Use Appendix C to choose the solution with the lower pH:0.5MCuBr₂ or 0.5MAlBr₃

During the oxidative phosphorylation of cellular respiration, hydrogen can be considered as a reducing agent because it loses electrons while molecular oxygen is an oxidizing agent because it accepts electrons.

Reducing and oxidizing agents are different molecules that accept and donate electrons in chemical redox reactions such as oxygen which accept and hydrogen which donates.

Therefore, with this data, we can see that reducing and oxidizing agents are related and they work together to move electrons in different redox reactions such as occur during cellular respiration.

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Answer:

2

Explanation:

M=mole/liters

C6H12O6; 180.2 g/mol

360.4g / 180.2 g per mol = 2. we have 2 moles now.

M=mole/liters

1M=2mole/xliters

2/1=2

2x2=1

1M=2/2

x=2

Answer:

2

Explanation:

Acellus

The atomic hybrid orbitals which make up the bond between C and O in formaldehyde, \(CH_{2} O\) will be one s-orbital and two p orbital make sp2 hybridization.

The 3 new hybrid orbitals can only be created through  \(sp^{2}\) hybridization, which occurs whenever an atom's two pi orbitals including one s orbital overlap with mix together. Consequently, \(CH_{2} O\) (Formaldehyde) has \(sp^{2}\)hybridization.

It is found that when atoms share one electron then it will form sigma bond whereas when atoms share more than one electrons then it will form pi bond.

Therefore, the hybridization of  \(CH_{2} O\)  will be  \(sp^{2}\) hybridization.

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Answer:

volcanic eruption.

mark my answer as brainlest......

When 999\(cm^3\)of water are added to a solution of a strong base, the pH of the resulting solution will Increase by a factor of 3

The acidity or basicity of a solution is determined by its pH. An acidic pH is one below 7, a basic pH is one above 7, and a pH of 7 is neutral. The hydrogen ion concentration's negative logarithm is used to compute a solution's pH.

1 \(cm^3\)of a strong base solution will dissolve in 999 \(cm^3\) of water, which will result in a 1000-fold reduction in the concentration of hydrogen ions. This is because the water will dilute the hydrogen ions. Consequently, the solution's pH will increase by 3.

Therefore, the correct option is D.

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Answer: mixture

Explanation: Answer my own question on my page please.

Answer: A mixture.

Explanation: A substance has to do with the chemical composition changing, so if you just dissolve sugar into water nothing changes in either’s chemical composition.

Answer:

The valency of sulphur in SO2 is 4.

Hope this helps..

\(good \: luck\)

Answer: Among these options, the formula that represents an ionic compound is E) BaI2.

Explanation: Ionic compounds are compounds that are formed through the combination of cations (positively charged ions) and anions (negatively charged ions).

BaI2 represents barium iodide. Ba represents barium, which is a metal, and I represents iodine, which is a non-metal. When barium (Ba) loses two electrons to become a cation Ba2+ and iodine (I) gains two electrons to become an anion I-, they form an ionic compound with the formula BaI2.

Answer:

I don't know the answer I will answer you after 20 years

Answer:

According to mole concept,

Number of moles (n)= Given mass of Cu(NO3)2/Molar mass of Cu(NO3)2

= 3.13/187.56

= 0.01668 moles

Molarity (M) = Number of moles of solute (n) / Volume of solution in Liters (V)

Volume of solution in Liters (V) = Number of moles of solute (n) / Molarity (M)

= 0.01668/0.75

= 0.02224 L

= 22.24 mL

Thus, volume of the solution is 22.24 mL.

Answer:

Give them a question as an answer and then leave without them noticing that it was a question.

Explanation:

that is what I do.

Answer:

4tbs

Explanation:

A 75-lb dog must be dewormed. If the daily dose of the dewormer is 1 tsp/25 lb of body weight for 3 days, approximately how much should be given each day?

1 tbs = 3 tsp

answer: 1 tbs

An intrapreneur is an individual who exhibits entrepreneurial qualities and behaviors within an established organization.

They are often innovative, creative, and take initiative to develop and implement new ideas, products, or processes within the company.  In the context you provided, someone working in labs or organizations, such as Sperti Foamt, and collaborating with members of the Arab American community can be considered an intrapreneur if they are actively seeking opportunities to drive positive change, bring about innovation, and create value within their organization. The practise of acting like an entrepreneur while employed by a huge corporation is known as intrapreneurship. Intrapreneurship is defined as the use of a corporate management style that combines risk-taking and innovative approaches, as well as the rewards and motivating strategies that are more typically associated with entrepreneurship.

