for the following reaction, 3.67 grams of oxygen gas are mixed with excess carbon (graphite) . the reaction yields 3.74 grams of carbon dioxide .

The \(BrO_3^-\) ion is named bromate, which is an anion derived from the oxoacid \(HBrO_3\). The name of the oxoacid \(HBrO_3\) is bromic acid.

Here's the breakdown of the terms:
- Ion: An atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
- Bromate: The \(BrO_3^-\) ion, an anion containing bromine and oxygen.
- Oxoacid: An acid containing oxygen, along with another element and hydrogen.

The hydrogen atom is bonded to one of the oxygen atoms via a single covalent bond. This makes the bromic acid a member of the oxoacid family, which consists of acids that contain oxygen and hydrogen atoms.
So,\(HBrO_3\) is an oxoacid with the bromate ion (\(BrO_3^-\)) and hydrogen (H⁺), and its name is bromic acid.

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Answer:

A mixture of molecules is a group of molecules in which there are multiple different elements and atoms, that are in either fixed proportions or random. There are heterogeneous and homogenous mixtures.

Explanation:

Answer:

d, All of them are found in Earth's atmosphere in small amounts

Answer:

The Soufriere Hills volcano has formed where magma is actively seeping up from the mantle to the surface. Soufriere Hills volcano is part of an island chain that formed at the boundary where two oceanic plates converge. One plate subducts beneath the plate with the island chain, and the subducting plate melts in the mantle and creates magma that rises and fuels the Soufriere Hills volcano.

Explanation:

Answer:

sorry

Explanation:.

Answer:

84%

Explanation:

Equation 4 is given as:pH = pKa + log ([A-]/[HA])Where pH is the negative log of the hydrogen ion concentration and pKa is the negative log of the acid dissociation constant. [A-] is the concentration of the conjugate base and [HA] is the concentration of the acid.

Using equation 4, the buffer capacity of water can be calculated using the following formula:

β = dC/dpH

where β is the buffer capacity, dC is the change in concentration of the acid or the base, and dpH is the change in pH per unit concentration.

To calculate the buffer capacity of water, we need to know the acid dissociation constant (Ka) of water. The Ka of water is 1.0 x 10-14 M at 25°C.

Therefore, the pKa of water is 14.0 at 25°C.We can assume that the concentration of water is constant, so the change in concentration of water (dC) is zero. Therefore,β = dC/dpH = 0/dpH = 0The buffer capacity of water is zero because water cannot act as a buffer since it is a neutral substance with no acid or base properties.Showing the work for Answer 14:β = dC/dpHwhere dC = 0 (since the concentration of water is constant) and dpH = 1Therefore,β = 0/1 = 0M/pHThe buffer capacity of water is zero M/pH.

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Answer:

\(5850\ \text{cal}\)

Explanation:

m = Mass of water = 4500 g

c = Specific heat of water = \(1\ \text{cal/g}^{\circ}\text{C}\)

\(\Delta T\) = Change in temperature of water = \(1.3^{\circ}\text{C}\)

Heat is given by

\(q=mc\Delta T\\\Rightarrow q=4500\times 1\times 1.3\\\Rightarrow q=5850\ \text{cal}\)

A slice of the bread contains \(5850\ \text{cal}\).

The state of the balloon:

When the balloon is submerged in the beaker, the amount of water in the beaker will get reduced.  

What is Osmosis:    

Based on the concentration of solutes on both sides of the membrane, water will flow through a permeable membrane in a specific direction.

Hypertonic solution:

It means that there are more solutes present in the surrounding environment than in the cell itself.

Hypotonic solution:

In a hypotonic solution, the concentration of solutes inside the cell is higher than that outside the cell.

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If [AlF6]3− is dissolved in pure water, the correct answer is D. It is impossible to determine the relative concentrations of [Al3+] and [F−] solely based on the information given. Additional information about the solubility and dissociation behavior of [AlF6]3− is needed to determine the concentrations of the individual ions in the solution accurately.

