Will the equilibrium constant for the reaction increase, decrease, or stay the same?.

Answer:

It is solid

Explanation:

Well a can i hard and solid because it is metal

Answer:

It conducts electricity well

It Is solid

It does not react easily with water or air

Explanation:

Edge 2021

The elements of heavy metals are used to absorb electrons in electron-dense stains.

A heavy metals are generally defined as metals with relatively high densities, atomic weight and atomic number.

They toxic and poisonous in nature. They occurs naturally and are very essential to life.

Arsenic, cadmium, lead, copper, nickel and mercury are the most commonly used heavy metals.

Electron staining means to absorb heavy metals of high scattering power to biological specimens which exhibit a small scattering power for electrons.

Thus, the elements of heavy metals are used to absorb electrons in electron-dense stains.

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Answer:

I am expecting that is option is d is correct answer

Explanation:

because in the grassland some animals can live

Answer:

D... i think lemme know if im wrong

Answer:my answer is never wrong

The edge

Explanation:

A and B are two imaginary substances. The molecules of substance A have weak electrical forces between them. The molecules of substance B have very strong electrical forces linking them. Substance A boils at a lower temperature.

Boiling is the process in which a liquid changes into a gas at its boiling point, which is the temperature at which its vapor pressure equals the atmospheric pressure. The boiling point of a substance is influenced by various factors, including the strength of the forces between its molecules.

In substance A, the molecules have weak electrical forces between them. These weak intermolecular forces imply that the molecules are not strongly attracted to each other. As a result, less energy is required to break these weak forces, and the substance can transition from a liquid to a gas more easily. Therefore, substance A will have a lower boiling point compared to substance B.

In substance B, the molecules have very strong electrical forces linking them. These strong intermolecular forces indicate that the molecules are strongly attracted to each other. Consequently, more energy is required to overcome these strong forces during the boiling process, making the substance have a higher boiling point.

Therefore, substance A, with weak intermolecular forces, would boil at a lower temperature, while substance B, with very strong intermolecular forces, would boil at a higher temperature.

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Answer:

SF722

Explanation:

Undecylenic Acid

Given parameters:

duration of fall  = 6s

Unknown:

Speed of the rock before it hits the ground  = ?

Solution:

To solve this problem, we apply one of the appropriate motion equations;

           V = u + gt

Where V is the final velocity

           u is the initial velocity

           t is the time taken

           g is the acceleration due to gravity  = 9.8m/s²

The initial velocity is 0;

     So;

              V = gt

Input the parameters and solve for V;

                V = 9.8 x 6  = 58.8m/s

The velocity before hitting the ground is 58.8m/s

Answer:

the water, gasoline, sand, and sugar

Explanation:

Answer:

Everything on the periodic table and Dark Matter all count as a form of "matter".

The correct option for the given question is (a) generally a strong bond. A hydrogen bond is a relatively weak bond that occurs between a hydrogen atom of one molecule and an electronegative atom, such as nitrogen, oxygen, or fluorine, of another molecule. However, compared to other intermolecular forces, hydrogen bonds are relatively strong.

Other options are incorrect because:

(b) does not occur in living organisms - This is incorrect because hydrogen bonds play a crucial role in the structure and function of biological molecules, such as DNA and proteins.

(c) forms between atoms having the same electronegativity - This is incorrect because hydrogen bonds form between an electronegative atom and a hydrogen atom, which has a partial positive charge due to its low electronegativity.

(d) is a specialized type of covalent bond - This is incorrect because hydrogen bonds are not covalent bonds, but rather a type of intermolecular force.

(e) does not require electron transfer - This is correct. Hydrogen bonds do not involve the transfer of electrons, but rather the attraction between partially charged atoms.

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Vinyl chloride (CH2=CHCl) is most likely the initial substance required to prepare the product after treatment with heated hydrochloric acid. A hydrochlorination procedure creates 1,2-dichloroethane as a byproduct by adding HCl across the vinyl chloride double bond.

Alkenes frequently undergo the hydrochlorination process, in which HCl is added across the double bond to produce a chloroalkane byproduct. In this instance, a vinyl chloride, which possesses a double bond between the carbon and chlorine atoms, is most likely the beginning substance. Warm HCl fractures the double bond, allowing the H and Cl atoms to add across the carbon atoms to create 1,2-dichloroethane as a byproduct. This response can be modelled as:

CH2 = CHCl + HCl ClCH2CH2Cl

All in all, this is a straightforward reaction that can be performed on a small scale in a lab or on a larger scale in industry to make 1,2-dichloroethane, which is utilised as a solvent and in the creation of vinyl chloride monomer.

