which type of substance is fast acting, either immediately suffocating the victim or causing massive burning?

The most common agent resulting in nephrotoxicity and subsequent acute tubular necrosis (ATN) in hospitalized patients is an infection of the kidney.

These two are the most deadly diseases caused by defects in the human kidney.

The infection releases harmful poison which affects the cell of the kidney and damages the whole tissue too.

Therefore, the most common agent resulting in nephrotoxicity and subsequent acute tubular necrosis (ATN) in hospitalized patients is an infection of the kidney.

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Answer:

waxing is in the evening and waning is in the morning if you cant see the moon in the evening it is waning if you can see it in the evening it is waxing

Increasing the NaCl concentration increases the osmotic pressure due to the increased number of solute particles. The results would be considered consistent with the prediction if the experimental findings aligned with the anticipated increase in osmotic pressure.

Increasing the concentration of NaCl has an effect on osmotic pressure. Osmotic pressure is the pressure required to prevent the net flow of water across a semipermeable membrane. When the NaCl concentration increases, the osmotic pressure also increases.

The reason for this effect is that NaCl molecules dissociate into Na+ and Cl- ions when they are dissolved in water. These ions contribute to the total solute concentration in the solution. According to the van't Hoff equation, osmotic pressure is directly proportional to the concentration of solute particles. Therefore, as the concentration of NaCl increases, the number of solute particles also increases, resulting in a higher osmotic pressure.

To understand this, let's consider an example. Imagine two solutions, one with a low concentration of NaCl and another with a high concentration of NaCl. If these solutions are separated by a semipermeable membrane, water molecules will move from the side with lower NaCl concentration to the side with higher NaCl concentration. This movement is driven by the difference in solute concentration, and it continues until the osmotic pressure on both sides of the membrane is equal.

In terms of the results compared to prediction, if we correctly anticipated that increasing the NaCl concentration would lead to an increase in osmotic pressure, and if the experimental results aligned with this prediction, then the results would be considered consistent with the hypothesis. On the other hand, if the results differed from the prediction, further analysis and investigation would be necessary to determine the reasons behind the discrepancy.

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Answer:

D  or C Because C speads up the process while D makes the water have to process less But I say C

Explanation:

could I get brainlists plz

Answer: C & D

Explanation: hope this helps

Among electromagnetic waves, UV rays are most dangerous because exposure to these radiation cause serious problems in living organism. Therefore, the longest  wavelength in Balmer series is 656nm.

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.

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

Mathematically,

E=hc/λ

For Balmer series,

n1​ = 2

For longest wavelength in Balmer series, minimum energy transition is to be considered because wavelength is inversely proportional to Energy.

n2​ = 3

λ1​=1.097×10⁻²nm−1×12(221​−321​)

⇒λ=656nm

Therefore, the longest  wavelength in Balmer series is 656nm.

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Answer:

it is aluminum (Al)

Explanation:

Given that we want to prepare a 10% solution of sodium hydroxide in 200 mL, we need to calculate the mass of sodium hydroxide required to make this solution.

We can use the following formula to calculate the mass of solute required to make a given volume and concentration of solution:

The density of solid NaOH is 2.13 g/mL. So, the density of sodium hydroxide solution is:

Sodium hydroxide, also known as lye and caustic soda or caustic soda, is an inorganic compound with the chemical formula NaOH. This compound is an ionic compound in the form of a white solid composed of the sodium cation Na⁺ and the hydroxide anion OH⁻. Sodium hydroxide is a building block that can also be found in detergents and oil stain removers. We use it to make products clean better by influencing the formula molecules, so they work better together.

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Rainwater is affecting the parts of earth's surface that contain rocks through what is referred to as physical weathering.

This is also referred to as mechanical weathering and it is the process in which is the disintegration of rocks and minerals without any chemical change being experienced and the major agents of this type of weathering are water and wind.

Rainwater seeps into parts of the earth surface which contains rocks and weaken it which leads to it breaking into smaller particles as time goes thereby resulting in the formation of soil etc. This is therefore the effect rainwater has on rocky part of the earth surface.

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Answer:

The difference in potential energy between the reactants and products

Explanation:

The difference in potential energy between the reactants and products reveals the enthalpy of reaction, hence option B is correct.

The change in the enthalpy of a chemical reaction that takes place at constant pressure is known as the heat of reaction also known as the enthalpy of reaction. It is a unit of measurement for thermodynamics.

