Which of these does not accurated descibe the wright brothers first airplane

Adding an acidic reagent would increase the solubility of Cu(OH)2.

The solubility of Cu(OH)2 is governed by Le Chatelier's principle, which states that a system at equilibrium will shift to counteract any imposed changes. In this case, Cu(OH)2 is a basic compound and adding an acidic reagent would introduce more H+ ions into the system.

The OH- ions produced by the dissociation of Cu(OH)2 would combine with the H+ ions from the acidic reagent to form water, effectively removing OH- ions from the system. To maintain equilibrium, more Cu(OH)2 would dissolve, leading to an increase in its solubility.

When an acidic reagent is added, it increases the concentration of H+ ions in the solution. According to the equilibrium equation, Cu(OH)2 (s) ⇌ Cu2+ (aq) + 2 OH- (ag), the OH- ions are the product of the dissociation of Cu(OH)2.

By adding more H+ ions through an acidic reagent, the system will shift to the right to consume the excess H+ ions. This shift will result in an increase in the concentration of Cu2+ ions and OH- ions, leading to an increased solubility of Cu(OH)2. Therefore, adding an acidic reagent will effectively increase the solubility of Cu(OH)2.

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Answer: The final pressure inside the tank is 8.41 kPa.

Explanation: We can use the combined gas law to solve this problem, which relates the pressure, volume, and temperature of a gas:

(P1V1)/T1 = (P2V2)/T2

where P1, V1, and T1 are the initial pressure, volume, and temperature, respectively, and P2, V2, and T2 are the final pressure, volume, and temperature, respectively.

We are given P1 = 25.0 kPa, T1 = -50 C = 223 K, and V1 is unknown. We also know that the temperature decreases by a factor of three, so T2 = T1/3 = 223/3 K.

To find V2, we need to assume that the steel container is rigid and its volume remains constant. Therefore, V1 = V2, and we can cancel out the volume from the equation:

P1/T1 = P2/T2

Substituting the values, we get:

P2 = P1 * T2 / T1 = 25.0 * (223/3) / 223 = 8.41 kPa

Therefore, the final pressure inside the tank is 8.41 kPa.

Answer:

So if pressure of a gas is increased by 25%, the volume of a gas is decreased by 25%.

Explanation:

Answer:

biological decay

Explanation:

Hope this helps

The polar molecule different from a non-polar molecule is  option A) Polar molecules have charges separated like poles of a magnet.

Polar molecules and non-polar molecules differ in terms of their distribution of electrical charge.  This results in an uneven distribution of charge, with one side of the molecule having a slightly positive charge (δ+) and the other side having a slightly negative charge (δ-).

This charge separation occurs when there is an uneven distribution of electrons within the molecule, resulting in a molecular dipole. The positive and negative charges are like the poles of a magnet, with one end being slightly positive (δ+) and the other end slightly negative (δ-).

In contrast, a non-polar molecule has an even distribution of electrons and does not have a significant separation of charges. The electrons are shared equally among the atoms in the molecule, resulting in a neutral overall charge and no distinct positive or negative ends.The correct answer is option A.

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Answer:

true

Explanation:

np have a good day brainliest?

Answer:

M = 0.317 m

Explanation:

From the given information:

Using the following formula:, the molality M is:

\(M= \dfrac{W_A}{M_A}\times \dfrac{1000}{W_B(g)}\)

where;

M = molality

\(W_A\)= mass of the solute = 27.1 g

\(M_A\) = molar mass of the solute = 342.8

\(W_B\) = mass of the given solvent  = 250 g

∴

\(M= \dfrac{W_A}{M_A}\times \dfrac{1000}{W_B(g)}\)

\(M= \dfrac{27.1}{342.8}\times \dfrac{1000}{250}\)

M = 0.317 m

Answer:

Synthesis reaction

Explanation:

In synthesis reactions, two or more atoms/molecules combine to form a larger molecule.

These reactions follow the general structure: A + B <-----> AB.

