A vinegar solution of unknown concentration was prepared by diluting 10. 00 mL of vinegar to a total volume of 50. 00 mL with deionized water. A 25. 00-mL sample of the diluted vinegar solution required 20. 24 mL of 0. 1073 M NaOH to reach the equivalence point in the titration. Calculate the concentration of acetic acid, CH3COOH, (in M) in the original vinegar solution (i. E. , before dilution)

Answer:

C. oxidation ..........

The given reaction is the breaking of the carbohydrate C₁₂H₂₂O₁₁ into 12 C and 11 H₂O. Hence, it is a decomposition reaction .

A decomposition reaction is a type of chemical reaction in which a compound breaks down into two or more simpler substances, either through heat, light, or an electrical current.

In a decomposition reaction, a single reactant is converted into two or more products, which can be elements or compounds.

The general equation for a decomposition reaction can be written as:

AB → A + B

where AB is the reactant and A and B are the products.

Decomposition reactions are important in many chemical processes, such as the breakdown of organic matter in soil, the production of industrial chemicals, and the functioning of biological systems.

The given  reaction is the decomposition of C₁₂H₂₂O₁₁ into 12 C and 11 H₂O.

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Your complete question is follows:

C₁₂H₂₂O₁₁ ⇒ 11 H₂O + 12 C

Which type of reaction is

O synthesis

O decomposition

O oxidation

O combustion

0.383 moles of KCIO3 must be reacted to transfer -34.2 kJ of heat.

The heat transferred in a chemical reaction can be calculated using the formula:

q = n * ΔH

where q is the heat transferred, n is the number of moles of the substance being reacted, and ΔH is the enthalpy change of the reaction.

In this case, we are given the heat transferred (q) as -34.2 kJ and the enthalpy change (ΔH) as -89.4 kJ. To find the number of moles of KCIO3 that must be reacted, we can rearrange the formula as:

n = q / ΔH

n = -34.2 kJ / -89.4 kJ

n = 0.383 moles

Therefore, 0.383 moles of KCIO3 must be reacted to transfer -34.2 kJ of heat.

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Answer:

the volume of the gas when pressure 0.974atm is equal to 127.06ml

Answer:

The balanced chemical equation for the reaction you provided is: CaC2 + 2H2O → Ca(OH)2 + C2H2.

According to this equation, for every mole of CaC2 that reacts with 2 moles of H2O, one mole of C2H2 is formed. So if 1.25 moles of C2H2 are formed, it means that 1.25 moles of CaC2 reacted with 2.5 moles of H2O.

Therefore, 2.5 moles of water are consumed when 1.25 moles of C2H2 are formed.

Steps:

Here are the steps I took to determine how many moles of water are consumed when 1.25 moles of C2H2 are formed:

1. First, I looked at the balanced chemical equation you provided: CaC2 + 2H2O → Ca(OH)2 + C2H2.

2. From this equation, I could see that for every mole of CaC2 that reacts with 2 moles of H2O, one mole of C2H2 is formed. This is known as the stoichiometry of the reaction.

3. Since you mentioned that 1.25 moles of C2H2 are formed, I used the stoichiometry of the reaction to determine that 1.25 moles of CaC2 must have reacted with 2.5 moles of H2O (since for every mole of CaC2 that reacts, 2 moles of H2O are consumed).

4. Therefore, I concluded that 2.5 moles of water are consumed when 1.25 moles of C2H2 are formed.

I hope this explanation helps! Let me know if you have any further questions.

The word equation that represents the violent reaction between sodium and water is as follows: sodium + water → sodium hydroxide + hydrogen.

A chemical reaction is the process, typically involving the breaking or making of interatomic bonds, in which one or more substances are changed into others.

According to this question, sodium (Na) and water (H2O) are involved in a chemical reaction to produce sodium hydroxide (NaOH) and hydrogen gas (H2).

Therefore, the word equation that represents the violent reaction between sodium and water is as follows: sodium + water → sodium hydroxide + hydrogen

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Answer:

QUESTION:

Where have you seen or known of examples of waves in YOUR LIFE? Based on science terms of a wave.

ANSWER:

I've seen the following in my life:

~ Lightwaves

~ Heatwaves

~ Electromagnetic waves

~ X-rays

~ Tsunami Waves

Explanation:

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The number of isomers of Heptane and sketch/draw all the structures is 9 isomers.

Isomers are molecules or polyatomic ions with identical molecular formulae that are, identical variety of atoms of every detail however awesome preparations of atoms in space. Isomerism is the existence or opportunity of isomers. Isomers no longer always share similar chemical or bodily residences.

One in all two or more compounds that have equal chemical components however extraordinary arrangements of the atoms within the molecules and that can have exclusive physical/chemical homes.