In a thermodynamic system, energy is measured by enthalpy. Enthalpy is a measure of a system's overall heat content and is equal to the system's internal energy plus the sum of its volume and pressure.

The difference between  total product and total reactant molar enthalpies, computed for substances in their standard states, is the standard enthalpy of reaction for a chemical reaction.

Therefore, the difference in potential energy between the reactants and products reveals the enthalpy of reaction, hence option B is correct.

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The formula that is given in option (3) represents a binary compound.

The Binary chemical compound is a chemical compound that contains exactly two different elements.

In Ne only one element is present, so it is not a binary compound.

In \(Br_2\), two same elements are present, so it is not a binary compound.

In \(H_2SO_4\), three elements are present, so it is not a binary compound.

But in case of \(C_3H_8\), only two elements that is carbon and hydrogen are present. So, this is a binary compound.

So, option (3) is correct.

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Answer:

c. c. c c c c c cçcc. ccccccccc

Explanation:

ccc cc

When solid converts to gas then heat is required to break the intermolecular forces of attraction between the particles. In this process heat increase but temperature remains the same. So option A is correct option.

Phase transition is a process in which transition takes place from one state to another of a medium on changing temperature or pressure.  Phase transition is a physical process as there is no breaking of old bond and forming of new bonds takes place.

During phase transition temperature remain constant as the extra heat that is given to the system that goes into breaking of  intermolecular forces of attraction between the particles. So overall temperature remains same but heat keeps on increasing. Hence option A is correct.

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Answer:

Alkaline earths have larger lattice energies than alkali metals due to small size and high charge. Hence, alkaline earth metal hydroxides have lower solubility than alkali metals.

Answer:

Explanation:

When a can of coke is removed from the fridge and then warmed up to room temperature, the entropy of the beverage will increase.

We can define entropy as the disorderness of a system or the randomness of a particular system. The entropy of a system changes with a change in the temperature of the system.

As the temperature increases, the entropy of the system also increases and when the temperature is reduced, the entropy of the system also decreases. When a can of coke is kept in fridge, the entropy decreases as the temperature gets decreased.

As the can of the coke is taken out and warmed up to room temperature, the entropy increases with the increase in temperature as the randomness of the molecules increases.

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The time it takes for the partial pressure of cyclopropane to decrease from 1.0 atmosphere to 0.125 atmosphere at 500°C can be estimated using the half-life of the isomerization reaction.

The half-life of a first-order reaction is defined as the time it takes for the concentration of the reactant to decrease by half. In this case, the half-life of the isomerization of cyclopropane to propylene is 19 minutes at 500°C. To find the time it takes for the partial pressure to decrease from 1.0 atmosphere to 0.125 atmosphere, we can use the relationship between concentration and time in a first-order reaction. The time can be calculated as the half-life multiplied by the logarithmic ratio of the initial concentration to the final concentration. This calculation would give an estimate of the time required for the partial pressure of cyclopropane to decrease from 1.0 atmosphere to 0.125 atmosphere.

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When a living plant cell with a turgor pressure (yp) of 0.4 MPa and a yield threshold (ys) of -0.5 MPa is placed into a beaker filled with a solution with a yield threshold (y) of -0.9 MPa, the cell should shrink or undergo plasmolysis.

Plant cells maintain their shape and rigidity due to turgor pressure, which is the pressure exerted by the cell contents against the cell wall. In this case, the living plant cell has a turgor pressure (yp) of 0.4 MPa. The yield threshold (ys) is the pressure at which the cell membrane starts to collapse or shrink. In this case, the yield threshold (ys) is -0.5 MPa.

When the plant cell is placed into a beaker filled with a solution that has a yield threshold (y) of -0.9 MPa, the external solution has a lower yield threshold than the cell. As a result, water will move out of the cell, causing it to shrink or undergo plasmolysis. Plasmolysis occurs when the cell membrane detaches from the cell wall, and the cell collapses due to the loss of water. Therefore, the cell should shrink or undergo plasmolysis in the given scenario.

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Answer:

A. Barium

Explanation:

hope this helps! :)

Answer:

9 moles

Explanation:

The balanced chemical equation for this decomposition reaction is as follows:

2KCIO3 → 2KCI+ 302

Based on this equation, 2 moles of potassium chlorate (KCIO3) decomposes to form 3 moles of oxygen gas (O2).