Answer:

To accurately determine the precise composition of an unknown substance, a combination of analytical techniques may be used. Here are some steps that can be taken:

Physical examination: Conduct a visual and physical examination of the substance to gather information about its color, texture, odor, and other observable characteristics.

Elemental analysis: Determine the elemental composition of the substance using techniques such as X-ray fluorescence (XRF) spectroscopy or inductively coupled plasma (ICP) spectroscopy.

Chromatography: Use chromatography techniques, such as gas chromatography (GC) or liquid chromatography (LC), to separate and analyze the individual components of the substance.

Spectroscopy: Use spectroscopy techniques, such as infrared (IR) spectroscopy or mass spectrometry (MS), to analyze the molecular structure of the individual components of the substance.

Nuclear magnetic resonance (NMR) spectroscopy: Use NMR spectroscopy to identify the arrangement of atoms in molecules, and thus the molecular structure of the individual components of the substance.

Microscopy: Use microscopy techniques, such as scanning electron microscopy (SEM) or transmission electron microscopy (TEM), to examine the physical and structural characteristics of the substance at a microscale.

Comparison with known standards: Compare the results obtained from the analytical techniques with those of known standards or reference materials to identify and quantify the individual components of the unknown substance.

Overall, a combination of these analytical techniques may be used to accurately determine the precise composition of an unknown substance. The specific techniques used will depend on the nature of the substance and the analytical capabilities of the laboratory or facility conducting the analysis.

Explanation:

Answer:

Physical properties are typically things you can detect with your senses.

Explanation:

Answer:

A student is testing a solid material to determine whether it is a pure substance or a mixture. Which observation would MOST likely indicate that the material is a mixture? The material has crystals of two different colors. atom.

Hi there! Answer is below :)

Explanation:

For this question, we apply Boyle's Law and Charles' Law.

When you double the amount of pressure and temperature of a compound or mixture, the volume will decrease by a half. So, if the pressure and temperature are 2, and the volume is 1, and you double, your volume will be 0.5 and your pressure and temperature will be 4.

Best of Luck!

While being made from natural resources, electricity does not constitute a natural resource because it goes through several procedures to produce it.

Oil, coke, nat gas, metals, stone, or sand are examples of natural resources. Other natural resources include water, soil, sunlight, air, and so on. Natural resources have value because they enable life and provide for human needs.

Financially referred to it as land and raw materials, land resources (also known as natural resources) are found naturally within ecosystems that are mostly unaltered by civilization. A natural resource's biodiversity levels across different habitats are frequently used to describe it.

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The two solutions that have similar solubilities at 40°C will be Na₂HAsO₄ and Na₂SO₄.

It is the ability of a solute to be dissolved, especially in water.

As the temperature increases the solubility of the gas generally decreases"

According to given information and graph attached as reference ;

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Answer:

it's D 240

Explanation:

I took the

a) The total pressure of the system is  1.79 atm

b) The mole fraction and partial pressure of hydrogen is  0.89 and 1.59 atm respectively

c) The mole fraction and the partial pressure  of argon is 0.11 and 0.19 atm.

We know tat we can be able to obtain the total pressure in the system by the use of the ideal gas equation. We would have from the equation;

PV = nRT

P = pressure

V = volume

n = Number of moles

R = gas constant

T = temperature

Number of moles of hydrogen = 14.2 g/2g = 7.1 moles

Number of moles of Argon = 36.7 g/40 g/mol

= 0.92 moles

Total number of moles =  7.1 moles + 0.92 moles = 8.02 moles

Then;

P = nRT/V

P = 8.02 * 0.082 * 273/100

P = 1.79 atm

Mole fraction of hydrogen = 7.1/8.02 = 0.89

Partial pressure of hydrogen =  0.89 * 1.79 atm

= 1.59 atm

Mole fraction of argon = 0.92 / 8.02

= 0.11

Partial pressure of argon = 0.11  *  1.79 atm

= 0.19 atm

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Answer:

B) The density changed.

