Butane gas reacts with oxygen gas to give carbon dioxide gas and water vapor (gas). If you mix butane and oxygen in the correct stoichiometric ratio, and if the total pressure of the mixture is 330 mmHg, what is the pressure (in mmHg) of water vapor after the reaction has completed (temperature and volume do not change).

The pH of the buffer solution formed by the weak base NH3 and its conjugate acid NH4+ is 9.32.

Therefore, the correct answer is option (3).

The buffer solution is formed by the weak base NH3 and its conjugate acid NH4+.

The equation for the reaction is: NH3(aq) + HCl(aq) -> NH4Cl(aq)

The concentrations of NH3 and NH4+ are the same, and the concentration of HCl is smaller. Therefore, the pH of the buffer will be closer to the pKa of the weak acid NH4+. The pKa of NH4+ is 9.24.

To calculate the pH of the buffer solution, we can use the Henderson-Hasselbalch equation:

pH = pKa + log([NH3]/[NH4+])

At equilibrium, the concentration of NH3 and NH4+ will be reduced by half, so:

[NH3] = 0.06 M / 2 = 0.03 M

[NH4+] = 0.05 M / 2 = 0.025 M

Substituting these values in the equation:

pH = 9.24 + log(0.03/0.025

pH = 9.32

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Only one monobromination products is expected from bromination of the compound:

When a substance undergoes bromination, bromine is added to the compound as a result of the chemical reaction. After bromination, the result will have different properties from the initial reactant.

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The correct option is (B) No, the solution is too dilute and would have a %T over 90% where Beer's Law does not apply.

The solution is too dilute, it will have lower than desired concentration of the desired substance. To make solution more concentrated, more of the desired substance must be added to the solution. This increases the concentration of the desired substance, allowing it to be more effective in the intended application.

The amount of the desired substance must be adjusted according to the desired concentration of the solution. In addition, the amount of other substances in the solution must be considered to ensure the desired concentration is not too high or too low. Too high concentration could produce an undesired reaction, while too low a concentration would decrease the efficiency of the desired reaction.

Full question:

A set of dilutions ranging in concentration from 1x10-2 M to 2x10-2 M are used to prepare a standard curve. Transmittances of the dilutions range from 12% to 88%. Could this plot be used to determine the concentration of a sample that had a concentration of 1.0x10-3 M?

A) No, the solution is too dilute and would have a %T under 10% where Beer's Law does not apply.

B) No, the solution is too dilute and would have a %T over 90% where Beer's Law does not apply.

C) Yes, simply extend the standard curve.

D) No, the solution is too concentrated and would have a %T over 90% where Beer's Law does not apply.

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The final volume of the balloon is 0.61 L

The Ideal gas law is the equation of state of a hypothetical ideal gas. It is a good approximation to the behaviour of many gases under many conditions, although it has several limitations. The ideal gas equation can be written as-

                       PV = nRT

where,

P = Pressure

V = Volume

T = Temperature

n = number of moles

Given,

Initial volume = 0.55 L

Initial Pressure = 1 atm

Final pressure = 0.9 atm

P₁V₁ = P₂V₂

1 × 0.55 = 0.9 × V₂

V₂ = 0.61 L

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The Ka of the acid is approximately 1.78 × 10^-5.

To solve this problem, we can use the relationship between the pH and the acid dissociation constant (Ka) of the acid:

pH = -log[H3O+]

Ka = [A-][H3O+] / [HA]

where [HA], [A-], and [H3O+] are the concentrations of the undissociated acid, the conjugate base, and the hydronium ion, respectively.

We are given a 2.5 M solution of the acid, which means that the initial concentration of HA is also 2.5 M. We can use the pH to calculate the concentration of H3O+:

pH = 1.20 = -log[H3O+]

[H3O+] = 10^-1.20 = 6.31 × 10^-2 M

At equilibrium, some of the HA will dissociate into A- and H3O+, but we don't know the extent of this dissociation or the equilibrium concentrations of the species. However, we can assume that the dissociation is small compared to the initial concentration of HA, which is a common assumption for weak acids.