Hence, 6 moles of pottasium chlorate will decompose to produce;

6 × 3 ÷ 2

= 18 ÷ 2

= 9 moles of O2.

Answer:

Polyhalogen derivatives are given when Phenol is treated with bromine water, in which all the H-atoms present at the o- and p- positions are substituted by Bromine with respect to the -OH group.

hope it helps

thanku

Explanation:

Answer:

Hi, There! Your Answer Is Below!

A reactivity series is used to rank the chemical reactivity of a group of metals from most reactive to least reactive.

Explanation:

The reactivity series is a series of metal elements, and sometimes carbon and hydrogen, that is arranged according to their reactivity. A reactivity series is typically a vertically presented model with the most-reactive element placed at the top of the series and the least-reactive element placed at the bottom.

xXxAnimexXx :)

Please Mark branilest!

The binding energy of a nucleus refers to the minimum energy required to separate the nucleus into its constituent nucleons. The binding energy per nucleon (BE/A) is a more useful quantity than the absolute binding energy (BE) since it takes into account the number of nucleons present.

The more tightly bound a nucleus is, the higher its binding energy per nucleon. The equation that determines the binding energy is given by the formula, E=Δmc² where E is the binding energy, Δm is the mass defect, and c is the speed of light. The mass defect is the difference between the actual mass of a nucleus and the sum of the masses of its individual protons and neutrons. The mass of antimony-121 is the sum of the masses of its constituent nucleons, given by: Mass of antimony-121 = (71 x 1.00783 u) + (50 x 1.00867 u) = 120.90380 u The actual mass of antimony-121 is 120.90380 u. Using the mass of each nucleon and the actual mass of antimony-121, the mass defect of the nucleus can be determined as follows: Mass defect (Δm) = [71(1.00783 u) + 50(1.00867 u)] - 120.90380 u= 0.1471 u The binding energy can then be calculated using the formula: E = Δmc²= (0.1471 u)(1.66054 x 10^-27 kg/u)(2.99792 x 10^8 m/s)^2= 2.539 x 10^-10 J/mol To convert this to kilojoules per mole, we can divide by 1000:2.539 x 10^-10 J/mol = 2.539 x 10^-13 kJ/mol Therefore, the binding energy of antimony-121 is 2.539 x 10^-13 kJ/mol.

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The produced at the anode in the electrolysis of molten CuF2 is A. F₂.

During electrolysis, CuF₂ will separate into Cu₂⁺ cations and F⁻anions. Cu₂⁺ will be reduced to copper metal, which will deposit on the cathode, whereas F⁻ anions will be oxidized to fluorine gas on the anode in the electrolysis of molten CuF₂. Hence, the answer is option A. Fluorine gas (F₂) is generated at the anode in the electrolysis of molten CuF₂.

Therefore, during the electrolysis of molten CuF₂, Cu₂⁺ is reduced to copper metal, which deposits on the cathode, and F⁻ anions are oxidized to fluorine gas on the anode, which is produced at the anode. The chemical reactions taking place during electrolysis of CuF₂ are given below: At the cathode, Cu₂⁺ cations get reduced to copper metal. Cu₂⁺ + 2e⁻ ⟶ Cu. At the anode, F⁻ anions get oxidized to fluorine gas. 2F⁻ ⟶ F₂ + 2e⁻. Therefore, option A is correct.

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a. Probability (X = 3) = 0.180

b. Probability(X < 3) = 0.676

c. Probability(X >= 3) =  0.324

d. Probability (X >= 1) =  0.865

e. Probability (X >= 5) =  0.0525

(a)  we find the Probability of exactly three insect fragments in a 4-gram sample as :

λ = 0.5 * 4 = 2

P(X = 3) = (e^(-2) * 2^3) / 3!

P(X = 3) =  0.180

(b) Probability of fewer than three insect fragments in a 4-gram sample:

P(X < 3) = P(X = 0) + P(X = 1) + P(X = 2)

P(X < 3) = e^(-2) + (e^(-2) * 2) + (e^(-2) * 2^2)

P(X < 3) = 0.676

(c) Probability of at least three insect fragments in a 4-gram sample:

P(X >= 3) = 1 - P(X < 3)

P(X >= 3) ≈ 1 - 0.676

P(X >= 3) =  0.324

(d) Probability of at least one insect fragment in a 4-gram sample:

P(X >= 1) = 1 - P(X = 0)

P(X >= 1) ≈ 1 - e^(-2)

P(X >= 1) =  0.865

e. The Unusualness of containing five or more insect fragments is found as :

P(X >= 5) = 1 - (P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) + P(X = 4))

P(X >= 5) = 1 - (0.1353 + 0.2707 + 0.2707 + 0.1805 + 0.0903)

P(X >= 5) ≈ 1 - 0.9475

P(X >= 5) =  0.0525

In conclusion, the probability of a 4-gram sample of this supply of peanut butter containing five or more insect fragments is found to be 0.0525.