Structural isomers are the one's isomers wherein the atoms are absolutely organized in a distinct order with equal molecular formulation. those are the molecules having the identical form of molecular system with distinct connectivities relying upon the order they may be prepared.

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Since there is no more gas to vent into the suit, the suit does not vent anymore co2 out of the suit as he uses up the oxygen he makes more co2 this will result in Hypoxemia or respiratory failure.

Hypoxemia is characterised by low amounts of oxygen in the blood. It causes headaches, trouble breathing, a high heart rate, and blue skin.

Respiratory failure is a condition in which your blood lacks oxygen or contains too much carbon dioxide. Both difficulties might occur at times.

When you breathe, oxygen enters your lungs. The oxygen enters your bloodstream and travels to your organs. Your organs, such as your heart and brain, require oxygen-rich blood to function properly.

Another aspect of breathing is exhaling carbon dioxide from the bloodstream. Too much carbon dioxide in your blood can be harmful to your organs.

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The mass of H2O2 dissolved is not directly provided in the given information. Additional calculations or data are required to determine the mass of H2O2 dissolved.

The mass of hydrogen peroxide (H2O2) dissolved in 100 ml of water is calculated to be approximately X grams.

To determine the mass of H2O2 dissolved, we can use the balanced chemical equation for the reaction between hydrogen peroxide and potassium permanganate:

5H2O2 + 2KMnO4 + 3H2SO4 → 5O2 + 2MnSO4 + 3H2O + K2SO4

From the balanced equation, we can see that the mole ratio between H2O2 and KMnO4 is 5:2.

Given that 21 ml of 1.68 M KMnO4 solution was required for the titration, we can calculate the number of moles of KMnO4 used:

Volume of KMnO4 solution = 21 ml = 0.021 L

Molarity of KMnO4 solution = 1.68 M

Number of moles of KMnO4 = Molarity × Volume

= 1.68 M × 0.021 L

= 0.03528 moles

Using the mole ratio, we can determine the number of moles of H2O2:

Number of moles of H2O2 = (5/2) × Number of moles of KMnO4

= (5/2) × 0.03528 moles

To convert moles of H2O2 to grams, we need to multiply by its molar mass. The molar mass of H2O2 is approximately 34.02 g/mol.

Mass of H2O2 = Number of moles of H2O2 × Molar mass of H2O2

= (5/2) × 0.03528 moles × 34.02 g/mole

The mass of hydrogen peroxide (H2O2) dissolved in 100 ml of water is approximately X grams. This value was determined by titrating the H2O2 solution with a 1.68 M KMnO4 solution, and the titration required 21 ml of the KMnO4 solution. The calculation involved using the balanced chemical equation, molar ratios, and the molar mass of H2O2 to convert the volume of KMnO4 used to the mass of H2O2 dissolved.

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Answer:

N₂ +  3H₂    →       2NH₃

Explanation:

Chemical equation:

N₂ +  H₂    →       NH₃

Balanced chemical equation:

N₂ +  3H₂    →       2NH₃

Step 1:

N₂ +  H₂    →       NH₃

left hand side:                       Right hand side

N =  2                                     N = 1

H = 2                                      H = 3

Step 2:

N₂ +  3H₂    →       NH₃

left hand side:                       Right hand side

N =  2                                     N = 1

H = 6                                      H = 3

Step 3:

N₂ +  3H₂    →       2NH₃

left hand side:                       Right hand side

N =  2                                     N = 2

H = 6                                      H = 6

Formaldehyde is a substance made up of Carbon, Nitrogen, and Oxygen different types of atoms that are chemically combined in a fixed ratio of 1: 2:1. It is classified as an aldehyde.

This refers to a naturally occurring organic compound with the formula CH2O and structure H−CHO. It is also called methanal. The pure compound is a pungent, colorless gas such that it polymerizes spontaneously into paraformaldehyde. It can be stored as an aqueous solution that is formalin. This is also used to store animal specimens.

Formaldehyde is an organic compound. It contains a carbon atom present in its chemical formula. It is also classified as an aldehyde. Formaldehyde(RC=OH) contains a formyl group  and an R group, which is a group that contains carbon and/or hydrogen.

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Answer:

snow, or freezing rain?

Explanation:

because freezing rain can occur then, but snow is more common.

Answer:

that the polar bear will come out again in 2 years

Answer:

Gravity

Explanation:

Without gravity it would just float in space.

Please mark brainliest, i need two more to achieve expert

Answer:

a

Explanation:

I'll explain along side with potassium (k) and Calcium (Ca). the unit for scandium is SC

Sc = 21

Ca = 20

K =19

k = 1s²,2s²,2p⁶,3s²,3p⁶,3d⁰,4s¹

Ca = 1s²,2s²,2p⁶,3s²,3p⁶,3d⁰,4s²

Sc = 1s²,2s²,2p⁶,3s²,3p⁶,3d¹,4s²

if you notice above Sc has 3d¹ while Ca has 3d⁰. This is because Sc is a transition metal

Transition metals are metals whose d-orbital aré partially filled with electron

A food web is better to understand the feeding relationship among the organism than the food chain because it has more number of participants.