The dissociation behavior of [AlF6]3− in water depends on its solubility and the strength of its interaction with water molecules. Without specific information regarding the solubility and dissociation equilibrium constant (Ksp or Kdiss) of [AlF6]3−, it is not possible to determine the relative concentrations of [Al3+] and [F−] in the solution.

The concentration of [Al3+] and [F−] in the solution will depend on factors such as the degree of dissociation of [AlF6]3− and the formation of other species or complexes in the presence of water. To accurately assess the concentrations of individual ions, additional data or information is required. Therefore, the correct answer is D, as it is impossible to determine the relative concentrations of [Al3+] and [F−] based on the given information.

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At a pH of 10.7 the cyclohexyl amine is neutral

The pka of a substances describes how strong an acid is and the rate of disociation or ability of a substance to form ions

The changes in the sounroding pH can make the substances to be neutral, protonated or deprotonated.

Based on this, if the pka of cyclohexyl amine is 10.7 and the pH is also 10.7 the substance is neutral.

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Answer:

Types of atomic orbitals present in the third principal energy are s, p and d only .

Explanation:

Thus , the correct option is C (s , p and d only .)

Answer:

s, p, and d

Explanation:

The pH of the 7.9 x 10^-4 M Ba(OH)2 solution is 11.20.

The pH of a solution can be calculated using the formula pH = -log[H+], where [H+] is the concentration of hydrogen ions in the solution. In the case of Ba(OH)2, it is a strong base that dissociates completely in water, producing hydroxide ions (OH-) and barium ions (Ba2+). Since there are two hydroxide ions for every one Ba2+ ion, the concentration of hydroxide ions in the solution will be twice the concentration of Ba(OH)2. Therefore, the [OH-] concentration is 1.58 × 10^-3 M. To find the pH, we need to calculate the concentration of hydrogen ions by using the equation [H+] x [OH-] = 1 x 10^-14. Plugging in the [OH-] concentration, we get [H+] = 6.33 x 10^-12 M. Finally, using the pH formula, we get pH = -log(6.33 x 10^-12) = 11.20. Therefore, the pH of the 7.9 x 10^-4 M Ba(OH)2 solution is 11.20.

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Answer:

Explained below.

Explanation:

A substance at low temperature simply means that the average energy of molecular motion in that substance is low while at higher temperature, the average energy of molecular ml tip in that substance is high.

The rate constant of a first-order reaction that takes 555 seconds for the reactant concentration to drop to half of its initial value is 1.2 x 10^-3 sec^-1.

A first-order reaction refers to a chemical reaction in which the rate of reaction is proportional to the concentration of the reactant. In other words, doubling the reactant concentration doubles the reaction rate. The time taken that is taken for original population of radioactive atoms to decay to half of initial value is called the half-life. The half-life of a first-order reaction is a constant that is related to the rate constant (k) for the reaction given by: t1/2 = 0.693/k. Radioactive decay reactions are first-order reactions.

According to the provided information, t1/2 = 555 seconds

Hence,

555 = 0.693/k

k = 0.693/555 = 0.0012486 = 1.2 x 10^-3 sec^-1

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Answer:

13.75

Explanation:

Density is equal to mass divided by volume. 110/8 = 13.75

The observation which corresponds to physical change are a liquid freezes into a solid and a solid dissolves into water.

The observation which corresponds to chemical change are a solution heats up upon mixing with another, the color of a substance changes over time, bubbles are produced upon mixing two solutions, and a precipitate is formed from two solutions.

When it comes to determining whether each observation corresponds to a physical change or a chemical change:

1. A liquid freezes into a solid corresponds to a physical change.

The explanation for this is that physical changes occur when the form of the substance alters, but the chemical composition of the substance stays the same. Because the liquid's chemical composition does not alter during the process of freezing, it is classified as a physical alteration.