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Answer: The three major types of intermolecular interactions are dipole–dipole interactions, London dispersion forces (these two are often referred to collectively as van der Waals forces), and hydrogen bonds.

Hope this helps............ Stay safe and have a Merry Christmas!!!!!!! :D

Answer

Mass of (H30)2CrO = 38 g

Explanation

Given:

Mass of Sn(CrO4)2 = 43.4 g

Mass of (H3O)2HPO4 = 35.2 g

Required: The mass of (H30)2CrO4 that will be produced

Solution:

Calculate the possible mass that could be produced by each reactant, so as to determine the limiting reagent. Use stoichiometry.

For Sn(CrO4)2:

For (H3O)2HPO4

Sn(CrO4)2 will produce less (H30)2CrO4 therefore, Sn(CrO4)2 is the limiting reagent.

A food supply company produces Yellow-42 (from previous example) in 200-gram wholesale bottles. The grams of FeCl3 needed to produce one bottle of Yellow 42 is 303.638 grams.  The amount of NaOH needed to produce one bottle of Yellow 42 is 226.32 grams.

∴

Using the relation for the number of moles which is:

\(\mathbf{number \ of \ moles = \dfrac{mass }{molar \ mass}}\)

\(\mathbf{number \ of \ moles \ of \ Yellow \ 42 = \dfrac{200 g }{106.867 \ g/mol}}\)

\(\mathbf{number \ of \ moles \ of \ Yellow \ 42 =1.872 \ moles}\)

Now,

∴

Mass of FeCl₃ required = number of moles of  FeCl₃ × molar mass of FeCl₃

Mass of FeCl₃ required = 1.872 moles × 162.2 g/mol

Mass of FeCl₃ required = 303.638 grams

7.

Recall that:

Now, 1.872 moles of Fe(OH)₃ will require (3 × 1.872 moles of NaOH)

= 5.616 moles of NaOH

Thus, the amount of NaOH in grams, that will be needed to produce one bottle of Yellow 42 is:

= 5.616 moles × 40.3 g/mol (molar mass of NaOH)

= 226.32 grams of NaOH

8.

The company could set up this reaction in a way that ensures no iron (III) chloride is wasted in the reaction by using the concept of the stoichiometry of the reaction involved in the system and he should feed the reactant within the ratio of 1:3 for FeCl₃ and NaOH respectively.

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Simultaneous causality can cause the endogeneity problem. This statement is true and it can be stated as follows:

To address this problem, researchers often use instrumental variable techniques or conduct a suitable econometric analysis that accounts for endogeneity.

Endogeneity refers to the situation where the relationship between two variables is affected by a third variable that is not accounted for in the analysis.

Simultaneous causality occurs when two or more variables simultaneously influence each other. In this case, the relationship between the variables is not one-directional, making it difficult to establish a clear cause-and-effect relationship.

This can lead to endogeneity because the presence of simultaneous causality violates the assumption of exogeneity, which assumes that the explanatory variables are not affected by the error term in the regression model.

As a result, the estimated coefficients may be biased and inconsistent.

To address this problem, researchers often use instrumental variable techniques or conduct a suitable econometric analysis that accounts for endogeneity.

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Answer:

Made up of proton, electron, neutron and 40 different subatomic particles

Answer:

Explanation:

Hi there!

We have,

1 mole of Al = 6.23*\(10^{23}\) atoms

Also given no. of atoms = 3.90 x \(10^{22}\) atoms

Now,

6.23*\(10^{23}\) atoms= 1 mole

1 atom = \(\frac{1 }{6.23*10^{23}}\) moles

or, 3.90 x \(10^{22}\) atoms =  \(\frac{1 }{6.23*10^{23}}\) *3.90 x \(10^{22}\) moles

Therefore, 3.90 x \(10^{22}\) atoms has 0.0626 mols of Al.

Hope it helps!