is very slight.

Explanation:

When at a higher altitude , the atmospheric pressure is usually low and it

requires lesser amount of energy for the water to reach its boiling point. This

means that at higher altitudes , water boils at a lower temperature.

The freezing point of water increases with a higher altitude. This means that

water freezes at a higher temperature although the difference is very small.

The low pressure present in higher altitudes increases the melting point of

water(ice)

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D. Peridotite is probably closest in chemical composition to the upper mantle.

Peridotite, a coarse-grained, darkish-coloured, heavy, intrusive igneous rock that carries as a minimum 10 percentage olivine, different iron- and magnesia-wealthy minerals (normally pyroxenes), and now no longer greater than 10 percentage feldspar. Uses - as a supply of precious ores and minerals, inclusive of chromite, platinum, nickel and valuable garnet; diamonds are acquired from mica-wealthy peridotite (kimberlite) in South Africa. Peridotite is the overall call for the ultrabasic or ultramafic intrusive rocks, darkish inexperienced to black in color, dense and coarse-grained texture, frequently as layered igneous complex.

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Complete question-

_____________ is probably closest in chemical composition to the upper mantle.

A. Granite

B. Shale

C. Andesite

D. Peridotite

Ethanol has two carbons and six hydrogens.

Ethanol is a chemical compound with the molecular formula C2H6O. It consists of two carbon atoms (C), six hydrogen atoms (H), and one oxygen atom (O). To draw ethanol, we can represent the carbon atoms as C and the hydrogen atoms as H.

Using the line-bond or Lewis structure method, we can draw ethanol as follows:

    H    H

    |    |

H - C - C - O - H

    |    |

    H    H

Here, each line represents a bond. The carbon atoms are represented by the letter C, and the hydrogen atoms are represented by the letter H. The oxygen atom is shown as O.

Using the stick method, we can represent the ethanol molecule more clearly. In this method, the carbon atoms are shown as vertices, and the bonds are represented by lines connecting the vertices. The hydrogen atoms are not explicitly shown but are understood to be present.

H   H

|   |

C - C - O - H

|   |

H   H

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Standard International system is a system is used to measure physical properties.

The International System of Units (SI), is commonly known as the metric system. This system is used as the international standard for measurement. Most scientists use the International System of Units which is also known as the metric system in order to measure physical properties of elements. The metric system is a system of measurement that uses meter as base units of length (distance), liter for volume, and , and gram for weight or mass. We use units that are derived from the metric units in order to measure smaller or larger quantities.

So we can conclude that Standard International system is a system is used to measure physical properties.

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Answer:

Fiberglass is light, durable and strong

Explanation:

Explanation:

Fiberglass is light, durable and strong. It is impact resistant, corrosion resistant and has a moderate high strength to weight ratio. ... Because fiberglass is a low cost and highly flexible material it is used in various household products and industries

Considering the Boyle's law, the final pressure if the volume is changed to 4,577 ml is 575.158 torr.

Boyle's law states that the pressure of a gas in a closed container is inversely proportional to the volume of the container, when the temperature is constant: if the pressure increases, the volume decreases while if the pressure decreases, the volume increases.

Mathematically, Boyle's law states that the product of pressure times volume is constant:

P×V=k

where:

Being an initial state 1 and a final state 2, it is fulfilled:

P₁×V₁= P₂×V₂

where

In this case, you know:

Replacing in Boyle's law:

375 torr× 7020 mL= P₂× 4577 mL

Solving:

(375 torr× 7020 mL)÷ 4577 mL= P₂

575.158 torr= P₂

The final pressure is 575.158 torr.

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NMR signals may consist of a single peak, be split into several peaks, which is known as multiplicity.

The number of peaks of NMR and their relative intensities provide information about the chemical environment of the nuclei being observed. Multiplicity arises from spin-spin coupling between the observed nucleus and one or more neighboring nuclei. This coupling occurs because the magnetic field generated by the neighboring nuclei affects the local magnetic field experienced by the observed nucleus. The pattern of multiplicity can provide valuable information about the number and types of neighboring nuclei and the nature of the chemical bonds between them.