A food chain is a linear relationship between the organism but the food web is a combination of several food chains that are interconnected together to form a web like structure.

The food web is a better option to understand and represent the feeding relationship between any two organism because they have more number of member in the food web. They crosslinks each other and one organism participate into more than one food chain that more practically correct.

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The molarity of ions in a 0.486 M solution of AIBr is 0.972 M.

AIBr is the abbreviation for aluminum iodide. Aluminum iodide is an inorganic compound composed of aluminum and iodide. Aluminum iodide is the most commonly used iodide source in organic synthesis. When the compound AIBr is completely dissociated, it will form two types of ions, A+ and Br−. The molarity of ions is dependent on the concentration of AIBr that will be dissociated.

The equation of the dissociation of AIBr can be written as

AIBr → A+ + Br−

Number of ions formed from AIBr = 2

The molarity of ions in a 0.486 M solution of AIBr,

assuming the compound dissociates completely can be calculated as follows:

Molarity of ions = Number of ions formed × Molarity of the compound

Molarity of ions = 2 × 0.486 M

Molarity of ions = 0.972 M

Therefore, the molarity of ions in a 0.486 M solution of AIBr; assuming the compound dissociates completely is 0.972 M.

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Answer: A FILTERING

Explanation:

WHEN YOU FILTER YOU SEPARATE (sorry for caps) btw can you check out my recent question plz

The conversion of 25 miles per hour into meters per second using the

given conversion ratios is  \(\mathbf{ \dfrac{1609\ meters}{144 \ seconds}}\) .

Conversion ratios are used in metric systems for changing one unit to another using the standard conversion numbers.

Given that:

∴

To convert 25 miles/ hour to meter/seconds, we have:

\(\mathbf{=\dfrac{(25 \times 1.609) \ km}{(60 \times 60) \ seconds}}\)

\(\mathbf{=\dfrac{(25 \times 1.609 )\times 1000 \ meters}{(60 \times 60) \ seconds}}\)

\(\mathbf{= \dfrac{40225 \ meters}{3600 \ seconds}}\)

\(\mathbf{= \dfrac{1609\ meters}{144 \ seconds}}\)

The conversion of celsius to kelvin can be achieved by the addition of the given amount of celsius rate with the constant 273.15 K.

To convert  100 °C into K we have:

To convert °F to °C, we use the equation:

\(=\mathbf{(^0 F - 32)\times \dfrac{5}{9}}\)

To convert 100 °F to °C, we have:

\(= \mathbf{(100^0 F - 32)\times \dfrac{5}{9}}\)

\(= \mathbf{(68^0 F)\times \dfrac{5}{9}}\)

= 37.78°F

To convert 1 foot to kilometers by using the standard conversion ratios, we have the following;

Since;

∴

\(=\mathbf{\Big(\dfrac{12 * 0.0254}{1000}} \ kilometer \Big )\\)

= 0.0003048 kilometers

Therefore, we can conclude that 25 miles per hour into meters per

second is  \(\mathbf{ \dfrac{1609\ meters}{144 \ seconds}}\).

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The mass of neon present in the given mixture is approximately 6.13 g.

Total volume of mixture = 1.00 L, Total pressure of mixture = 1.15 atm, Temperature of the mixture = 255 K, Partial pressure of helium = 0.75 atm. We are supposed to find the mass of neon present in the mixture. The mole fraction of helium can be calculated as X(He) = P(He) / P(total)X(He) = 0.75 / 1.15X(He) = 0.6522. Similarly, the mole fraction of neon can be calculated as X(Ne) = 1 - X(He)X(Ne) = 1 - 0.6522X(Ne) = 0.3478.

Now, let us calculate the number of moles of helium present in the mixture: n(He) = X(He) x V x P / RTn (He) = 0.6522 x 1.00 x 0.75 / 0.0821 x 255n(He) = 0.0224 mol. Similarly, the number of moles of neon can be calculated: n(Ne) = X(Ne) x V x P / RTn (Ne) = 0.3478 x 1.00 x 0.40 / 0.0821 x 255n(Ne) = 0.0119 mol. The mass of neon can be calculated by using the formula: mass = molar mass x number of moles mass = 20.2 g/mol x 0.0119 mol ≈ 6.13 g. Hence, the mass of neon present in the given mixture is approximately 6.13 g.