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As per the given statements : 1. Particle A is an atom because it has protons, electrons and neutrons.2. A, B and C are all particles of the same element. No, A, B and C are not the particles of same element as there no. of electrons differ. 3.Particles A and C are isotopes of the same element. Yes.

The smallest unit of matter in which it can be broken without exhibiting any charged particle is termed as atom. atom is made up of three particles of which Proton (+ivly charged) and electron (-ivly charged) are charged particles while neutron is a neutral particle , doesn't have any charge.

They are the particles of same element and have same no . of protons and electrons i.e. is same atomic number but they differ in no. of neutrons.

So bcz of the above reason in statement three Particles A and C are isotopes of the same element is correct.

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Answer:

Cancer

Explanation:

Cancer is a genetic disease—that is, it is caused by changes to genes that control the way our cells function, especially how they grow and divide. Genetic changes that cause cancer can happen because: of errors that occur as cells divide.

Polymerization reactions in which polysaccharides are synthesized from monosaccharides, Option E: result in the formation of water.

Polymerization reaction involves joining of monosaccharides together with the linkage of glycosidic bonds. The process of combining of these monosaccharides involve formation of water molecule as a byproduct of the process. This is called condensation reaction. Hence, option E is the correct choice.  

Polymerization is the process of producing polymers. These polymers are then processed to make a variety of plastic products. During polymerization, smaller molecules, or monomers, are chemically linked to create larger molecules, or macromolecules. Polysaccharides are produced when a glycol donor and a glycol acceptor undergo repeated polymerization reactions.  

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Answer:

(c) 15.39 kg of copper present in 1tonne of ore.

Explanation:

We are given that ore contains 3% of copper carbonate

1tonne = 1000kg

3% of copper carbonate in 1000kg of ore will be

= \(\frac{3}{100}*1000\) = 30kg

30 kg of copper carbonate is present in ore

CuCO3 has 63.5g of cupper present in it

molar mass of CuCO3 = 123.5

so the percentage of copper present in CuCO3

= \(\frac{63.5}{123.5}*100\) = 51.3% of copper present per kg CuCO3

Now

amount of copper present in 30kg of CuCO3

= \(\frac{51.3}{100}* 30\) = 15.39kg

15.39 kg of copper present in 1tonne of ore

The mass of copper obtained from 1 tonne of the ore is 15.4 kg

The copper ore has 3% of copper carbonate by mass.

The mass of copper carbonate in 1 tonne of the ore can be calculated below.

1000 kg = 1 tonne

Therefore,

mass of copper carbonate = 3 /100 × 1000 = 30 kg

atomic mass of copper = 63.5 g

molar mass of CuCO₃ = 123.55 g

123.55 g of CuCO₃ gives 63.5 g of copper  

30, 000g of CuCO₃ will give ? of copper

cross multiply

mass of copper = 30,000 × 63.5 / 123.55

mass of copper = 1905000 / 123.55 = 15418.8587616 g

mass of copper = 15418.8587616 / 1000 ≈ 15. 4 kg  

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Answer:

See explanation

Explanation:

Double displacement reaction is a reaction in which the cations in the reactants side exchange partners on the product  side

The molecular equation here is;

CaI2(aq) + K2C2O4(aq) --------->CaC2O4(s) + 2KI(aq)

General ionic equation;

Ca^2+(aq) + 2I^-(aq) + 2K^+(aq) + C2O4^2-(aq) -------> CaC2O4(s) +  2I^-(aq) +

2K^+(aq)

Net ionic equation;

Ca^2+(aq) +  C2O4^2-(aq) ------> CaC2O4(s)

Answer:

9 moles of N2

Explanation:

Well first you balance the equation which would be N2+3 H2>2 NH3. But you need 18 miles of NH3 so you would just replace the 2 moles of NH3 with 18 and balance the rest of the equation from there. And you would get 9 N2 + 27 H2>18 NH3

Sodium (Na) and chlorine (Cl) are the largest dissolved components in ocean water due to the abundance of sodium and chloride ions in the Earth's crust and the continuous input of these elements into the oceans through various processes. Sodium is one of the most common elements in the Earth's crust, and chlorine is widely distributed in rocks, minerals, and salts.