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Answer:

210 grams

Explanation:

just add them all up

Explanation:

All you have to do is use the mole cocept

Answer:

A. Distance = 18 m

    time = 2 hr

    speed = 9 m/hr

Explanation:

Speed is the same thing as velocity.

Velocity = distance/time

18m/2hr = 9m/hr

For choice B, the numbers are right, but the units are mixed (minutes were changed to hours)

Answer:

Groups

Explanation:

Elements with the same number of valence electrons are found in the same column(group) of the Periodic Table.

Answer:

Chemical property

Physical property

Chemical change

Physical change

Answer: Hello, There your Answer is Below.

A. Eugene was a little colder than Portland because Eugene is a little closer to the coast.

Explanation:

Hope this Helps you!!

Have a great day!!!

In this question, we have to find the maximum amount of grams that can be plated, and the informations we have are:

AgNO3

4.8 L of AgNO3 solution

3.4% of Ag by mass

density = 1.01g/mL

Using density and the volume of the solution, we can find the total mass of the solution, using the density formula:

d = m/v

d is going to be 1.01g/mL

m = ?

v = it will be 4800 mL, since we need mL and we have 4.8 L

Adding these values to the formula

1.01 = m/4800

m = 4848 grams

Now, since we have only 3.4% of Ag, we use the value in grams of the total solution to find the final mass of Ag

4848 g = 100%

x grams = 3.4%

x = 164.832 grams of Ag is the maximum amount.

The element with electronic configuration 2s1, which is lithium, has a violent reaction with cold water.

The most reactive metals in the periodic table are the alkali metals (Li, Na, K, Rb, Cs, and Fr); they all react with cold water violently or even explosively, displacing hydrogen. In the reduction of water to hydrogen gas (H2) and the metal ion hydroxide (OH), Group 1 Metal (M) is oxidised to its metal ions.

The second most reactive metals in the periodic table are the alkaline earth metals (Be, Mg, Ca, Sr, Ba, and Ra), which also exhibit increased reactivity in higher periods like the Group 1 metals. The only alkaline earth metal that does not react with water or steam, even when heated to a high temperature, is beryllium (Be).  Furthermore, beryllium has an exterior oxide layer that is robust, which reduces its reactivity at lower temperatures.

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0.198 grams of KOH are required to neutralize 14.7 mL of 0.12 M HCl stomach acid.

To find out how many grams of KOH are required to neutralize 14.7 mL of 0.12 M HCl stomach acid, we need to use the following formula:

Molarity × Volume = moles

To determine the grams of KOH required, we can use the following steps:

Step 1: Calculate the number of moles of HCl used

Molarity = (number of moles) / (volume in liters)

0.12 M = (number of moles) / (0.0147 L)

Number of moles of HCl used = 0.12 × 0.0147 = 0.001764 moles

Step 2: Determine the balanced chemical equation

\(2KOH + H_2SO_4\) ⇒ \(K_2SO_4 + 2H_2O\)

The stoichiometric ratio of HCl to KOH is 1:2 (based on the balanced chemical equation above).

Step 3: Determine the number of moles of KOH required

Number of moles of KOH required = 0.001764 moles

HCl × (2 moles KOH / 1 mole HCl) = 0.00353 moles KOH

Step 4: Calculate the grams of KOH required

Grams of KOH required = (number of moles KOH) × (molar mass of KOH)

Grams of KOH required = 0.00353 moles

KOH × 56.11 g/mol (molar mass of KOH) = 0.198 g KOH

Therefore, 0.198 grams of KOH are required to neutralize 14.7 mL of 0.12 M HCl stomach acid.

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Answer:

it's a precipitation reaction.

Explanation:

since a solid is produced, one of the elements are insoluble with one another–making a precipitate.