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Explanation:

burning molecules release energy combine and release energy usually one of the two molecules is oxygen or something else chemically like it called an oxidizer when the molecules combine and release energy it is released in the form of heat and often light.

Answer:

the answer is 4

Explanation:

i took the test and got it right and i would recommend using quizlet it has these flash cards and the answers are there you just click on the one that says your question and it will say your answer on the back. It helps with most of my test! Hope this helps (:

Answer:

The correct answer is - Both are ratios of the amount of solute over the amount of solution.

Explanation:

Molarity is the number of moles of a substance in 1 liter of the solution. Another unit of the concentration, weight percentage, refers to the ratio of the mass of the solute (a dissolved substance) to the mass of the solution.

Molarity is to divide moles by liters, but the convention in mass percent is to divide grams by milliliters. If you prefer to think only in terms of liters (not milliliters), then simply consider mass percent as kilograms divided by liters.

Answer:

A. Both are ratios of the amount of solute over the amount of solution.

Hope this helps! :D

Explanation:

The balanced chemical equations are shown below:

1. Al (s) + 3HCI (aq) → AlCl3 (aq) + 3H2(g)

2. 2K (s) + 2H2O (1) → 2KOH (aq) + H2 (g)

3. 3Mg (s) + N2 (g) → Mg3N2 (s)

4. 2NaNO3 (s) → 2NaNO2 (s) + O2(g)

5. Ca(OH)2 (s) + 2H3PO4 (aq) → Ca3(PO4)2 (s) + 6H2O (1)

6. C3H8 (g) + 5O2 (g) → 3CO2 (g) + 4H2O (g)

7. 4NH3 (g) + 5O2 (g) → 4NO (g) + 6H2O (g)

8.  N2 (g) + 3H2 (g) → 2NH3 (g)

9. Na2CO3 (s) + 2HCI (aq) → 2NaCl (aq) + CO2 (g) + H2O (1)

10. C3H5OH (1) + 9O2 (g) → 3CO2 (g) + 4H2O (g)

11. 2NH3 (g) + 3CuO (s) → N2 (g) + 3Cu (s) + 3H2O (g)

Step 1. count the atoms on each side.

step 2. change the coefficient of one of the substances.

step 3.  count the numbers of atoms again and, from there,

step 4. repeat steps two and three until you have  balanced the equation.

A chemical equation is described as the symbolic representation of a chemical reaction in the form of symbols and chemical formulas.

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Answer:

A) day and night

Explanation:

please mark brainliest, i need it for a new rank<33

Answer:

You answer is A

Explanation:

Without the earth rotating on its axis, we wouldn't have day or night because we will be stuck facing the sun or the moon forever.

False because halogen group atoms' outermost electron does not have the ns2np7 electrical configuration.

Halogens are nonmetals. At room temperature, bromide is a liquid while fluoride, chlorine, & bromine are all gases. Iodine and astatine are solids.

The word "halogen" refers to substances that produce salts. All halogens have seven electrons within their valence shell, which causes them to react with metals quickly to produce salts. Halogens are the eighth group of elements as a result. Since the halogen elements already possess seven valence electrons, they only require one extra electron to complete a full octet. This characteristic makes them more reactive as non-metal groups.

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Answer:

Explanation:

Here, we want to get how the final digit in a measurement is obtained

Mathematically, the final digit can be obtained by estimation

Hence, we say that the value is uncertain

The final digit is obtained by a mark or between the last mark and the next mark in a measurement

Thus, we call this value uncertain since it is estimated

The balanced chemical equation for the reaction. In this case, we don't have the complete equation, but let's assume it is a decomposition reaction involving a compound X, producing [tax]N_{2} [/tax] and[tax]N_{ g}[/tax] The balanced equation should look like this the problem can be solved using the ideal gas law equation PV=north where P is pressure, V is volume, n is number of moles of gas, R is the gas constant and T is temperature in Kelvin.

The initial pressure of [tax]N_{23}g[/tax] is given as 0.270 atm. When the absolute temperature of [tax]N_ {23}g [/tax]is tripled, it completely decomposes into [tax]N_{2}g[/tax] and [tax]N_{O} g[/tax]. Since the volume of the container does not change, we can assume that the number of moles of gas remains constant. Let’s assume that there are n moles of [tax]N_{23} g\) initially in the container. Then after complete decomposition, there will be n moles of[tax]N_ {2} g[/tax] and n moles of [tax]N_ {g}[/tax]. Since we know that P1V1/T1 = P2V2/T2 for an ideal gas, we can use this equation to calculate the final pressure of the gas mixture. Let’s assume that T1 is the initial temperature and T2 is the final temperature after complete decomposition. Then we have P1V/nor = T1 P2V/nor = T2 Since V/nor is constant for a given amount of gas at a constant temperature and pressure, we can write: P1/T1 = P2/T2 Substituting values 0.270 atm / T1 = P2 / (3 * T P2 = 0.810 atm Therefore, the final pressure of the gas mixture after complete decomposition is 0.810 atm.

