which element has the following configuration: [xe]6s24f4[xe]6s24f4 ? enter the chemical symbol for the element.

Answer:

2.66 · 10⁵

Explanation:

There are 1440 minutes in a day. Which means that there is 266400 minutes in 185 days. And in scientific notation it is: 2.66 · 10⁵.

Answer:

20 drops

Explanation:

Answer

Explanation

The given balanced half-reaction for an acidic solution:

What to find:

Tha balanced half-reaction for a basic solution.

Step-by-step-solution:

To balance the half-reaction for a basic solution;

1. Add OH⁻ ions to BOTH SIDES to neutralize any H⁺

2. Combine H+ and OH- to make H2O.

3. Simplify by canceling out excess H2O

4. Balance the charges by adding e-

Answer:

C

Explanation:

took the test and got it correct

In a chemical reaction, reactants of the reaction are the substances that are used up in a reaction.

Chemical reactions are defined as reactions which occur when a substance combines with another substance to form a new substance.Alternatively, when a substance breaks down or decomposes to give new substances it is also considered to be a chemical reaction.

There are several characteristics of chemical reactions  like change in color, change in state , change in odor and change in composition . During chemical reaction there is also formation of precipitate an insoluble mass of substance or even evolution of gases.

There are three types of chemical reactions:

1) inorganic changes

2)organic changes

3) biochemical changes

During chemical reactions atoms are rearranged and changes are accompanied by an energy change as new substances are formed.

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Answer:

4:6    and  4:4

Explanation:

double the right side so double the left side to get these ratios

Answer:

b     first

Explanation:

first law of thermodynamics: energy can neither be created or destroyed; however, when heat is added to a system, energy can be changed from one form to another.

Answer:

This is the first law of thermodynamics.

Explanation:

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Answer:

Atomic Mass of Nitrogen is 14.01

Explanation:

The (\(CH_3CH_2CH_2CH_2COONa\)) and sodium carbonate (\(Na_2CO_3\)). The sodium pentanoate has a lower molecular mass than the sodium carbonate.

Sodium carbonate is a chemical compound with the formula Na2CO3. It is a sodium salt of carbonic acid and has a strong alkaline taste. It can be found naturally or produced synthetically, and is commonly used in a wide range of industrial and household applications. As a food additive, it is used to regulate acidity and as a preservative. Additionally, it is used in the production of glass, textiles, soaps and detergents, in water treatment, and as an ingredient in various cleaning products. Its natural form, known as natron, is found in mineral deposits and has been used since ancient times. Sodium carbonate is an important industrial chemical, used in a variety of industries for a variety of purposes.

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The rate constant k for the overall chemical reaction in terms of k_1, k_2 is Equal.

A chemical response is a system that results in the chemical transformation of one set of chemical materials to another. Classically, chemical reactions embody adjustments that best contain the positions of electrons inside the forming and breaking of chemical bonds between atoms, and not using an exchange to the nuclei (no change to the factors present), and can frequently be described by way of a chemical equation. Nuclear chemistry is a sub-area of chemistry that includes the chemical reactions of risky and radioactive factors in which each digital and nuclear change can arise.

The substance (or substances) to begin with worried in a chemical response are called reactants or reagents. Chemical reactions are commonly characterized by a chemical change, and they yield one or extra products, which usually have residences one of a kind from the reactants.

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Answer:

resend again that question dear

Answer:

its true i just looked on quizlet

Explanation:

Based on the book Pink and Say by Patricia Polacco, The detail from the story that best explains what the "Pink and Say" book is about is option B: "Then fever must have took me good, ‘cause I could feel a cool, sweet-smelling quilt next to my face.”

The protagonist, Sheldon Russell Curtis, regains consciousness after being shot and abandoned during the American Civil War and notices a pleasant quilt next to him, indicating that he had been tended to by someone.

