If the reaction of CO + NO2 <--> CO2 + NO which of following changes would result in formation of more products at equlibrium. a.removing Co from the reaction b. adding NO2 to the reaction c. increasing the pressure d. adding CO2 to the reaction

Answer:

A polymer is any of a class of natural or synthetic substances composed of very large molecules, called macromolecules, which are multiples of simpler chemical units.  Polymers make up many of the materials in living organisms and are the basis of many minerals.

Explanation:

Explanation:

The first man-made polymers were actually modified versions of these natural polymers. Celluloid, the stuff from which silent-movie film was made, was a plastic created from chemically modified cellulose. The first completely synthetic polymer (that is, made by people through chemical synthesis), invented in the early years of the twentieth century, was Bakelite: a plastic made by reacting phenol and formaldehyde under pressure at high temperatures.

# be careful #

The growth of the new plant depicts the asexual reproduction characteristic. The characteristic that describes the growth of the new plant in Stephan's mother cutting a twig from a rose bush and planting it in the soil is asexual reproduction.

Asexual reproduction is the mode of reproduction by which organisms generate offspring that are identical to the parent's without the fusion of gametes. Asexual reproduction is a type of reproduction in which the offspring is produced from a single parent.

The offspring created are clones of the parent plant, meaning they are identical to the parent.The new plant in Stephan’s mother cutting a twig from a rose bush and planting it in the soil depicts the process of asexual reproduction, which is the ability of a plant to reproduce without seeds. In asexual reproduction, plants can reproduce vegetatively by cloning themselves using their roots, bulbs, or stems.

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The net ionic equation for this gas evolution reaction is H+(aq) + SO32-(aq) SO2(g) + H2O, while the balanced molecular equation is 2HBr(aq) + K2SO3(aq) SO2(g) + 2H2O(l) + 2KBr(aq) (l).

The reaction's chemical formula is K2CO3(aq)+2HBr(aq)2KBr(aq)+CO2(g)+H2O. (l) Strong electrolytes in the process, K2CO3, HBr, and KBr totally dissociate in water to generate their corresponding ions.

A salt (the KBr) and water will be created when the HBr and KOH interact. While balancing this equation, make careful to count both hydrogen atoms on the reactants side.

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The component which is least soluble in gasoline is 2.candle wax. So, correct option is 2.

The octane rating still up in the air by blending fills from just ordinary heptane and iso-octane (2,2,4-trimethylpentane, an exceptionally extended octane), and relegating hostile to thump evaluations of zero for typical heptane and 100 for unadulterated iso-octane. The counter thump rating of this combination would be equivalent to the level of iso-octane in the blend. Various isomers of octane can add to a lower or higher octane rating. For instance, n-octane (the straight chain of 8 carbon molecules with no stretching) has a - 20 (negative) Exploration Octane Rating, while unadulterated iso-octane has a RON rating of 100. A few energizes have an octane rating higher than 100, outstandingly those containing methanol or ethanol.

Candle wax exist in solid state.On dissolving candle wax in octane it will least dissolve becuase of inert reaction between octane and candle wax.

Hence,correct answer is 2.

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Barrier islands are not permanent because the wind and the waves are constantly redistributing the sand.

Barrier islands are particularly flat or lumpy sand regions that are formed parallel to the mainland shore by wave and tide action. They typically appear in groups called chains, which can range in size from a few to more than a dozen islands.

They are called "barriers" because they act as a physical barrier, protecting the mainland from the effects of strong waves, storm surges, and flooding. Barrier islands are formed by a variety of processes, including longshore drift, sediment deposition, and sea level changes.

Barrier islands typically consist of sandy beaches on their seaward side and marshes, lagoons, or dunes on their landward side.

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Answer:

HE

Explanation:

HE is a noble gas

Answer:

6.5

Explanation:

half of 5 is 2.5, half of 8 is 4. 2.5+4=6.5

:)

From the given graph, if we change from a moderately acidic environment ( pH near 6) to a basic environment, the peroxidase activity will decrease. Therefore, option (A) is correct.

pH can be described as the negative logarithm of hydrogen ion (H⁺) concentration. Mathematically, pH is generally inversely proportional to the concentration of hydrogen ions (H⁺).

pH = -log ([H⁺])

In chemistry, pH is a scale used to determine the acidity or basicity of an aqueous solution. Acidic solutions are calculated to have lower pH values than basic or alkaline solutions.