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Explanation:

According to the problem 0.2916 g of water were produced, so we have to find the number of moles of H in that sample of water. First we will convert those grams into moles using the molar mass of water.

molar mass of H = 1.01 g/mol

molar mass of O = 16.00 g/mol

molar mass of H₂O = 2 * 1.01 g/mol + 1 * 16.00 g/mol

molar mass of H₂O = 18.02 g/mol

moles of H₂O = 0.2916 g * 1 mol/(18.02 g)

moles of H₂O = 0.01618 moles

One molecule of H₂O contains two atoms of H. So 1 mol of H₂O molecules will contain 2 moles of H atoms. We can use that relationship to find the answer to our problem.

1 mol of H₂O = 2 moles of H

moles of H = 0.01618 moles of H₂O* 2 moles of H/(1 mol of H₂O)

moles of H = 0.03236 mol

Answer: 0.03236 mol of H atoms are present in the water produced.

If one electron is removed from sodium during a reaction energy level becomes the valence shell is outermost shell

Electrons are the smallest of the particles that make up an atom, and they carry a negative charge a neutral sodium atom is likely to achieve an octet in its outermost shell by loosing its one valence electron the cation produce in this way is Na⁺ is called as sodium ion distinguish it from element and the outermost shell of sodium ion is the second electron shell which has eight electrons in it

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The reaction that take place when active metals react with acids are:

Active metals are those metals which are very reactive and are found high above hydrogen in the activity series of metals.

The reactivity of metals is determined by the ability of the meta to give up electrons to form positive ions called cations.

Therefore, active metals are those metals that readily give up their electrons to form cations.

The active metals are found in the group 1A and 2A and 3A of the periodic table.

The active metals include; sodium, potassium, calcium, aluminum, magnesium, zinc etc.

The active metals react with dilute acids to displace hydrogen, resulting in the evolution of hydrogen gas.

Considering the given equations, the reactions of the active metals are:

Mg (s) + 2HCl (aq) → MgCl₂ (aq) + H₂ (g)

Zn (s) + 2 HCl (aq) → ZnCl₂ (aq) + H₂ (g)

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  A solution with equal concentrations of both HAc (acetic acid) and Ac- (acetate ion) is an example of a buffer solution. Buffer solutions are capable of resisting changes in pH when small amounts of acid or base are added. In this case, the HAc and Ac- components act as a conjugate acid-base pair, with HAc being the weak acid and Ac- being its conjugate  base.

  A buffer solution consists of a weak acid and its conjugate base (or a weak base and its conjugate acid). In this scenario, the equal concentrations of HAc (acetic acid) and Ac- (acetate ion) form a buffer system.

  Acetic acid (HAc) is a weak acid that can partially dissociate in water, releasing H+ ions and forming acetate ions (Ac-). The equilibrium between HAc and Ac- can be represented as follows:

HAc ⇌ H+ + Ac-

  When the concentrations of HAc and Ac- are equal, the buffer solution is at its optimal buffering capacity. It means that the system is capable of resisting changes in pH when small amounts of acid or base are added. If an acid is added, the acetate ions can react with the additional H+ ions to maintain the pH. Conversely, if a base is added, the excess OH- ions can react with the acetic acid to maintain the pH.

  The presence of a conjugate acid-base pair in the buffer solution allows for the maintenance of a relatively constant pH. Buffer solutions find applications in various fields, such as biochemistry, pharmaceuticals, and analytical chemistry, where the control of pH is essential for maintaining proper chemical reactions or biological processes.

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Electronegativity across a period: increases.

Electronegativity down a group: decreases.

Explanation:

Just did on Edge 2021

Electronegativity across a period increases and Electronegativity down a group decreases.

Electronegativity, symbolized as χ, is the tendency for an atom of a given chemical element to attract shared electrons when forming a chemical bond.

An atom's electronegativity is affected by both its atomic number and the distance at which its valence electrons reside from the charged nucleus.

On the periodic table, electronegativity generally increases as we move from left to right across a period and decreases as you move down a group.

As a result, the most electronegative elements are found on the top right of the periodic table, while the least electronegative elements are found on the bottom left.

Hence, Electronegativity across a period increases and Electronegativity down a group decreases.

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1 and 4 are correct. Radon is a noble gas and a nonmetal.

In summary, a bond having "more ionic" or "more covalent" character refers to the degree to which the bond is either purely ionic or purely covalent, with most bonds falling somewhere in between.

When a bond has more ionic character, it means that the electrons are transferred more completely from one atom to another, resulting in larger differences in electronegativity and a greater degree of charge separation between the atoms. This typically occurs when there is a large difference in electronegativity between the atoms involved in the bond.

On the other hand, when a bond has more covalent character, it means that the electrons are shared more equally between the atoms, resulting in a smaller difference in electronegativity and less charge separation. This typically occurs when the atoms involved in the bond have similar electronegativities.

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