After being saved by a youthful African American soldier called Pinkus Aylee, or "Pink," he is transported to Pink's mother's residence to recuperate. The narrative revolves around the unexpected bond that evolves between Pink and Sheldon, who both confront the harrowing experiences of warfare and the unfairness of enslavement.

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Answer:

carbon dioxide and oxygen

Explanation:

Answer:

This process produces methane and hydrogen

Explanation:

Answer:

The new moles of the gas in the flask is 2.13 moles.

Explanation:

Given;

number of moles of gas, n = 1.9 mol

temperature of the gas, T = 21 °C  = 21 + 273 = 294 K

pressure of gas, P = 697 mmHg

volume of gas, V = ?

Apply ideal gas law;

PV = nRT

Where;

R is gas constant, = 62.363 mmHg.L / mol. K

V = nRT / P

V = (1.9 x 62.363 x 294) / 697

V = 49.98 L

New pressure of the gas, P = 795 mmHg

New temperature of the gas, T = 26 °C = 273 + 26 = 299 K

New moles of the gas, n = ?

Volume of the gas is constant because volume of the flask is the same when more gas was added.

n = PV / RT

n = (795 x 49.98) / (62.363 x 299)

n = 2.13 moles

Therefore, the new moles of the gas in the flask is 2.13 moles.

This idea has historical significance. The ancient Greek philosopher Democritus (born 460 BCE), who held that everything is composed of small particles moving in empty space, is credited with developing the first hypothesis we have about the microscopic universe. He had some concrete proof for this, such the fact that items like a new loaf of bread or a rose may give off a scent even when they are far from the source. Being a materialist, he thought that these odors originated from actual material particles released by the bread or the rose, rather than being purely a type of magic. He reasoned that these particles must float through the air, with some of them maybe landing in your nose where you can smell them immediately. This still makes sense in modern times. But many of us now have quite different perspectives on these "particles."

Thank you,

Eddie

The d-orbital starts in the third energy level (n = 3) of an atom.

Each energy level can contain one or more sublevels, including s, p, d, and f sublevels. The first energy level (n = 1) has one s orbital and can hold a maximum of 2 electrons. The second energy level (n = 2) has one s orbital and three p orbitals, allowing for a maximum of 8 electrons. The third energy level (n = 3) has one s orbital, three p orbitals, and five d orbitals, accommodating a maximum of 18 electrons.

The d-orbitals are found in the third energy level, corresponding to the third period of the periodic table. Therefore, the period number for the energy level where the d-orbital starts is 3.

The filling order of orbitals follows the pattern: 1s, 2s, 2p, 3s, 3p, 4s, 3d, and so on. The d-orbitals start filling after the p-orbitals in the third energy level. The electron configuration for the third energy level is written as 3s^2 3p^6 3d^1-10, depending on the element.

For example, the electron configuration of iron (Fe) is 1s^2 2s^2 2p^6 3s^2 3p^6 3d^6 4s^2. This configuration indicates that the d-orbitals of iron are half-filled with 5 electrons.

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Answer:

I think it's the last one I'm sorry if it's wrong

Explanation:

it sounds like it fits

Answer:

The best conductor is Copper

Explanation:

because it's able to generate more heat than the other 2

The compound with the most nucleophilic conjugate base in diethyl ether with a different nucleophile than NaI would be option D. HF (pKa = 3.2).

To determine which compound would have the most nucleophilic conjugate base in diethyl ether with a different nucleophile than NaI, we need to consider the stability of the conjugate bases. The stability of a conjugate base can be inferred from the acidity of the corresponding compound.

The acidity of a compound is determined by the stability of its conjugate base. The more stable the conjugate base, the weaker the acid. Therefore, the compound with the highest pKa value will have the most stable conjugate base and, consequently, the least nucleophilic conjugate base.

In this case, option D. HF (pKa = 3.2) has the lowest pKa value, indicating that it is the strongest acid and has the least stable conjugate base. Therefore, the conjugate base of HF would be the most nucleophilic among the given compounds.

