What is nystatin and triamcinolone acetonide ointment used for.

Answer:

a changes more because it going higher

Explanation:

Answer:

They will be the same because amplitude doesn't affect speed. A physics teacher attaches a slinky to the wall and begins introducing pulses with different wavelength. The denser the medium at the compression, the greater the amplitude of the wav

Explanation:

Answer:

B no. is the answer because

Explanation:

So this can probably be the the answer

Hope my answer helps

Solid is the state in which matter maintains a fixed volume and shape; liquid is the state in which matter adapts to the shape of its container but varies only slightly in volume; and gas is the state in which matter expands to occupy the volume and shape of its container.??.....

Activated charcoal, is carried by some ems systems, supplied for use in emergency situations is d) as a powder, which is mixed with water before administration

Activated charcoal, which is carried by some EMS systems, is supplied for use in emergency situations as a powder, which is mixed with water before administration. This is option D in the question. Activated charcoal is used to treat certain types of poisoning or drug overdoses by adsorbing the toxic substances and preventing them from being absorbed into the body.

It is important to note that activated charcoal should only be used under the guidance of a medical professional and is not effective for all types of poisoning or overdoses.

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The characteristics and the type of molecular bond they describe:

1. Bonds found in Halite (between Na⁺ and Cl⁻): Ionic bond

2. Bonds found between Si and O in the Si-O tetrahedron: Covalent bond

3. Bonds inside the water molecule (between the H and O): Covalent bond

4. Bonds that exist between two water molecules: Hydrogen bond

5. Strongest bond type: Covalent bond

6. Weakest bond type: Van der Waals bond

7. Bonds that are used by water to dissolve salt: Ionic bond

The ionic bond is a type of molecular bond found in halite (between Na⁺ and Cl⁻). The Si-O tetrahedron is held together by a covalent bond. The bond inside the water molecule (between the H and O) is also a covalent bond. The hydrogen bond is the type of bond that exists between two water molecules. The covalent bond is the strongest bond type, while the van der Waals bond is the weakest bond type. Water uses the ionic bond to dissolve the salt.

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The initial temperature of argon is approximately 185.19 K.

To determine the initial temperature of argon, we can use the concept of thermal equilibrium.

In thermal equilibrium, the total thermal energy of the system remains constant. Since the helium gains 2500 J of energy, the argon must have lost an equal amount of energy to reach equilibrium.

Given that the initial thermal energy of helium is 7500 J and it gains 2500 J, the total thermal energy of the system after the exchange is 7500 J + 2500 J = 10000 J.

Since the helium and argon are at thermal equilibrium, their combined thermal energy is constant. Therefore, the initial thermal energy of argon must have been 10000 J - 7500 J = 2500 J.

To determine the initial temperature of argon, we can use the equation:

thermal energy (J) = (number of moles) × (molar specific heat) × (temperature change)

The molar specific heat capacity of an ideal gas at constant volume (Cv) is approximately 3R/2, where R is the ideal gas constant (8.314 J/(mol·K)).

Let's assume the initial temperature of argon is T K. Using the equation above, we can set up the following equation:

2500 J = (1 mol) × (3R/2) × (T - T(initial))

Since the argon is initially at a higher temperature than the final equilibrium temperature, we can assume that T(initial) > T.

Simplifying the equation:

2500 J = (1 mol) × (3R/2) × (-T(initial))

Solving for T(initial):

T(initial) = -2500 J / ((1 mol) × (3R/2))

T(initial) = -2500 J / (1.5 mol × 3R)

T(initial) ≈ -185.19 K

The negative sign indicates that the initial temperature of argon is lower than the final equilibrium temperature. However, negative temperatures in this context do not have a physical meaning, so we can disregard the negative sign.

Therefore, the initial temperature of argon is approximately 185.19 K.

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The appropriate explanation for the non-metal is that the higher effective nuclear charge less will be the atomic radius.

Atomic radius typically decreases during a period from left to right. There are a few little outliers, such how the oxygen radius is a tiny bit bigger than the nitrogen radius. Protons are gradually added to the nucleus at the same time that electrons are gradually added to the main energy level. The enhanced positive charge of the nucleus gradually attracts these electrons closer to it. The size of the atoms shrinks as the strength of attraction between nuclei and electrons grows. Due to electron-electron repulsions that would otherwise result in the atom's size expanding, the effect becomes less pronounced as one proceeds further to the right in a period.

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Answer:

-415.5°F (-248.6°C)

Explanation:

Answer: The melting point/condensation point of neon is 24.53888889. Of course, I'm sure you can round that. The freezing point would be 521.74. All of this is in Kelvin

Answer:

190

Explanation:

Gold has atomic number of 79, which is the number of protons.

Mass number = #protons + #neutrons = 79 + 111 = 190

Answer:

cyclohexene I think that's the answer

Answer:

B

Explanation:

Brainlest is apprciatedddddddddddd

Conversion of Ethyne into Ethanol:

The ethanal can be prepared by the ethyne by treating the ethyne with mercuric sulphate in presence of acid. First the mercury attacks on the reactant ethyne and forms a cyclic structure. Then water attacks on this cyclic structure forming a mercury cation. Then by the removal of hydride alcohol forms.

