Convert 380 K to degrees F.​

Answer:

1s2 2s2 2p6 3s2 3p6 4s2 3d2

Explanation:

1s2 2s2 2p6 3s2 3p6 4s2 3d2

Answer:

Explanation:

A red blood cell placed in a solution of 90% water and 10% salt will experience osmosis. Osmosis is the diffusion of water across a semi-permeable membrane from an area of high water concentration to an area of low water concentration. The red blood cell's membrane is semi-permeable, which means that it allows small molecules like water to pass through, but not larger molecules like salt.

In this scenario, the red blood cell is placed in a solution that has a lower water concentration than the cell's internal environment. Therefore, water will move from inside the cell to the outside of the cell through the semi-permeable membrane, in an attempt to balance the concentration of water on both sides of the membrane.

As a result, the red blood cell will swell and eventually burst if the concentration difference is too high. This process is called hemolysis.

It's important to note that this is an oversimplified representation of a real-world scenario, as the red blood cells are not only affected by osmosis, but also by other factors such as the pH of the solution, the presence of other dissolved substances, and the mechanical forces acting on the cells.

Answer:

22 and 28 and 22

Explanation:

Brainliest please!

Answer:

22

28

22

Explanation:

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Answer:

Its changes over time.

Explanation:

I think because each ocean current has a different temperature.

Answer:

Thermohaline circulation. This is a process driven by density differences in water due to temperature (thermo) and salinity variations in different parts of the ocean. Currents driven by thermohaline circulation occur at both deep and shallow ocean levels and move much slower than tidal or surface currents.

Answer:

sulphur

Explanation:

Therefore the correct option is d. Sulphur atom has the weakest attraction for the electrons in a bond with an H atom.

Mass percentage is a term that represents the concentration, basically mass by mass percentage. It tells about the percentage of a component in a whole component. Thus, the mass percentage of water in given compound is 27.9%.

Mass percentage represents the the percentage of each element that is making a particular compound. Mass percentage does not have any unit as numerator and denominator contains the same unit.

Hydrated compound + Δ\(\rightarrow\) anhydrate compound +water

mass of hydrate compound =mass of anhydrate compound + mass of water

mass of hydrate compound=37.25 g

mass of anhydrate compound=26.81 g

37.25 g =26.81 g+ mass of water

mass of water=10.4g

Percentage of mass of water = (component’s mass ÷ total mass) x 100%

Percentage of mass of water = (10.4g ÷37.25 g) x 100%

                                                 =27.9%

Thus, the mass percentage of water in given compound is 27.9%.

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Introducing 0.25 mol of br2 and 0.25 mol of cl2 into a 3.0 l container at 400 k results in the 0.096 M of equilibrium concentration of BrCl

The reaction for the formation of BrCl from Br2 and Cl2 is:

Br2(g) + Cl2(g) ⇌ 2BrCl(g)

The equilibrium constant expression for the above reaction is:

Kc = ([\(BrCl^{2}\)]) / ([Br2][Cl2])

where [BrCl], [Br2], and [Cl2] are the equilibrium concentrations of the respective species in the reaction.

Since we have 0.25 mol of both Br2 and Cl2 in a 3.0 L container, the initial concentration of each is:

[Br2] = 0.25 mol / 3.0 L = 0.083 M

[Cl2] = 0.25 mol / 3.0 L = 0.083 M

At equilibrium, let's assume that the concentration of BrCl is x M. Therefore, the equilibrium concentration of Br2 and Cl2 will be (0.083 - x) M, since each mole of Br2 and Cl2 produces 2 moles of BrCl.

Kc = ([\(BrCl^{2}\)]) / ([Br2][Cl2])

At equilibrium, Kc will have a certain value at the given temperature. For this problem, let's assume Kc =2.0 x \(10^{-2}\) (which is an estimated value based on literature values at 400 K). Solving for x, we get:

2.0 x \(10^{-2}\) = \(x^{2}\) / [\((0.083 - x)^{2}\)]

x = 0.096 M

Therefore, the equilibrium concentration of BrCl is 0.096 M.

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Answer:

yo m ok mama

Explanation:

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Answer:

Electrophoresis could be inaccurate or unreliable

Explanation:

If the DNA samples were transferred to the wrong well of the gel plate, the results of the gel electrophoresis could be inaccurate or unreliable. This is because the position of the DNA samples on the gel is critical for accurate separation and analysis of the DNA fragments. If the DNA samples were transferred to the wrong well, they may not be properly separated or identified, which could lead to incorrect conclusions about the DNA samples. Additionally, if the samples were mislabeled, the researchers could misinterpret the results, which could also lead to incorrect conclusions about the DNA samples. Therefore, it is important to carefully label and transfer DNA samples to the correct wells on the gel plate to ensure accurate and reliable results.

note: ask to biology next time sir

ALLEN

The volume would be explanation times explanation because the explanation is the explanation

Explanation:

Answer:

\(\boxed {\boxed {\sf v=12 \ mL}}\)

Explanation:

Grace found the volume of the rock using water displacement.

