do you guys know what these are? im stuck

Answer:

b : they move to the positive electrode

Explanation:

they lose electrons to form chlorine atoms. The atoms join up in pairs to form Cl² molecules , so chlorine gas is formed at the positive electrode

Surfactants are effective at disrupting cell membranes and dissolving insoluble substances because surfactants are amphiphilic in nature.What are surfactants Surfactants are chemical compounds that have hydrophilic (water-loving) and lipophilic (oil-loving) properties.

They are used in detergents, personal care products, and many other applications. Surfactants are effective at disrupting cell membranes and dissolving insoluble substances because surfactants are amphiphilic in nature. Amphiphilic compounds are those that have both hydrophilic and lipophilic properties and are therefore attracted to both water and oil. Surfactants are effective at disrupting cell membranes and dissolving insoluble substances because they are amphiphilic in nature, meaning they have both hydrophilic and lipophilic properties that make them attracted to both water and oil. This allows them to penetrate the cell membrane and interact with the hydrophobic fatty acid tails, causing the membrane to become disrupted.

Surfactants are also effective at dissolving insoluble substances because they can surround and solubilize these substances, allowing them to be washed away or removed.ExplanationSurfactants are compounds that reduce surface tension in liquids by altering the interfacial properties of the liquid. This happens when a surfactant molecule comes into contact with a liquid, such as water. The hydrophobic tail of the surfactant molecule is attracted to the surface of the liquid, while the hydrophilic head is attracted to the water molecules.Surfactants are effective at disrupting cell membranes because the hydrophobic tail of the molecule can penetrate the hydrophobic region of the membrane, while the hydrophilic head interacts with the hydrophilic regions of the membrane. This disrupts the structure of the membrane, allowing molecules to pass through more easily.

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Answer:

1.08 x 10²⁵molecules

Explanation:

From the mole concept we know that ;

      1 mole of any substance contains 6.02 x 10²³ molecules

This number is the Avogadro's number.

 So;

  18 mole of CH will contain:

       Number of molecules of CH  = 18 x 6.02 x 10²³ = 1.08 x 10²⁵molecules

The number of molecules is therefore 1.08 x 10²⁵molecules

The molarity of the perchloric acid solution is 7.75 M if 15.5 ml of base are needed to neutralise 13.6 ml of acid.

To determine the molarity of the perchloric acid, we can use the balanced chemical equation for the reaction between perchloric acid (HClO4) and barium hydroxide (Ba(OH)2):

2 HClO4 + Ba(OH)2 → Ba(ClO4)2 + 2 H2O

From the equation, we can see that 2 moles of perchloric acid react with 1 mole of barium hydroxide. Therefore, the mole ratio between the two substances is 2:1.

Given:

Volume of barium hydroxide solution (base) = 15.5 mL

Volume of perchloric acid solution (acid) = 13.6 mL

Molarity of barium hydroxide solution = 0.136 M

Determine the moles of barium hydroxide (base):

Moles of Ba(OH)2 = Molarity of Ba(OH)2 × Volume of Ba(OH)2 solution

= 0.136 M × 15.5 mL

= 2.108 mol

Use the mole ratio to find the moles of perchloric acid (acid):

Moles of HClO4 = (1/2) × Moles of Ba(OH)2

= (1/2) × 2.108 mol

= 1.054 mol

Calculate the molarity of perchloric acid (acid):

Molarity of HClO4 = Moles  / Volume of HClO4 solution

= 1.054 mol / (13.6 mL × 1 L/1000 mL)

= 7.75 M.

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Answer:

Q 1: Why did the man get sick but not his children? Why did he use a cube?

Q 2: By knowing how he heated the water and everything we can infer what happened to him and not his children.

Explanation:

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Answer:

Ill just comment this for fun So he can get brainliest since u need 2 comments for that

A. In this pair, H3O+ is the stronger acid because it can donate a proton more easily than HCN.
B. H2SO4 is the stronger acid in this pair because it is a strong acid, while HCN is a weak acid.
C. HS? is the stronger acid in this pair because it has a greater positive charge on the sulfur atom, making it more acidic than H2S.

The stronger acid in each pair.

A. Between HCN and H3O+, the stronger acid is H3O+. H3O+ is a stronger acid due to its higher ability to donate a proton.

B. Between H2SO4 and HCN, the stronger acid is H2SO4. H2SO4 is a stronger acid because it has a higher degree of ionization and can donate more protons than HCN.

C. Between HS- and H2S, the stronger acid is H2S. H2S is a stronger acid because it more readily donates a proton compared to HS-.

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When the reaction is subjected to pressure, the equilibrium will shift to the side with fewer gas molecules, which is the left side. Therefore, the answer is c. left.