The pH scale possesses ranges from 0 to 14 while pH 7.0 is neutral. A low pH (about 1 or 2) is acidic and a high pH (12 or 14) is basic.

When we change the moderately acidic environment to a basic environment. We actually increase the pH value in the graph showing the peroxidase activity decreases when pH increases more than 6.

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Answer:dang

Explanation:

Approximately 166.67 mL of water needs to be evaporated from 250 mL of 1 M Ca(OH)2 to make it 3 M.

The relationship between the initial and final concentrations and volumes must be taken into account.

Given: Initial concentration \((C^1) = 1 M Initial volume (V^1) = 250 mL\)

\((C^2) = 3 M final concentration\)

We can use the equation:

\(C^1 * V^1 = C^2 * V^2\)

Where:

\(V^2\)is the final volume of the solution

Rearranging the equation to solve for V2:

\(V^2 = (C^1 * V^1) / C^2\)

Substituting the given values:

\(V^2 = (1 M * 250 mL) / 3 M\)

\(V^2 = 250 mL / 3\)

\(V^2\) ≈ \(83.33 mL\)

To find the amount of water that needs to be evaporated, we subtract the final volume from the initial volume:

Amount of water to be evaporated = \(V^1 - V^2\)

Amount of water to be evaporated = 250 mL - 83.33 mL

Amount of water to be evaporated ≈ 166.67 mL

Therefore, approximately 166.67 mL of water needs to be evaporated from 250 mL of 1 M Ca(OH)2 to make it 3 M.

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Answer:

molarity of solution = 0.514

Explanation:

Answer:

Let it be x

\({ \tt{ (oxidation \: state \: of \: nitrogen) + 2x = overall \: charge}} \\ { \tt{ - 4 - 2 x = 0}} \\ { \tt{2x = - 4}} \\ { \tt{x = - 2}}\)

To graph the function g(x) = f(-x), you can start with the graph of f(x) and then reflect it about the y-axis.

To find the graph of the function g(x) = f(-x), we can start with the graph of the function f(x) and then reflect it about the y-axis.

If the graph of f(x) is symmetric with respect to the y-axis, meaning it is unchanged when reflected, then g(x) = f(-x) will have the same graph as f(x).

However, if the graph of f(x) is not symmetric with respect to the y-axis, then g(x) = f(-x) will be a reflection of f(x) about the y-axis.

In either case, the resulting graph of g(x) = f(-x) will be symmetric with respect to the y-axis.

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Answer:

The correct answer is 0.15 × 10⁻³ M.

Explanation:

C₆H₈O₇ is the molecular formula of citric acid. The mass of the one mole of the substance that comprise Avogadro's no of molecules is termed as the molar mass of the substance.  

The molar mass of the citric acid (C₆H₈O₇) will be,  

6 × atomic mass of carbon + 8 × atomic mass of hydrogen + 7 × atomic mass of oxygen = 6×12 + 8×1 + 7×16 = 192. Thus, the molar mass of citric acid is 192 g/mol.  

The value of the solution given in the question is 8 L.  

The mass of citric acid given is 0.24 g or 240 mg, which can also be written as 240/1000 g or 240 × 10⁻³ g.  

The number of moles can be calculated by using the formula = mass / molar mass. Thus, by putting the values we get,  

= 240 × 10⁻³ g / 192 g/mol

= 1.25 × 10⁻³ mol

The number of moles of the solute present in the 1 liter of the solution is termed as the molarity of the solution. The formula of molarity or M is,  

= no of moles of solute / volume of solution in L

Now putting the values we get,  

= 1.25 × 10⁻³ mol / 8 L

= 0.156 × 10⁻³ M

Hence, the molarity of citric acid in the given solution is 0.15 × 10⁻³ M

The chunks of fluid magma that fall back to the surface to feed a lava flow can give rise to two different types of surfaces: rough and smooth.