C) The salt dissolved in the water.  

E) The salt and the water can still be separated into their individual molecules

Explanation:

A physical change is a change that occurs in a substance which affects only the physical properties of that substance such as color, density, boiling o melting point, etc. In a physical change, the substance retains its chemical composition and no new substances are formed. The changes that occur can as well be reversed.

A chemical change is a change that occurs in a compound which affects or alters the chemical properties of that substance, hence transforming the substance into an entirely new substance different from the original substance. The changes that occur in a chemical change are not easily reversible.

In the given experiment, addition of salt to water results in the following changes:

Density is a physical property of a substance, and as the dissolved salt can be easily recovered from the salt solution solution by evaporation followed by condensation, the changes observed are physical changes.

Vapor pressure of X is lower than Y at 20°C, therefore heat of vaporization pf X is greater than Y.

Vapour pressure is a measure of a material's tendency to change into a gaseous or vapour state, and it rises with temperature.

The boiling point of a liquid is the temperature at which the vapour pressure at its surface equals the pressure exerted by its surroundings.

Heat of vaporization ∝ 1 ÷ Vapour pressure

But at 60°C vapour pressure of X is greater than Y.

Thus, at this temperature heat of vaporization pf Y is greater than X

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Since this compound has Aluminum and Hydroxide in its composition, when we name it, we will need to use the cation (positively charged ion) before the anion (negatively charged ion), therefore the name will be:

Aluminum hydroxide

Answer:

5f14 6d10 7s2 7p6

Explanation:

This is because oganesson is a noble gas and element of group 18 which does not occur or is not produced naturally. It is produced in an experiment. It is a gas at room temperature and it has atomic number of 118. It is harmful and a radioactive gas due to it's radioactive properties and it is produced in small amound

Answer:

The end point of a titration is the point at which the reaction between the analyte (the substance being analyzed) and the titrant (the solution being added to the analyte) is complete. The end point is usually determined by a change in the color of the solution, and this change is typically caused by an indicator added to the analyte solution.

The indicator is a substance that changes color at or around the pH at which the reaction is complete. The indicator is chosen based on the properties of the analyte and titrant, and the pH range over which the reaction occurs. Common indicators include phenolphthalein, bromothymol blue, and methyl orange.

For example, when titrating a strong acid (like HCl) with a strong base (like NaOH), phenolphthalein is often used as the indicator. The phenolphthalein molecules are colorless in acidic solution, but they turn pink in basic solution. As the NaOH is added to the HCl, the solution becomes increasingly basic. Once the pH reaches the endpoint, the indicator turns pink. This indicates that the reaction is complete and no further addition of NaOH is required to completely react with the HCl.

The endpoint determination is critical in performing accurate titrations. The endpoint must be identified accurately and consistently in order to obtain reliable and reproducible results.

A titration is a technique that is used to measure the concentration of an unknown substance in a solution using a standard solution with a known concentration. The endpoint of a titration is the point at which the reaction between the two solutions is complete, and no more titrant (standard solution) is needed to react with the analyte (unknown substance). There are several ways to recognize the endpoint of a titration, including:1. Indicators: An indicator is a substance that changes color when the endpoint is reached.

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In 4.38 × 10^21 molecules of water, there are approximately 0.073 moles.

To calculate the number of moles, we can use Avogadro's number, which states that 1 mole of a substance contains 6.022 × 10^23 molecules. So, by dividing the given number of molecules (4.38 × 10^21) by Avogadro's number, we can find the number of moles.

Now, let's explain the process in detail. Avogadro's number is a constant that represents the number of particles (atoms, molecules, etc.) in one mole of a substance. It is approximately 6.022 × 10^23. Therefore, if we divide the given number of molecules by Avogadro's number, we can determine the number of moles.

In this case, we divide 4.38 × 10^21 molecules by 6.022 × 10^23 molecules/mole, resulting in approximately 0.073 moles.