According to Le Chatelier's principle, when a system at equilibrium is subjected to a change in pressure, it will respond by shifting in a way that reduces the effect of the change. In this case, increasing the pressure would cause the equilibrium to shift towards the side with fewer gas molecules to alleviate the increase in pressure.

Since there are fewer gas molecules on the left side of the reaction (2 CO + O2), the equilibrium will shift to the left to reduce the total number of gas molecules. This means that the concentrations of CO and O2 will increase, while the concentration of CO2 will decrease until a new equilibrium is established. Thus, the equilibrium will shift to the left.

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Answer:

Explanation:

Here, we want to check if the equation of the reaction is balanced or not

Now, for a balanced equation of reaction, the number of atoms of the individual elements on both sides of the equation is equal

Now, let us check the atoms:

We have 1 Sr on both sides

We have 1 SO4 on both sides

We have 1 Mg on both sides

We have 2 OH on both sides

From what we can see, the equation of the reaction is balanced

Thus, the correct answer choice is B

Answer:

The presence of a brightly colored, detachable tail can be advantageous for some lizards because it serves as a distraction or decoy for predators. When a predator attacks, the lizard can quickly detach its tail, which wriggles and continues to move for a short period of time. This sudden movement can divert the predator's attention away from the lizard's body, allowing the lizard to escape.

The bright coloration of the tail can also help to draw the predator's attention towards it, instead of the lizard's body. Bright colors are often used in the animal kingdom as warning signals, indicating that an animal is toxic or dangerous. While the lizard may not necessarily be toxic or dangerous, the bright colors of its tail can create a similar effect, deterring predators from attacking in the first place.

Additionally, the detachable tail can serve as a form of self-defense, allowing the lizard to escape from a predator's grasp. By detaching its tail, the lizard can leave the predator with a distraction while it makes its escape. Over time, the lizard can regrow its tail, allowing it to continue to use this defense mechanism in the future.

The volume of the carbon monoxide sample at -19°C and 359 torr is approximately 14.84 L.

To find the volume of carbon monoxide at -19°C and 359 torr, given that it occupies 8.15 L at 283.0 K and 725 torr, we'll use the combined gas law formula:
V2 = (V1 * P1 * T2) / (P2 * T1)
where V1 and V2 are the initial and final volumes,
P1 and P2 are the initial and final pressures, and
T1 and T2 are the initial and final temperatures in Kelvin, respectively.

First, we need to convert -19°C to Kelvin:
T2 = -19 + 273.15 = 254.15 K

Now, plug the given values into the formula:
V2 = (8.15 L * 725 torr * 254.15 K) / (359 torr * 283.0 K)
V2 = (1,507,489.65625) / (101,597)
V2 ≈ 14.84 L

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The states of matter are solids, liquids, and gases.

Basically, there are three states of matter. The matters are stated according to the arrangement of the particles.

The solid is tightly packed and the liquids are not rigid and have more movements in particles. Whereas the gas spreads around and the particles are very flexible.

The best example is when ice(solid) is heated it converts into water (liquid) and if water is boiled it converts into steam (gas).

The kinetic energy in accordance to states of matters are as follows:

(The kinetic energy is obtained from the motion of the object)

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Among electromagnetic waves, UV rays are most dangerous because exposure to these radiation cause serious problems in living organism. The wavelength of wave is 6.9x 10⁻⁸m.

Electromagnetic wave is a wave which contain two component one is electric component and other is magnetic component. The electric and magnetic component are perpendicular to each other. There are so many wave that comes under electromagnetic wave like infrared wave , radio wave, light wave.

There is a relation between frequency of wave, and wavelength of wave

Mathematically,

ν=c÷λ

where,

ν=frequency of light=4.34 x 10¹⁵s⁻¹

c is speed of light that is 3×10⁸m/s

λ is the wavelength of light=?

Substituting all the values

4.34 x 10¹⁵=3×10⁸m/s÷λ

λ= 3×10⁸÷4.34 x 10¹⁵

λ=6.9x 10⁻⁸m

Therefore,  the wavelength of wave is 6.9x 10⁻⁸m.

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Answer:

Firms produce goods and services,which they sell to households in return for revenue.

Answer: Goods and Services

Explanation:

Answer:

Option B. 261 KPa.

Explanation:

From the question given above, the following data were obtained:

Initial volume (V1) = 200 mL

Initial pressure (P1) = 110 kPa

Initial temperature (T1) = 275 K.

Final volume (V2) = 95 mL

Final temperature (T2) = 310 K

Final pressure (P2) =?