Hydration of Ethyne:

Alkynes readily combine with water in the presence of acid (usually sulfuric acid) and mercury(II) salts (usually the sulfate is used) to form carbonyl compounds, in a process known as Kucherov's reaction. In the case of acetylene (ethyne) the product is acetaldehyde (ethanal), while other alkynes form ketones.

To solve this problem, we need to use the equilibrium expression for the base dissociation reaction of pyridine:

C5H5N + H2O ↔ C5H5NH+ + OH-

where Kb is the base dissociation constant for pyridine, defined as:

Kb = [C5H5NH+][OH-]/[C5H5N]

We can use the Kb value to determine the concentration of hydroxide ions produced when pyridine dissolves in water. We can assume that the initial concentration of pyridine is equal to the final concentration of pyridine, since pyridine is a weak base and only partially dissociates in water.

We can also assume that the concentration of hydroxide ions produced is much smaller than the initial concentration of pyridine, so we can neglect its contribution to the total concentration of the solution.

First, we can calculate the concentration of hydroxide ions produced by pyridine:

Kb = [C5H5NH+][OH-]/[C5H5N]

1.7 x 10^-9 = [x][x]/[0.10-x]

where x is the concentration of hydroxide ions produced by pyridine.

Simplifying the expression, we get:

x^2 / (0.10 - x) = 1.7 x 10^-9

Since x is much smaller than 0.10, we can assume that (0.10 - x) is approximately equal to 0.10:

x^2 / 0.10 = 1.7 x 10^-9

Solving for x, we get:

x = sqrt(1.7 x 10^-9 x 0.10) = 1.2 x 10^-5 M

Therefore, the concentration of hydroxide

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A near-azeotropic refrigerant blend is a mixture of two or more refrigerants that have similar boiling points and vapor pressures, resulting in a composition that behaves like a single fluid. These blends are designed to offer improved performance and efficiency compared to single-component refrigerants.

Two examples of near-azeotropic refrigerant blends are R-410A and R-404A.

R-410A is a blend of difluoromethane (R-32) and pentafluoroethane (R-125), which has replaced R-22 as a popular refrigerant for air conditioning systems due to its superior efficiency and environmental properties.

R-404A is a blend of tetrafluoroethane (R-134a), pentafluoroethane (R-125), and 1,1,1,2-tetrafluoroethane (R-143a), which is commonly used in commercial refrigeration applications such as supermarkets and convenience stores.

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Answer:its c

Explanation:Oxidized: loses electrons...

Fe+2 gains electrons

C starts at +2, and ends at +4, it lost 2 electrons.

O starts at -2, ends at -2

There is an inversion of stereochemistry, which implies a back-side attack of the nucleophile as in SN₂ reaction the nucleophile attacks opposite from the side of the leaving group.

SN2 (Substitution Nucleophilic Bimolecular) reactions occur when a nucleophile attacks an electrophilic carbon atom and substitutes a leaving group. In SN₂ reactions, the nucleophile attacks from the opposite side of the leaving group, which causes the stereochemistry at the reaction center to invert.
The size of the anion can affect the nucleophilicity due to solvation, with larger anions being less suppressed by solvation.

Additionally, smaller anions may be more solvated by ion-dipole forces.

However, these factors do not directly influence the stereochemical outcome of the SN₂ reaction.

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Answer:

Had 3.612 x 10²⁴ ions (Not too sure of the answer )

Explanation:

But anyway heres My approach.

mole of sodium is 6 .

If 1 mole gives 6.02x10²³ ions

then 6moles will be = x ions

x ions = 6 x 6.02x10²³ / 1 mole

x = 3.612x10²⁴ ions

Based on a scene showing a physical change in a piston-cylinder assembly, the thermodynamic numbers indicated below are 760 torr 760.

The first law of thermodynamics states that the following equation describes how the change in internal energy relates to the heat exchanged by the system and the work performed on or by the system: U = Q + W, where Q represents the heat energy that the system exchanged.

Extensive and intensive thermodynamic quantities are traditionally separated into these two categories. While intensive quantities are independent of system size, extensive quantities grow linearly with system size.

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Answer:

Using blue and red litmus paper.

Explanation:

if we test all the solutions with blue and red litmus paper, we will know which solution is water and which solution is not water because blue and red litmus paper determined the pH of the solution. The pH of the water is neutral so it can't change its colour while on the other hand, the other solution change their colour due to acidic or basic nature of the solution so in this way we can determine the chemicals in the solution without tasting it.

Explanation:

hope it make sense to u :)

If you combine the results of this question with the results from question 3B, what do you know about the total pH change caused by adding the last 0. 1 mL of HNO3 it is now an acid.

A chemical that gives off hydrogen ions in water and forms salts by combining with certain metals. Acids have a sour taste and turn certain dyes red. Some acids made by the body, such as gastric acid, can help organs work the way they should. An example of an acid is hydrochloric acid.Nitric acid is a nitrogen oxoacid of formula HNO3 in which the nitrogen atom is bonded to a hydroxy group and by equivalent bonds to the remaining two oxygen atoms.