To calculate the volume, we must subtract the initial volume from the final volume.

\(v_f-v_i\)

The initial or original volume is 20 milliliters.

The final or new volume, after the rock is added to the water, is 32 milliliters.

\(v_f=32 \ mL\\v_i=20\ mL\)

Substitute the values into the formula and subtract.

\(32 \ mL-20 \ mL\)

\(12 \ mL\)

The volume of the rock is 12 milliliters.

Nitrogen-fixers are the critical links between atmospheric nitrogen and organisms that need nitrogen to survive.

Nitrogen fixers are the compounds which are used in the nitrogen fixation process to convert the nitrogen molecule in other nitrogenous compounds.

So, the nitrogen fixers converts the atmospheric nitrogen molecule (N₂) into the other compounds like ammonia (NH₃) or any other useful nitrogenous compounds which will be used or absorbed by the soil or any other aquatic species. Some examples of nitrogen fixers are bacteria, clostridium, rhizobium, and many more.

Hence option (A) is correct i.e. atmospheric nitrogen and organisms that need nitrogen to survive.

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Answers:

Identify arrows pointing to bonding electrons.

✔ a, b, d

Identify arrows pointing to nonbonding electrons.

✔ c

Identify arrows pointing to structures containing sigma bonds.

✔ a, b, d

Identify arrows pointing to structures containing pi bonds.

✔ a

Explanation:

all the parts for those who need it!

these are all correct on edge! <3

Your question is incomplete. Please check below the full content

Identify arrows pointing to bonding electrons

a)✔a, b, d

b)✔ c

c)✔ a, c, b

d)✔ a

Identify arrows pointing to bonding electrons.

✔ a, b, d

The coordinate covalent bond is shown by an arrow with its head pointing towards the direction of the donation of an electron pair, as shown in Figure 2.

Here are 5 examples of covalent compounds

1 Hydrogen (H2) Hydrogen (H) is the simplest of all elements.

2 Oxygen (O2).

3 Nitrogen (N2).

4 Water (H2O).

5 Carbon Dioxide (CO2).

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Sulfate ions will move from left to right through the salt bridge. The salt bridge allows the passage of ions between solutions.

An electrochemical cell is a cell where electrical energy is produced as a result of chemical reactions.

We have to note that the anions tend to move from the cathode to the anode hence, sulfate ions will move from left to right through the salt bridge.

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The equilibrium of this reaction will shift to the left to favor the reverse reaction if the pressure is increased.

Balanced chemical equation

CH₄(g) + H₂O(g)  → CO(g) + 3H₂(g)

The principle suggests

The equilibrium will move to the side of the reaction where there are fewer moles of gas as pressure increases.

And the equilibrium will move toward the side of the reaction where there are more gas molecules when the pressure is reduced.

In the given chemical equation

The no. of moles of reactant = 2

The no of moles of the product = 4

Total moles of reactant is less than that of total moles of product

Therefore, If the pressure is increased the equilibrium of this reaction will shift to the left to favor the reverse reaction.

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Answer:

There are three types of periods in the modern periodic table: very short periods, short periods, and long periods.

The difference between very short periods and short periods is the number of elements they contain. Very short periods only contain two elements, while short periods contain eight elements. The difference between short periods and long periods is the number of orbitals that can be occupied by electrons in each period. Short periods can only have electrons in the s- and p-orbitals, while long periods can also have electrons in the d-orbital.

Here is a table summarizing the differences between very short periods, short periods, and long periods:

Answer:

the teacher said she would like me 50,000 to the class on Friday night so we will have a lot to discuss with the team to make fries for a little while watching a game and a few of them just like the other car I am going for the first day and the only way to go to the game was for a little more than one hour or so to see the game in a Regents way that is not the only reason you want it was the same

Answer:

Since 1982, STP is defined as a temperature of 273.15 K (0 °C, 32 °F) and an absolute pressure of exactly 105 Pa (100 kPa, 1 bar).

Explanation:

I hope I helped

Answer:

i belive its c

Explanation:

The main difference between an alkaline wave and a true acid wave lies in their pH levels and chemical compositions. An alkaline wave has a higher pH, typically around 9-11, and uses an alkaline chemical, such as ammonium thioglycolate, to break and reform the hair's disulfide bonds. In contrast, a true acid wave has a lower pH, typically around 4.5-7, and employs an acid-based chemical, like glyceryl monothioglycolate or cysteamine, to alter the hair's protein structure. These differences in pH and chemical composition determine the curling or straightening effects and the potential risks associated with each type of wave.

An alkaline wave, also known as a cold wave, has a higher pH compared to a true acid wave. It typically has a pH range of 9-11. Alkaline waves use an alkaline chemical, most commonly ammonium thioglycolate, to break the disulfide bonds in the hair's protein structure. The disulfide bonds are then reformed in the desired shape, resulting in the formation of curls or waves.

On the other hand, a true acid wave has a lower pH, usually ranging from 4.5-7. Acid waves use acid-based chemicals, such as glyceryl monothioglycolate or cysteamine, to alter the hair's protein structure. The acid chemicals work by softening the protein structure of the hair, allowing it to be reshaped into curls or waves.