The new pressure (P2) can be obtained by using the following formula as illustrated below:

P1V1 /T1 = P2V2 /T2

110 × 200/275 = P2 × 95/310

22000 / 275 = P2 × 95/310

80 = P2 × 95/310

Cross multiply

80 × 310 = P2 × 95

24800 = P2 × 95

Divide both side by 95

P2 = 24800/95

P2 = 261 KPa.

Thus, the new pressure of the gas is 261 KPa.

The expected color of each element in a model of a molecule is black, red, blue, and white.

When we observe the model of a molecule in a color-based spectrum then we see different colors as the molecule is made up of different atoms.

So, in the full color-based spectrum, elements of organic carbon show different colors. It appears to be black, blue, red, and green.

However, in the color-based spectrum, carbon is black.

In the gaseous state, oxygen is colorless, however, in liquid form, it appears to have a pale blue color.

Nitrogen makes up a major portion of the atmosphere. The sky color appears to be blue due to nitrogen. Hence, nitrogen is blue. Hydrogen is a white colorless gas.

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The complete question is:

Identify the expected color of each element in a model of a molecule.

Carbon

Oxygen

Nitrogen

Hydrogen

The following statements correctly describe ionization energy: "The ionization energy increases for the removal of each subsequent electron" and "The ionization energy describes the energy needed to add an electron to a neutral atom."

Ionization energy is the energy required to remove an electron from a neutral atom or ionize it. It is an important property that reflects the ease with which an atom loses electrons. Based on this concept, the ionization energy follows certain trends.

The statement "The ionization energy increases for the removal of each subsequent electron" is correct. As electrons are successively removed from an atom, the ionization energy generally increases because the remaining electrons experience greater electrostatic attraction from the positively charged nucleus.

Additionally, the statement "The ionization energy describes the energy needed to add an electron to a neutral atom" is also correct. Ionization energy can also refer to the energy required to add an electron to a neutral atom, forming a negatively charged ion.

The other statements, including "IE1 for a given element is always larger than IE2," "Ionization energy is always positive (i.e., endothermic)," "Ionization energy is always negative (i.e., exothermic)," "IE, for a given element is never larger than IE2," and "IE, for a given element is sometimes larger than IE2," are not correct descriptions of ionization energy.

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Answer: 129.93577

Explanation:

There-

Answer:

protein molecule

Explanation:

Answer: Protein

Explanation:

Amino acids from protein molecules.

The heat that is absorbed in each case or the mass obtained are;

1)  305 g

2) -27.4 J

3) 523°C

4) 465 g

5)  -58.9 J

Let us now go on to look at the question that have been asked and the things that we need to find in each case. If we look at the question we can see that;

q = heat

dT = temperature change

m = mass

1) q = 119150 J

ΔT = 1409.71

c = 0.2772

q = mcdT

m = q/cdT

m = 119150 J/1409.71 *  0.2772

m = 305 g

2) q = 83.5 * 2.05 * (-0.16)

q = -27.4 J

3) dT = q/mc

= 57984 J/535.2 * 0.207

= 523°C

4) m = q/dT * c

m = 1914.9 J/(-17.27) * 0.2386

m = 465 g

5) q = 30.3 * 0.2772 * (-7.01)

q = -58.9 J

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Answer:

Explanation:

Recall that the density of a gas is its mass to volume ratio,  

ρ

=

m

V

. Therefore, if we can determine the mass of some volume of a gas, we will get its density. The density of an unknown gas can used to determine its molar mass and thereby assist in its identification. The ideal gas law, PV = nRT, provides us with a means of deriving such a mathematical formula to relate the density of a gas to its volume

Answer:

amphibians

Explanation:

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Answer:

troposphere

Explanation:

Answer:

Hello!!! Princess Sakura here ^^

Explanation:

We live in the troposphere since 99% of the water vapor in the atmosphere is found here.

The paramagnetism of these complexes is determined by the presence of unpaired electrons in the d-orbitals of the nickel(II) ion. The change in ligands and ligand field splitting effects lead to a variation in the number of unpaired electrons, resulting in a change in paramagnetism.

The color change is attributed to the different ligand field splitting and the corresponding absorption of specific wavelengths of light. The paramagnetism and color change observed in the given complexes can be rationalized based on the electronic configurations of the metal ion (nickel) and the ligand field splitting effects.

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At 55 mph, it takes about  228  feet to react to something you see and to bring the car to a complete stop.

It has taken as long as afootball field to stop your car at 55 mph ( 265 and 303 feet) and is assuming you were alert. If you drive at 55 mph on a dry , level pavement , your average stopping distance will be 265 feet . The stopping distance increases in the adverse conditions.

The car stops when both tire and the car have comes to a completely on rest point.

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