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The combination of the given components yields -16.5.

To find the combination AV​/2 - 2By​ + 5CV​,

We need to substitute the given components of vectors A, B, and C into the expression.

Given:

Ax​ = 1.0

Ay​ = 2.0

Bx​ = 3.5

By​ = -4.0

Cx​ = -5.0

Cy​ = 6.

Substituting these values into the expression:

AV​/2 - 2By​ + 5CV​ = (Ax/2) - 2(By) + 5(Cx)= (1.0/2) - 2(-4.0) + 5(-5.0)

= 0.5 + 8.0 - 25.0

= -16.5

Therefore, the combination of the given components yields -16.5.

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To convert an aldehyde to a carboxylic acid, oxidation of the aldehyde functional group is required.

There are several reagents that can be used for this conversion:

1. Strong Oxidizing Agents:

  - Potassium permanganate (KMnO4): In the presence of acidic conditions, KMnO4 can oxidize aldehydes to carboxylic acids.

  - Chromic acid (H2CrO4): It is a strong oxidizing agent that can convert aldehydes to carboxylic acids.

2. Tollens' Reagent:

  Tollens' reagent, also known as silver mirror reagent, is a solution of silver nitrate (AgNO3) and ammonia (NH3) in water. It can oxidize aldehydes to carboxylic acids under mild conditions. It produces a silver mirror on the inner surface of the reaction vessel.

3. Jones Reagent:

  Jones reagent consists of a solution of chromium trioxide (CrO3) in diluted sulfuric acid (H2SO4). It is a strong oxidizing agent that can convert aldehydes to carboxylic acids.

These are some commonly used reagents to convert aldehydes to carboxylic acids through oxidation. The choice of reagent may depend on factors such as reaction conditions, desired selectivity, and other functional groups present in the molecule.

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Answer:

15.998 grams

Explanation:

Pls, choose me as brainliest!

Answer:  The correct answer is 15.999 grams.

Because I tried the one at the top it was wrong, but my answer is right!!!

Explanation:

Stirring allows hot liquid to reach the surface much faster than unassisted convection

Answer:

The dependent variable is the chicken weight

Explanation:

The experiment was carried out to determine the relationship between the size of chickens and the food with which they are fed.

However, to determine the size of the chickens, the weight of the chickens were taken

The two different experimental treatment was administered separately to the two groups of experimental units

The independent variables are;

1) The type of treatment administered which could be either;

i) Feeding the chickens with corn

ii) Feeding the chickens with rice

2) The duration for which the treatment was administered

The dependent variables is the weight of the chicken after being subjected to one of the two experimental treatments.

Answer: The pressure of gas is inversely proportional to volume of the gas.

Explanation: A pressure-volume graph for gases demonstrates the relationship between pressure and volume. When the volume decreases, the pressure increases (inverse relationship) and vice versa. The graph visually represents the behavior of gases during compression or expansion processes. The slope of the line on the graph indicates the gas's compressibility. Analyzing the graph provides insights into gas properties and processes, such as Boyle's Law or the ideal gas law, in a concise and graphical manner.

Therefore the answer is pressure decrease as volume increase.

Approximately 1.6% of the Krypton-85 produced from nuclear testing in 1956 remained radioactive in 2016.

The half-life of Krypton-85 is 10 years, which means that after 10 years, half of the original amount of radioactive material will decay. Therefore, we can use the formula:

N(t) = N0(1/2)^(t/T)

where N(t) is the amount of radioactive material remaining after time t, N0 is the initial amount of radioactive material, T is the half-life, and ^(t/T) represents the number of half-lives that have occurred.

In 1956, there was a significant amount of Krypton-85 produced from nuclear testing.

Let's assume that this amount was 100%. To find in 2016, the amount of Krypton-85 remained radioactive;

We can calculate this using the formula above:

N(60) = 100(1/2)^(60/10)

         = 100(1/2)^6

         = 100(0.015625)

         = 1.5625%

Therefore, the answer is d. 1.6%.

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Answer:

A titration is a technique where a solution of known concentration is used to determine the concentration of an unknown solution. Typically, the titrant (the know solution) is added from a buret to a known quantity of the analyte until the reaction is complete