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Answer:

Calcium and magnesium sulphide react to form calcium sulphide and magnesium metal.

Explanation:

Ca + MgS → CaS + Mg

The reaction between calcium and magnesium sulfide produces calcium sulfide and magnesium metal. The balanced equation can be given as Ca + MgS → CaS + Mg.

An equation for just a chemical reaction is said to be balanced if both the reactants as well as the products have the same number of atoms and total charge for each component of the reaction. In other words, both side of the reaction have an equal balance of mass and charge.

Conservation of charge as well as mass, equation and reaction balance, etc. The components and outcomes of a chemical reaction are listed in an imbalanced chemical equation, but the amounts necessary to meet the conservation of mass are not specified. The reaction between calcium and magnesium sulfide produces calcium sulfide and magnesium metal. The balanced equation can be given as Ca + MgS → CaS + Mg.

Therefore, the balanced equation can be given as Ca + MgS → CaS + Mg.

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Answer:

B. Is the correct answer :) i hope this helps!!

Explanation:

brainliest please?

Answer:

Of course the answer is gold

Explanation:

Gold is used for making jewellery and not aluminium,iron or copper

Answer:

copper or gold.

Explanation:

Copper is also a good material for accessories. Even in the ancient times, those who can’t afford gold jewelry wear copper jewelry instead. It offers design flexibility too due to its high ductility.

Reagents that can be used to convert 1-pentyne into 1-bromopentane is HBr (1 equiv.), ROOR.

The reaction of 1-pentyne with HBr (hydrogen bromide) in the presence of a radical initiator such as ROOR (e.g., benzoyl peroxide) will produce 1-bromopentane.

This is a radical addition reaction where the H-Br bond is cleaved homolytically to form Br radical, which attacks the alkyne to form a more stable radical.

The radical then combines with another H-Br molecule to form the product 1-bromopentane.

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Answer:

ok all you need is a little study

Explanation:

organic chemistry isn't something to worry about is something that is a very simple concept if you understand what you're doing so a little bit of studying will help you go through it and you really don't this is not the topics that you will really understand if you just go through it as once so there is no need to worry about organic chemistry it is very simple concept just learning you are a you are close just learn all those simple aspects alkane etc it's very easy

Answer:

if the colliding objects have unequal mass, they will have unequal accelerations as a result of the contact force that results during the collision.

Answer:

The cell is in a Hypotonic solution. When a cell is in a Hypotonic solution the lower osmotic pressure causing water to move across the pressure gradient into the solution causing the cell to shrivel.

The outer electron configuration of a main-group element is ns^2 np^4. Therefore, the most likely charge for an ion of this element would be -2.

Explanation

When determining the valence electrons in an atom, outer electron configuration comes into play. Valence electrons are the electrons located in the outermost shell. As a result, it's the most likely to be involved in chemical bonding, which is a crucial aspect of chemistry.

In this case, the main-group element has an outer electron configuration of ns²np⁴. Therefore, its valence electron is six (6).

The six (6) valence electrons suggest that the element belongs to the 16th group (also known as Group VI A) of the periodic table. Elements in this group include oxygen (O), sulfur (S), selenium (Se), and tellurium (Te), among others.

When these elements form ions, they tend to gain two additional electrons to achieve a stable noble gas electron configuration. This is because the elements in Group 16 have six valence electrons, and by gaining two electrons, they complete their outermost energy level, which resembles the electron configuration of the noble gas in the previous period.

Therefore, the most likely charge for an ion of this element would be -2. By gaining two electrons, the element's electron configuration would become ns^2 np^6, which matches the electron configuration of the noble gas that precedes it in the periodic table.

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The formula when converting g/mL to mg/L is to multiply the mass / volume value by 1e+6

When we do this we come up with 1,730,000

This however, should be written as either 1.73⋅10^5 or 1.73E+5.