If we let x be the concentration of A- and H3O+ at equilibrium, then we can write the equilibrium concentrations of the species in terms of x:

[HA] = 2.5 M - x

[A-] = x

[H3O+] = x

Substituting these expressions into the expression for Ka, we get:

Ka = [A-][H3O+] / [HA]

Ka = (x)(x) / (2.5 M - x)

Since we assume that x is small compared to 2.5 M, we can make the approximation 2.5 M - x ≈ 2.5 M. This simplifies the expression for Ka:

Ka = x^2 / 2.5 M

Now we can solve for x in terms of Ka:

x = sqrt(Ka × 2.5 M)

Substituting this expression for x back into the equation for Ka, we get:

Ka = x^2 / 2.5 M

Ka = (Ka × 2.5 M) / 2.5 M

Ka = sqrt(Ka × 2.5 M)^2 / 2.5 M

Ka = (Ka × 2.5 M) / (6.31 × 10^-2 M)

Solving for Ka, we get:

Ka = (6.31 × 10^-2 M) × (10^-1.20) / 2.5 M

Ka = 1.78 × 10^-5

Therefore, the Ka of the acid is approximately 1.78 × 10^-5.

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Option (b) is correct. Amides are the derivative of amines and carboxylic acids.

Amides are the derivatives of carboxylic acid and amines. A carboxylic acid contains the  −COOH  functional group, and in an amide the  −OH  part of that group is replaced by an  −NH2  group. So, amides contain the  −CONH2  group. Any member of either of two classes of nitrogen-containing compounds related to ammonia and amines. The covalent amides are neutral or very weakly acidic substances formed by replacement of the hydroxyl group (OH) of an acid by an amino group NR2, in which R may represent a hydrogen atom or an organic combining group such as methyl, CH3. Among the amides of commercial importance are acetamide and dimethylformamide HCON(CH3)2, which are used as solvents, the sulfa drugs, and the nylons.

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The error caused by forgetting to zero the balance each time the mass of calcium carbonate is measured is known as the cumulative systematic error or the additive systematic error.

When the balance is not zeroed before each measurement, it introduces a constant offset or bias to the measurements. This means that the measured masses will consistently be either higher or lower than the true values. Over multiple measurements, this error accumulates and becomes systematic, resulting in a consistent overestimation or underestimation of the mass of calcium carbonate.

The systematic error does not affect the precision of the measurements as the repeated measurements will likely yield similar values due to the consistent bias. However, it does introduce a significant deviation from the true values, impacting the accuracy of the experiment.

To minimize this error, it is crucial to zero the balance before each measurement, ensuring that the balance is calibrated and any constant offsets are eliminated. This allows for accurate and reliable measurements in the investigation of the rate of reaction of calcium carbonate with acid.

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The equilibrium concentration, Kc for the reaction is: 0.088.

A chemical reaction is considered to be in a state of chemical equilibrium when both the reactants and the products are in a concentration that does not change over time anymore. The forward response rate and the backward reaction rate are equal in this condition.

The presence of the chemicals in equal proportions is not a requirement for equilibrium. The fact that both the forward and backward reactions proceed at the same pace indicates that the reaction has progressed to a stage where the concentrations of the reactant and product remain constant throughout time.

Kc= concentration  of  product  divided  by  concentration   of  reactant

NO +  NO₂  →  N₂O₃

or, Kc = N₂O₃ /  (No) (NO₂)

or, Kc= ( 1.3 )/{ (3.9) ×(3.8) }

or, Kc=0.088

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Answer:

evaporation

Explanation:

Answer:

Boiling

Explanation:

When a substance transitions from liquid to gas, it's called evaporation if it's on the surface, and boiling if it's all throughout the liquid.

Picture boiling water in a pot: it starts on the bottom, and the bubbles go toward the top. Evaporation starts on the surface.

Hydrochloric acid or Hcl

Answer:

Magnesiumoxide

Explanation:

I don't know

Answer:

Explanation:

Good Example of a Star- The sun, Star Clusters, The North Star

Bad Examples of a Star-Earth, Galaxies, Solar Systems

Examples of stars: Sun, Stars.