Answer: aint no way you really put positive but anywya um on the benefits side, fracking increases economic activity, employment, income and housing prices. But, it also brings more truck traffic, increases in crime and potential health impacts possibly due to air and/or water pollution.

use his but put it in your own words

Explanation: yes

1-I can be a little more specific- we do NOT have enough evidence that fracking, as most induced earthquakes are not directly caused by hydraulic fracturing. Even though fracking can release many harmful gases such as methane, it cannot cause seismic waves

2-Research reveals that fracking increases regulated contaminants found in drinking water, but not enough to trigger regulatory violations. However, fracking can affect our underwater stores, mostly through the harmful gases like methane that can contaminate the water and have negative effects on people who drink it.

3- Because fracking releases a massive amount of harmful gases, the community can experience negative effects such as toxic air and health issues. (You should probably support the con sides as there are little reasons fracking is good)

4-Fracking has negative effects on the atmosphere. In fact, there are very little pros about fracking. It release harmful gases into the air, which can further increase the intoxication the air has.

5-Oil and gas development is primarily regulated under multiple federal environmental and public health laws. These laws apply to drilling and hydraulic fracturing from unconventional sources. However, fracking, despite its limitations, still affects the environment.

The standard potential of a galvanic cell where x is the anode and y is the cathode can be determined using the equation E°cell = E°cathode - E°anode, where E°cell is the standard cell potential, E°cathode is the standard reduction potential of the cathode, and E°anode is the standard oxidation potential of the anode.

The standard potential is a measure of the tendency of the cell to produce a flow of electrons. A positive standard cell potential indicates that the cell will produce a flow of electrons from the anode to the cathode. The magnitude of the potential is dependent on the specific electrode materials and conditions of the cell.
The standard potential of a galvanic (voltaic) cell is determined by the difference in standard reduction potentials between the anode (X) and the cathode (Y). In this cell, X undergoes oxidation, losing electrons, while Y undergoes reduction, gaining electrons. The standard cell potential (E°cell) can be calculated using the formula:
E°cell = E°cathode - E°anode
Here, E°cathode is the standard reduction potential of Y and E°anode is the standard reduction potential of X. To find the values for X and Y, refer to the standard reduction potential table. A positive E°cell indicates a spontaneous reaction, while a negative value implies non-spontaneity.

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The intermolecular forces that contribute to creating a solution of CO2 in C6H6 are London Dispersion and Dipole-dipole forces.

CO2 and C6H6 are non-polar and polar molecules respectively, and therefore, the interaction between their molecules is mainly due to London Dispersion forces, which arise from the random movement of electrons in their molecules leading to temporary dipoles. Additionally, CO2 has a permanent dipole moment and can interact with the permanent dipoles of C6H6 through Dipole-dipole forces. Hydrogen bonding is not present in this solution, as CO2 is not capable of participating in hydrogen bonding due to its lack of hydrogen atoms with a lone pair of electrons.

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Answer:

1.)Elements

2.)Compound

3.)Subscript

4.)Formulas

Explanation:

Answer:

this is my other account btw and i just wanna thank you so much i don't want to fell this semester and now ima mark you brainliest thank you so so so much

Explanation:

Answer:

True

Explanation:

When it is poured onto skin, it preforms oxidation, releasing oxygen, which is a chemical change

Rubidium sulfide( Rb2S)

please mark as brainliest

The value of r is 0.0868 and the error percentage is 5.78%.

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The molal concentration of a solution can be defined as the amount of solute, in moles, dissolved in one kilogram of solvent.

Molal concentration is a measure of the concentration of a solute in a solution in relation to the amount of solvent. It is expressed as the number of moles of solute per kilogram of solvent. Unlike molar concentration, which is defined in terms of the volume of the solution, molal concentration considers the mass of the solvent, making it particularly useful for solutions where the volume may change with temperature or pressure.

In conclusion, molal concentration provides a standardized way to express the concentration of a solute in a solution by relating it to the mass of the solvent. This measurement is important in various fields such as chemistry and biology, as it allows for accurate calculations and comparisons of solution concentrations.

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Answer:

Sulphate ion

Explanation:

Zinc will undergoes oxidation. Zn2+ - - > Zn + 2e-

Copper will undergoes reduction. Cu2+ + 2e- - - > Cu