A rough lava surface is often associated with a type of lava called 'aa' (pronounced "ah-ah"). Aa lava flows are characterized by a jagged and clumpy texture. This occurs because the chunks of magma, known as clinkers, are fragmented and accumulate on top of the flow. As the flow advances, the clinkers are pushed forward, creating a rough and uneven surface. Aa lava flows tend to be slower-moving and can be hazardous to walk on due to their rough texture.On the other hand, a smooth lava surface is typically associated with a type of lava known as 'pahoehoe' (pronounced "pah-hoy-hoy"). Pahoehoe lava flows are characterized by a smooth, undulating surface with a rope-like or ropy texture. The fluid magma of pahoehoe lava allows it to flow more freely, resulting in a surface that appears molten and smooth. Pahoehoe flows can travel greater distances compared to aa flows and are generally easier to traverse.The type of lava surface, whether rough or smooth, depends on various factors such as the viscosity of the magma, eruption style, and the rate of cooling during the lava flow.

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Answer:

Explanation:

40/ 180.2 x (-16 / 1 mole glucose)=-3.6 KJ

Answer:

2+2 kaszkqkq

Explanation:

Alkyne chemistry refers to the branch of chemistry that deals with triple bonds between carbon atoms. Due to the presence of pi-electrons that are not tightly bound, alkynes undergo addition reactions.

Alkynes have a triple bond, which makes it possible to add halogens, water, and other substances to them through an addition reaction. A series of steps are used to create addition goods. The development of addition products is caused by the stability of vinylic cations. Asymmetric alkynes must adhere to Markovnikov's rule in order to conduct addition reaction. Below are a few addition reactions of alkynes that are explained: Alkenes are created when alkynes react with dihydrogen in the presence of catalysts like Pt/Pd/Ni. Alkanes are created when the produced alkenes further react with dihydrogen.

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Answer:

Tings that effect weather is basically the following:

Answer:

Sodium hydroxide reacts with iron(III) chloride to produce iron(III) hydroxide and sodium chloride.

Hope this helps plz hit the crown :D

Answer:

We can use the formula for heat lost by a substance to calculate the final temperature:

Q = m * c * ΔT

where Q is the heat lost, m is the mass of the substance, c is the specific heat capacity of the substance, and ΔT is the change in temperature.

In this case, we know the values of Q, m, and c, and we need to find ΔT. Rearranging the formula, we have:

ΔT = Q / (m * c)

Substituting the given values, we get:

ΔT = 9750 J / (335 g * 4.18 J/(g*°C)) ≈ 6.9 °C

Therefore, the final temperature of the water is:

65.5 °C - 6.9 °C ≈ 58.6 °C

So the final temperature of the water is approximately 58.6 °C.

The final temperature of the water is approximately 58.5°C.

To find the final temperature of the water, we first need to understand that the heat lost by the water is calculated using the formula q = mcΔT, where 'q' is the Heat Transfer, 'm' is the mass of the water, 'c' is the specific heat of the water, and 'ΔT' is the change in temperature.

First, rearrange the formula to find ΔT = q/(mc).

Then, insert the given values (q = -9750 J, m = 335 g, c = 4.18 J/g°C).

The negative sign denotes heat loss.

You will find ΔT is approximately -7°C.

This is the amount the temperature decreases.

Subtract ΔT from the initial temperature of the water (65.5°C - 7°C), to get the final temperature of approximately 58.5°C.

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I hope the attached answer of image helps you.

By Benjemin

Explanation:

To calculate the heat gained by nickel, we can use the formula:

q = m * c * ΔT

where q is the heat gained, m is the mass of the nickel, c is the specific heat of nickel, and ΔT is the change in temperature.

Given:

- Mass of nickel, m = 31.4 g

- Specific heat of nickel, c = 0.443 J/g · °C

- Change in temperature, ΔT = 64.2 °C - 27.2 °C = 37.0 °C

Substituting the values into the formula, we get:

q = (31.4 g) * (0.443 J/g · °C) * (37.0 °C)

Simplifying the calculation, we get:

q = 584 J

Therefore, the heat gained by nickel when 31.4 g of nickel is warmed from 27.2 °C to 64.2 °C is 584 J.

First, we need to calculate the heat absorbed by the water:

q = m × c × ΔT

where q is the heat absorbed, m is the mass of water, c is the specific heat of water, and ΔT is the change in temperature.

q = 145 g × 4.184 J/g°C × (63.0°C - 24.5°C)

q = 16394.12 J

Next, we need to calculate the amount of substance of MgBr₂ that was added to the water:

n = m/MW

where n is the amount of substance, m is the mass of MgBr₂, and MW is the molecular weight of MgBr₂.