2. A solution heats up upon mixing with another corresponds to a chemical change.

A chemical change is one in which the composition of the substance changes. This is most commonly accomplished through a chemical reaction, which is when the original molecules are transformed into new molecules. In this instance, when two solutions are combined and heat is generated, a chemical reaction is occurring.

3. A solid dissolves into water corresponds to a physical change.

The explanation for this is that the process of dissolving a solid into water does not alter the chemical composition of the solid. Instead, the solid's particles are separated by the water particles, resulting in a homogenous solution. Because the chemical composition remains constant, it is classified as a physical change.

4. The color of a substance changes over time corresponds to a chemical change.

This alteration is often linked to a chemical reaction. When a substance's color changes over time, it is frequently due to the presence of a different substance. As a result, the chemical composition of the original substance is altered. As a result, it is classified as a chemical alteration.

5. Bubbles are produced upon mixing two solutions corresponds to a chemical change.

This alteration is often linked to a chemical reaction. When two substances combine and produce bubbles, it is usually the result of the generation of a new gas. As a result, the original molecules have transformed, resulting in a new substance. As a result, it is classified as a chemical alteration.

6. A precipitate is formed from two solutions corresponds to a chemical change.

When two solutions are combined, they frequently react to form a precipitate. This indicates that a new substance has been produced, and the original substance's composition has been altered. As a result, it is classified as a chemical alteration.

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Various samples of the must be combusted in other to obtain a reliable result.

The bomb calorimeter is used to obtain the energy of a sample. This is called the energy equivalent or the energy value of the sample.

Now, we know that the bomb calorimeter is calibrated by the use of benzoic acid hence it must be combusted first to obtain the basic energy value of the calorimeter.

Various samples of the must be combusted in other to obtain a reliable result.

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Digging of wells being able to increase aquifer is something I agree with.

This is a water permeable rock layer which is found in the underground layer of the earth.

Wells will ensure water seeps into these layers thereby bringing about an increase in the aquifer.

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Answer: A

Explanation: Because thats the answer

Since all of the reactants and products are soluble in water, no precipitate is produced.

What is the solution?

A solution is a specific kind of homogeneous mixture made up of two or more substances that are used in chemistry. A solute is a substance that has been dissolved in a solvent, which is the other substance in the mixture.

The positive and negative ions of two ionic compounds swap positions during a double-replacement reaction to create two new compounds. An example of a double-replacement reaction, also known as a double-displacement reaction, is:

AB+CD→AD+CB

A and C are positively charged cations in this reaction, whereas B and D are negatively charged anions. In an aqueous solution, double-replacement reactions typically take place between substances. A reaction must produce one of the following in order to take place: a solid precipitate, a gas, or a molecular compound like water.

The reaction Iron (II) Sulfate and potassium chloride is

FeSO₄ + 2KCl → FeCl₂ + K₂SO₄

Both FeCl₂  and K₂SO₄ are liquid form.

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In Ionic Bond metals lose valence electrons and become positively charged cations, non metals accepts valence electrons and become negatively charged anions .

Ionic bonds are formed in vicinity of atoms like for example NaCl , KCl , CaCl₂.

Ionic bonding is the complete transfer of valence electrons between atoms. Ionic compounds obey octet rule and become more stable and so they are typically neutral.

Ionic Bonds, metals lose valence electrons and become Positively charged cation .

Non metals accepts electrons and becomes negatively charged anion.

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Answer:

You are not supposed t9 be cheating

Explanation:

Answer:

ΔT = 0.116 °C

Explanation:

Using Formula

Q = mc ΔT

Where Q = 0.360, c = 4.184 and m = 0.7402

ΔT = Q/mc

ΔT = 0.360/ (4.184)(0.7402)

ΔT = 0.360 / 3.097

ΔT = 0.116 °C

So, The change in Temperature/Increase in Temperature is 0.116 °C

The heat that has been taken in by the water is 40.2 kJ.