Non-examples of stars: Earth, Moon, Planets.

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Answer:

1.VOLUME– The amount of space an object takes up. Basic Unit (SI Unit) for Solids – Cubic Meter, m3. LENGTH/DISTANCE – The measurement between two points.

2.one particle per cubic meter.

3.it means it is heavier

4.In a liquid the particles are still close together but a little further apart than in a solid.

5.In gases the particles are much further apart than in solids or liquids.

Explanation:

thats all i can type lol

Answer: Microscope

Explanation: This is a kid answering :)

Explanation:

Plugging into the following equations will give you the answer (the answer is the attached image):

\(pH+pOH=14\)

\(pH=-log_{10}([H^+])\)

\(pOH=-log_{10}([OH^-])\)

\([H^+][OH^-]=10^{-14}\)

\([H^+]=10^{-pH}\)

\([OH^-]=10^{-pOH}\)

Hot water stays on the top of cold water and doesn't mix. This is because of difference in DENSITY of water at different temperatures.

When we heat water, then the atoms gain energy from the heat and start moving away from each other. Now, when the atoms move away from each other than the (mass per unit volume) i.e. the density decreases. This makes water lighter.

When the temperature is less i.e. cold water then the atoms are more compactly packed and therefore the density of water is more at lower temperatures.

Since, hot water is lighter than cold water that is why it stays on top of the cold water.

Answer:

1.503 x 10^23

Explanation:

your question was how many atoms, so you have to multiply that number which is how many molecules by 8 atoms per molecule of sulphur. So you get 1.503 x 10^23 atoms in 8 grams of sulfur.

hope this helps. please mark me brainliest

Volumes of ethanol and water are in the solution : 30 mL and 70 ml

The concentration of a substance can be expressed in several quantities such as moles, percent (%) weight/volume,), molarity, molality, parts per million (ppm) or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent.

Percent Volume (% v/v) : volume (ml) of solute/100 ml of solution ⇒ ratio of volume of the solute to total volume of the solution

\(\tt \%solute=\dfrac{solute~volume}{solution~volume}\times 100\%\).

30% ethanol ⇒30% etanol, 70% water

In 100 mL solution :

\(\tt Ethanol=30\%\times 100~mL=30~mL\\\\Water=70\%\times 100~mL=70~ml\)

The rate of consumption of O (g) if water vapor is consumed at a rate of 1.60 x 10⁻¹⁰ M/s is 8.0 * 10⁻⁹ M/s.

The rate of a chemical reaction is known as the reaction rate or rate of reaction. It is proportional to the rise in product concentration per unit of time and the fall in reactant concentration per unit of time.

Considering the given equation:

The equation of the reaction is: O (g) + H₂O (g) ---> 2 •OH (g)

The rate of the consumption of water vapor will be twice the rate of consumption of O (g).

Water vapor is consumed at a rate of 1.60 x 10⁻¹⁰ M/s.

Hence, O (g) will be consumed at a rate of 0.5 * 1.60 x 10⁻¹⁰ M/s = 8.0 * 10⁻⁹ M/s.

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Answer:

A

Explanation:

kinetic and mass are directly proportional

so if one increases the other does to

The relationship between the kinetic energy of an object and the mass of an object is Kinetic energy gets bigger at the same rate as the mass of an object.

The energy that an object has as a result of motion is known as kinetic energy. It is described as the effort required to move a mass-determined body from rest to the indicated velocity. The body keeps the kinetic energy it acquired throughout its acceleration unless its speed changes.

Potential energy can be moved into motion by a variety of catalysts, including gravity and chemical reactions, to release kinetic energy. As a result, kinetic energy rises and potential energy falls. Mechanical energy is the sum of all kinetic and potential energy.

The capacity to perform work is arguably the most significant characteristic of kinetic energy. Force acting on an object while it is moving is referred to as work. Energy and work are interchangeable because of their tight relationship.

Thus, option A is correct.

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The option that is an extensive property of water is volume. That is option B.

An extensive property of water is defined as those properties that depends on the amount of water that is taken into consideration.

For example, Volume can be said to be an extensive property of water because the amount of water in the bucket is different from the amount of water in a tablespoon.