MW(MgBr₂) = 184.11 g/mol

n = 23.2 g ÷ 184.11 g/mol

n = 0.1259 mol

Finally, we can calculate the enthalpy of solution, ΔH, using the following formula:

ΔH = q ÷ n

where ΔH is the enthalpy of solution.

ΔH = 16394.12 J ÷ 0.1259 mol

ΔH = 130233.72 J/mol

Converting to kilojoules per mole (kJ/mol):

ΔH = 130.23 kJ/mol

Therefore, the enthalpy of solution for dissolving magnesium bromide in water is 130.23 kJ/mol.

The enthalpy of solution of magnesium bromide in water is calculated using the formula for heat transfer and taking into account the mass of the solvent, the specific heat of the solvent, and the change in temperature. The result is 186 kJ/mol.

To calculate the enthalpy of solution of magnesium bromide (MgBr₂), we need to use the formula for heat transfer: Q = m * c * ΔT, where m is the mass of the solvent (water), c is the specific heat of the solvent, and ΔT is the change in temperature.

In our case, the mass of water is 145g, the specific heat of water (c) is 4.18 J/g°C, and the change in temperature (ΔT) is 63.0 °C - 24.5 °C = 38.5 °C.

Using the formula Q = m * c * ΔT, we can calculate the heat transferred to the water: Q = 145g * 4.18 J/g°C * 38.5 °C = 23432 J or 23.432 kJ. This is the heat absorbed by the water.

The enthalpy of the solution is defined as the amount of heat absorbed (or released) when one mole of a substance is dissolved in water. So, to find the enthalpy of solution, we first need to convert the grams of MgBr₂ to moles. The molar mass of MgBr₂ is 184.11 g/mol, so 23.2 g of MgBr₂ is 23.2 g / 184.11 g/mol = 0.126 mol.

Now we can calculate the enthalpy change by dividing the heat absorbed by the moles of the solute: ΔH = Q / n = 23.432 kJ / 0.126 mol = 186 kJ/mol. Therefore, the enthalpy of solution for magnesium bromide in water is 186 kJ/mol.

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The molarity of potassium hydroxide in the resulting solution is 0.129 M.

Molarity of a substance refers to the concentration of a substance in solution, expressed as the number of moles of solute per litre of solution.

According to this question, a student weighs out a 2.17g sample of KOH, transfers it to a 300. mL volumetric flask, adds enough water to dissolve it and then adds water to the 300. mL tick mark.

No of moles of KOH = 2.17g ÷ 56.11g/mol = 0.039 moles

Molarity = 0.039 moles ÷ 0.3L = 0.129 M

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Solution :

\($Fe(OH)_3+3CH_3COOK \rightarrow Fe(CH_3COO)_3 + 3KOH$\)

(iron          (potassium

hydroxide)     acetate)

Number of moles of \($Fe(OH)_3 = \frac{\text{mass of }Fe(OH)_3}{\text{molar mass of }Fe(OH)_3}$\)

                                                \($=\frac{2.143 \ g}{106.867 \ g/mol}$\)

                                                = 0.02005 mol

Number of moles of \($CH_3COOK = \frac{\text{mass of }CH_3COOK}{\text{molar mass of }CH_3COOK}$\)

                                                \($=\frac{5.478 \ g}{98.15 \ g/mol}$\)

                                                = 0.0585 mol

Since 1 mol of \($Fe(OH)_3$\) reacts with 3 mols of \($CH_3COOK$\)

Therefore, number of moles of \($CH_3COOK$\) reacted \($=\frac{0.0585}{3 }$\) mol

                                                                                    = 0.0195 mol

Therefore the limiting reagent is \($CH_3COOK$\) and hence the number of moles of \($Fe(CH_3COO)_3$\) produced is 0.0195 mol

Amount of \($Fe(CH_3COO)_3$\)  produced = moles x molar mass

                                                           = 0.0195 moles x 232.98 g/mol

                                                          = 4.5431 g

As per chemical changes, a color change can be seen when a substance change into a new substance.

Chemical changes are defined as changes which occur when a substance combines with another substance to form a complete  new substance.Alternatively, when a substance breaks down or decomposes to give new substance it is also considered to be a chemical change.

There are several characteristics of chemical changes like those of  change in color, change in state , change in odor and even change in composition . During chemical change there is also formation of precipitate an insoluble mass of substance or even evolution of gases.

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