We know that when we heat the water the water would be turned from liquid to the vapor state . As such we are interested in the heat that would be evolved when this process would be taking place and we can be ale to write that;

H = mcdT

H = heat that have been evolved or absorbed

m = mass of the water

c = Heat capacity of the water

dT = The temperature change of the water.

As such, we have that;

H = 500 * 4.12 * (39.5 - 20)

H = 40.2 kJ

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The effect of changing the temperature of the nitric acid on the rate of reaction. (Include measuring the volume of carbon dioxide gas produced) is Rate of reaction increases.

When we increase the temperature of the reaction the rate of reaction also increases. With the increase of the temperature of the nitric acid HNO₃, the rate of the reaction also increases as the molecule moves faster. Arrhenius equation given as :'

k = Ae^(Ea / RT)

or, ln k = -Ea /RT + ln A

where,

k = rate constant

A = Arrhenius constant

Ea = activation energy

R = gas constant

T = temperature

Thus, The effect of changing the temperature of the nitric acid on the rate of reaction. (Include measuring the volume of carbon dioxide gas produced) is Rate of reaction increases.

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7.77 × 10^(-4) in standard notation is 0.000777.

To convert a number from scientific notation to standard notation, we need to multiply the coefficient (7.77) by the power of 10 (-4). In this case, the given number is 7.77 × 10^(-4).

To convert it to standard notation, we need to move the decimal point to the left or right based on the exponent of 10. Since the exponent is negative (-4), we move the decimal point four places to the left.

Starting with the number 7.77, we move the decimal point four places to the left:

7.77 → 0.000777

Therefore, 7.77 × 10^(-4) in standard notation is 0.000777.

In standard notation, we express the number without any exponent or power of 10. It is a way to represent the number in a more conventional format, where the decimal point is placed in relation to the significant digits of the number.

Remember to correctly place the decimal point when converting between scientific notation and standard notation, considering the positive or negative exponent of 10.

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The chemical force most directly responsible in the given case is hydrophobic interactions.  

The interactions between hydrophobes and water, or low water-soluble compounds, are illustrated by the hydrophobic interactions. Nonpolar hydrophobes often have a longer carbon chain than polar molecules and do not interact with the water molecules. By removing a peptide from the N terminus of trypsinogen, it can become trypsin, which allows a salt bridge to develop between the new N-terminal.

The trypsin "activation domain" undergoes a conformational shift in response to the development of this salt bridge, resulting in the establishment of the oxyanion hole and S1 binding site. Trypsinogen activation thus seems to be an illustration of protein folding influenced by electrostatic interactions. The activation domain receives 5 kcal/mol of stabilization energy through hydrophobic interactions with the Ile16 side chain.

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The concentration of the NaOH solution is 10.00 g/dm³.

To calculate the concentration in g/dm³ of a solution of NaOH containing 0.25 moles in 1 dm³, we need to know the molar mass of NaOH.

The molar mass of NaOH is calculated as follows:

Na (Sodium) = 22.99 g/mol

O (Oxygen) = 16.00 g/mol

H (Hydrogen) = 1.01 g/mol

Molar mass of NaOH = 22.99 g/mol + 16.00 g/mol + 1.01 g/mol = 40.00 g/mol

Now, we can calculate the concentration (C) using the formula:

C = (moles of solute) / (volume of solution in dm³)

C = 0.25 moles / 1 dm³

C = 0.25 mol/dm³

To convert moles to grams, we can multiply the molar mass by the number of moles:

Concentration in g/dm³ = (0.25 mol/dm³) * (40.00 g/mol)

Concentration in g/dm³ = 10.00 g/dm³

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Answer: Alcohol undergoes nucleophilic substitution when reacted with hydrohalic acids (HX) such as HCl.

Explanation:

Answer:

The volume of the balloon will decrease.

Explanation:

I had some leftover liquid nitrogen so I tried it in my pool.