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Complete question:

Which of the following is an extensive property of water?

a.) temperature

b.) volume

c.) refractive index

d.) Viscosity

The amount in grams of bromine monochloride must form is 37.9 grams

To solve the problem, we have to determine which element is the limiting reactant, and calculate how much product is produced based on the amount of the limiting reactant. The balanced chemical equation is as follows:

Br₂ + Cl₂ ⟶ 2BrCl

The molecular weight of Br₂ is 159.808 g/mol.  The molecular weight of Cl₂ is 70.90 g/mol.  The molecular weight of BrCl is 112.36 g/mol.

The molar masses of the reactants and products are:

Bromine (Br₂) = 27.1 g / 159.808 g/mol = 0.1698 mol

Chlorine (Cl₂) = 12.0 g / 70.90 g/mol = 0.1690 mol

Bromine Monochloride (BrCl) = ?

We can see from the balanced chemical equation that 1 mole of Br₂ reacts with 1 mole of Cl₂ to produce 2 moles of BrCl.  The limiting reactant will be the one that has the smallest number of moles. In this case, that is Cl₂. Therefore, Cl₂ is the limiting reactant.

Because 1 mole of Cl₂ reacts with 1 mole of Br₂, we need 0.1690 mol of Br₂ to react with 0.1690 mol of Cl₂.

Using the mole ratio of 1:2, we can determine the amount of BrCl produced:

0.1690 mol Cl₂ x (2 mol BrCl / 1 mol Cl₂) x (112.36 g / 1 mol) = 37.9 g BrCl

Therefore, 37.9 grams of bromine monochloride must form.

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Answer:

About 5.8 trillion miles is equal to 1 light year

so (5,878,600,000,000 miles)*(1.21 light-years) = 7,113,106,000,000 miles

[H₃O⁺]=4.4 x 10⁻⁴

pH=3.357

[OH⁻] = 2.28 x 10⁻¹¹

Given

HNO3 concentration = 0.00044 M

Required

[H3O+],[OH-] and the pH

Solution

HNO₃ = strong acid

HNO₃ ⇒ H₃O⁺ + NO₃⁻

[H₃O⁺]=[HNO₃]=4.4 x 10⁻⁴

For strong acid pH=-log[H₃O⁺]

pH=-log 4.4 x 10⁻⁴ = 4-log 4.4 =3.357

pOH+pH=pKw

pOH+3.357=14

pOH=14-3.357=10.643

pOH=-log[OH⁻]

\(\tt [OH^-]=10^{-10.643}=2.28\times 10^{-11}\)

Answer: Carbon dioxiode+water+sunlight=glucose+oxygen

6CO2 +  6H2O + sunlight  —>  C6H12O6  + 6O2

Explanation:

A decomposition reaction is a type of chemical reaction where a compound breaks down into two or more simpler substances. This process is typically induced by heat, light, or an electrical current.

In a decomposition reaction, the reactant compound typically breaks down into two or more products, which can be elements or simpler compounds.

There are various types of decomposition reactions, such as thermal decomposition, electrolytic decomposition, photolytic decomposition, and catalytic decomposition, depending on the type of energy that is used to initiate the reaction.

For example, the decomposition of hydrogen peroxide (H2O2) into water (H2O) and oxygen (O2) is a decomposition reaction:

\(2H_2O_2 --- > 2H_2O + O_2\)

Thus, this is decomposition reaction.

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\( \huge \red {Answer} \)

Answer:

36 eggs

Explanation:

12 eggs in each carton

12 + 12 + 12 = 36 eggs

or 3 * 12 = 36 eggs

Hope this helps, have a nice day/night! :D

The name of the compound with the chemical formula Br2F8 is dibromo octafluorine.

The chemical formula of a compound shows the type and proportion of each element that makes up the chemical compound.

According to this question, a compound with chemical formula Br2F8 is given. The compound consists of the following:

Therefore, the name of the compound with the chemical formula Br2F8 is dibromo octafluorine.

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d= m/v

1.0=m/1cm^3

1.0×1cm^3=m

m=1kg/cm^3