Nitric acid is made by reaction of nitrogen dioxide ( NO 2) with water. The net reaction is: 3 NO 2 + H 2O → 2 HNO 3 + NO. Normally, the nitric oxide produced by the reaction is reoxidized by the oxygen in air to produce additional nitrogen dioxide.

pH may be defined as a measure of free acidity. More precisely, pH is defined as the negative log of the hydrogen ion concentration. The range of pH extends from zero to 14. A pH value of 7 is neutral, because pure water has a pH value of exactly 7.

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Answer:

???

Explanation:

The statements which are true about heterogeneous mixtures are they settle out, they exhibit the tyndall effect and they exhibit brownian motion.

Heterogeneous mixtures are those mixtures in which composition of their constituent partiles are not identical or even, they may vary place to place.

Hence, options (1), (2) & (4) are correct.

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Answer:

A,B,D

Explanation:

i got it right

Answer:750 mL

Explanation:

volume=3x250 cm^3 = 750 cm^3

750 cm^3 x 1mL/1cm^3 =750 mL

If the volume of a beaker is 250 cm. The amount of water that three beakers can hold is equal to 750 mL.

Volume may be defined as the amount of space that is significantly occupied by a three-dimensional figure or object. It is measured in cubic units.

According to the question,

The volume of a beaker is = 250 cm.

It is known that 1 milliliter is exactly the same as 1 cm.

∴ The amount of water three beakers can hold = 250 × 3 = 750 mL.

Therefore, if the volume of a beaker is 250 cm. The amount of water that three beakers can hold is equal to 750 mL.

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I will do my best to help! Since I'm not the best at explaining things, I will just show my work. For number four, I wasn't exactly sure what you meant so I just solved it in different ways depending on the different ways I thought you meant. I'm sorry if I didn't end up solving it the way you wanted though. Either way, I really hope I helped you out!

1.
(8.41 X 104) + (9.71 X 104)
874.64 + 1009.84
= 1884.48

2.
(5.11 X 102) - (4.2 X 102)
521.22 - 428.4
= 92.82

3.
(8.2 X 103) + (4.0 X 103)
844.6 + 412
= 1256.6

4. (If the equation was supposed to be "(6.3 X 10^9) - (2.1 X 102)")
(6.3 X 10^9) - (2.1 X 102)
(6.3 x 1000000000) - (2.1 X 102)
6300000000 - 214.2
= 6299999785.8

4. (If the equation was supposed to be "(6.3 X 109) - (2.1 X 102)")
(6.3 X 109) - (2.1 X 102)
686.7 - 214.2
= 472.5

Both the sum and difference can be used in various contexts, such as solving equations, calculating measurements, or analyzing data. These operations are fundamental in mathematics and are often used in everyday situations where numbers need to be combined or compared.

1) (8.41 x 10⁴) + (9.71 x 10⁴) = 1.521 x 10⁵

To find the sum, add the numbers in scientific notation by ensuring that the exponents are the same. In this case, since both numbers have an exponent of 4, you can add the coefficients: 8.41 + 9.71 = 18.12. The result is then expressed in scientific notation as 1.812 x 10⁵, which is equivalent to 1.521 x 10⁵ after rounding to three significant figures.

2) (5.11 x 10²) - (4.2 x 10²) = 0.91 x 10²

To find the difference, subtract the numbers in scientific notation while keeping the exponents the same. In this case, both numbers have an exponent of 2. Subtracting the coefficients gives you: 5.11 - 4.2 = 0.91. The result is then expressed in scientific notation as 9.1 x 10¹, which is equivalent to 0.91 x 10² after rounding to two significant figures.

3) (8.2 x 10³) + (4.0 x 10³) = 12.2 x 10³

To find the sum, add the numbers in scientific notation by ensuring that the exponents are the same. In this case, both numbers have an exponent of 3. Adding the coefficients gives you: 8.2 + 4.0 = 12.2. The result is then expressed in scientific notation as 1.22 x 10⁴ after rounding to three significant figures.

4) (6.3 x 10⁹) - (2.1 x 10²) = 6.3 x 10⁹

To find the difference, subtract the numbers in scientific notation while keeping the exponents the same. In this case, the exponents are different, but when subtracting a small value like (2.1 x 10²) from a large value like (6.3 x 10⁹), the smaller value becomes insignificant. Therefore, the result is approximately equal to the larger value: 6.3 x 10⁹.

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catalytic process, A Ni catalyst is required for amide and alcohol to make the right esters. hydroxide ion is a stronger nucleophile than either water or ethanol,

In general, catalytic activity is a chemical interaction between a catalyst and a reactant that yields chemical intermediates more readily able to react with one another or with another reactant to yield the desired end product. Catalysis is the process of accelerating a chemical reaction by adding a catalyst to it. Catalysts are unaffected by and are not destroyed by the reaction.

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