Significant figures play an important role in reporting the answer. The given number of molecules has three significant figures (4, 3, and 8), so our answer should be reported with three significant figures as well. Therefore, the number of moles is approximately 0.073.

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Answer:

the second one

Explanation:

because all of them are under

Yes the all types of the consumers are the heterotrophs.

The consumers play a very important role in the ecosystem of the earth by maintaining the population and growth to the organism of the ecosystem. If we remove the consumer or either the producer then the whole system of the ecosystem will be destabilize, and thus the ecosystem can survive from the overpopulation problem and lack of food problem. The other organism can transfer energy to the consumer.

Both the primary (herbivores) and as well as the secondary (carnivores and omnivores) consumers are heterotrophs.

So we can conclude that yes the all types of the consumers are the heterotrophs.

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Answer:

bromine

Explanation:

Answer:

The answer is "\(32819.9 \ \frac{J}{mol}\\\\\)"

Explanation:

\(Boron: 5^{B}\to 1s^2 2s^2 2p^1\)

\(\Delta E=-2.18\times 10^{-18}\ \frac{J}{atom}\ (\frac{1}{\infity^2}-\frac{1}{n^2_{initial}})(z^2) (6.022\times 10^{23}\ \frac{atom}{mol})\\\\\)

      \(=-2.18\times 10^{-18}\ \frac{J}{atom}\ (0-\frac{1}{1})(5^2) (6.022\times 10^{23}\ \frac{atom}{mol})\\\\ =2.18\times 10^{-18}\times 25 \times 6.022\times 10^{23}\ (\frac{J}{mol})\\\\ =328.199 \times 10^{5}\ (\frac{J}{mol})\\\\ =32819 \times 10^{3}\ (\frac{J}{mol})\\\\ =32819.9 \ (\frac{J}{mol})\\\\\)

In this ranking we would have; C > N > O > F > Ne.

The term formal charge has to do with the charge that an atom appears to have in  compound. We can obtain the formal charge from the formula;

Formal charge = [# of valence electrons] – [electrons in lone pairs + 1/2 the number of bonding electrons]

Let us now consider the atoms; F, O, N, C, Ne. We have to rank the atoms by the common number of single bonds the element makes when it bears no formal charge.

In this ranking we would have; C > N > O > F > Ne.

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Based on the given reactions, the compounds are as follows:

A: The specific product formed from the reaction between prop-1-yne and either 2HBr or H2O2.

B: The product formed when compound A reacts with 2H2O.

C: The product formed when compound B reacts with K2CO3(aq).

D: The product formed from the heat-induced reaction of compound C.

E: The product formed when compound D reacts with HBr.

Based on the given reactions, let's analyze the compounds involved:

Reaction 1: prop-1-yne + 2HBr/H2O2 = A

The reactant prop-1-yne reacts with either 2HBr or H2O2 to form compound A. The specific product formed will depend on the reaction conditions.

Reaction 2: A + 2H2O = B

Compound A reacts with 2H2O (water) to form compound B.

Reaction 3: B + K2CO3(aq) = C

Compound B reacts with K2CO3(aq) (potassium carbonate dissolved in water) to form compound C.

Reaction 4: C + heat = D

Compound C undergoes a heat-induced reaction to form compound D.

Reaction 5: D + HBr = E

Compound D reacts with HBr (hydrobromic acid) to form compound E.

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Answer:

A. The reaction shifts to the right (products) and the concentrations of I and H₂ decrease.

Explanation:

If gas is removed from the system at equilibrium, the system will try to compensate for the loss by shifting the reaction in a direction that produces more gas molecules. This is known as Le Chatelier's principle, which states that a system at equilibrium will respond to a disturbance by shifting in a way that minimizes the effect of the disturbance.

In this case, since gas is being removed from the system, the reaction will shift to the side that produces more gas molecules. Looking at the balanced equation, we can see that 2HI(g) has a greater number of gas molecules compared to H₂(g) and I₂(g). Therefore, the system will shift to the right (products) to produce more HI(g) and reestablish equilibrium.