The difference in pH and chemical composition between alkaline and acid waves affects their performance and potential risks. Alkaline waves tend to provide stronger curling effects but can be more damaging to the hair due to the higher pH and alkaline nature of the chemicals. Acid waves, with their lower pH, are generally considered milder and gentler on the hair, but they may not produce as strong or long-lasting curls as alkaline waves.

It's important to note that the choice between an alkaline wave and a true acid wave depends on various factors, including the desired outcome, hair type, and condition. Professional advice and proper application techniques are essential to achieve the desired results and minimize potential damage.

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C) Lacquer is the material made from the sap of a tree.

Lacquer is a material derived from the sap of the lacquer tree, scientifically known as Rhus vernicifera. The sap, commonly referred to as lacquer or resin, is harvested by making incisions in the bark of the tree. It is then collected and processed to create lacquer, which has been used for centuries in various cultures for decorative and protective purposes.

The sap of the lacquer tree undergoes a specific curing process that involves exposure to moisture and air. This process results in the formation of a durable and glossy finish. The lacquer can be applied to different surfaces, including wood, metal, or even paper, creating a smooth and shiny coating that enhances the appearance and provides protection against moisture and wear.

It is important to note that glaze, jade, and porcelain are not materials derived from the sap of a tree. Glaze refers to a glass-like coating applied to ceramics, while jade is a mineral used for carving and jewelry. Porcelain, on the other hand, is a type of ceramic material composed of clay, feldspar, and other minerals.

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In the compound Li2X, there are two lithium ions and one X^2- ion.

Ionic compounds are composed of an ion pair of opposite charge. Usually, the positive ion is a metal cation while the negative ion is a non metal anion. The two ions are held together by strong electrostatic interaction.

In the compound Li2X, there are two lithium ions and one X^2- ions. X^2 -is the  non metal anion present.

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Answer:8g mL^-1

Multiple 1mL * 40g/5mL

The change in enthalpy, or heat of vaporization, when 77.2 grams of steam at 100°C is converted to liquid water at the same temperature is approximately 40.7 kJ/mol.

This value represents the amount of energy that must be removed from the steam to condense it into liquid water at 100°C. It is important to note that this value may vary slightly depending on the exact pressure and other conditions of the system.

The change in enthalpy, also known as the enthalpy of vaporization, occurs when steam is converted to liquid water at the same temperature. For this process, 77.2 grams of steam at 100°C is converted to liquid water at 100°C.

To calculate the change in enthalpy, we can use the formula:

ΔH = m × ΔHvap

where ΔH is the change in enthalpy, m is the mass of the steam (77.2 grams), and ΔHvap is the enthalpy of vaporization of water (approximately 40.7 kJ/mol at 100°C).

First, we need to convert the mass of steam to moles using the molar mass of water (18.015 g/mol):

moles of steam = (77.2 g) / (18.015 g/mol) ≈ 4.29 moles

Now we can calculate the change in enthalpy:

ΔH = (4.29 moles) × (40.7 kJ/mol) ≈ 174.6 kJ

So, the change in enthalpy when 77.2 grams of steam at 100°C is converted to liquid water at the same temperature is approximately 174.6 kJ.

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In the reaction below, the one being oxidized is Iron (Fe) and the one being reduced is oxygen (O₂).

The oxidation and reduction in the given chemical reaction is:

4 Fe + 3 O₂ → 2 Fe₂O₃

Oxidation can be defined as the loss of electrons by a species. Here, oxygen is being reduced. It gains electrons and its oxidation number decreases from 0 to -2. Reduction can be defined as the gain of electrons by a species. Here, iron is being oxidized. It loses electrons and its oxidation number increases from 0 to +3.

Fe is being oxidized

O₂ is being reduced

Therefore, the correct answer is: Iron (Fe) is being oxidized and oxygen (O₂) is being reduced.

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We can verify the properties as follows;

1) Sour taste - Put some soda on your tongue

2) Corrode metals - Put a little soda on a clean metal surface

3) Effect on Litmus paper - Dip a blue litmus paper in soda

4) Electrolysis - Add two electrodes to soda and connect a battery.

Soda, specifically carbonated beverages like cola or soda pop, typically exhibits acidic properties. The acidity of soda is primarily due to the presence of carbonic acid (H₂CO₃), which forms when carbon dioxide gas (CO₂) dissolves in water.

When carbon dioxide is dissolved in water under high pressure, it forms carbonic acid through the following reaction:

CO₂ + H₂O ⇌ H₂CO₃

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Answer:

covalent network

Explanation:

trust me on this one

Answer:

C : Television

Explanation:

We should click on button from where the wire gets connected to the tv and operate. TV needs electric conductor for the flow of current .

Answer:

Boil so the water can evaporate

Explanation:

Answer: Crystallization/ evaporation.

This process collects the solute- in this case the salt crystals.

The salt is dissolved so we can't filter it, it won't be caught on filter paper. Instead we heat the water to evaporate it and then leave it, making the salt crystals form.

hope it helps.