Over millions of years, weathering of rocks, volcanic activity, and erosion release these elements into rivers and ultimately into the oceans. The combination of sodium and chlorine ions results in the formation of sodium chloride, which is commonly known as table salt and contributes to the salinity of seawater.

The most abundant dissolved gas in ocean water is carbon dioxide (CO2). Carbon dioxide dissolves in the surface waters of the ocean through gas exchange with the atmosphere. It plays a crucial role in regulating the pH of seawater and is an essential component of the carbon cycle. Carbon dioxide is involved in various biological and chemical processes in the ocean, including photosynthesis by marine plants and the formation of calcium carbonate shells by marine organisms. Additionally, the increase in atmospheric carbon dioxide due to human activities has led to ocean acidification, which is a significant concern for marine ecosystems.

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Due to the fact that they combine to form the ionic compound sodium chloride (NaCl), also known as salt, sodium (Na) and chlorine (Cl) are the two most abundant dissolved elements in ocean water.

Thus, Salts are among the many dissolved compounds that water from rivers and streams transports into the ocean.

In particular, sodium and chloride ions have accumulated in the ocean throughout time, leading to the high concentration of these elements in seawater. Magnesium, calcium, potassium, and sulphate ions are among the other dissolved substances in ocean water.

Oxygen  is the dissolved gas that is most prevalent in ocean water.

Thus, Due to the fact that they combine to form the ionic compound sodium chloride (NaCl), also known as salt, sodium (Na) and chlorine (Cl) are the two most abundant dissolved elements in ocean water.

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Acetals can be hydrolyzed using catalytic acid to produce a carbonyl compound and alcohol. If the acid concentration is increased, acetal can be hydrolyzed back to its initial aldehyde or ketone form.

This mechanism occurs in the opposite direction of the acetal formation mechanism. The hydrolysis of each acetal generates a carbonyl compound and an alcohol.What are Acetals?Acetals are organic compounds that are formed by the reaction of an aldehyde or ketone with two molecules of alcohol, and they have the following general structure: R1R2C(OR')2.Acetals can be regarded as derived from hemiacetals, which are formed by the reaction of an aldehyde or ketone with one molecule of alcohol.The carbonyl carbon in an acetal is bonded to two alkoxide (OR) groups, while the carbonyl carbon in a hemiacetal is bonded to only one. As a result, acetals are more stable than hemiacetals. Acetals are widely used in organic synthesis, including as protecting groups for carbonyl groups in reactions that would otherwise destroy them.Example:Acetal hydrolysis occurs when an acid catalyst is used to cleave the two ether bonds in the molecule. When an acetal is hydrolyzed with an acid catalyst such as H2SO4, a carbonyl compound and an alcohol are formed.Example:H2SO4 is added to the acetal, which hydrolyzes it, producing an aldehyde or ketone and two alcohol molecules. For example, if dimethyl acetal is hydrolyzed, it will yield acetone and two methanol molecules.

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Answer:

Why Dissolving Salt Is a Chemical Change

Therefore, dissolving salt in water is a chemical change. The reactant (sodium chloride, or NaCl) is different from the products (sodium cation and chlorine anion). Thus, any ionic compound that is soluble in water would experience a chemical change.

Explanation:

The group being referred to in this question is Group 14 of the periodic table. This group includes carbon, silicon, germanium, tin, and lead. Out of these elements, only carbon is a semimetal, while the rest are metals. The correct option is 2.

When elements in Group 14 react, they typically form +4 cations, such as in the case of carbon forming carbon dioxide (CO2). However, elements in this group can also form +2 and +3 cations under certain conditions. For example, tin can form a +2 cation in certain compounds, while lead can form a +2 or +4 cation.

It is interesting to note that while carbon is a semimetal, it is also classified as a nonmetal due to its low reactivity and inability to conduct electricity in its pure form. Carbon is unique in this regard, as it has both metal and nonmetal characteristics depending on its chemical environment.

In conclusion, the element in Group 14 that is a semimetal is carbon, while the other elements in the group are metals that typically form +4 cations.

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(a) We would need 19595.6 J of heat to evaporate 8.66 g of water.

(b) The heat of solution is -3.1 J/mol.

To evaporate 8.66 g of water, we need to use the heat of vaporization for water, which is 2260 J/g.

Therefore, the total amount of heat required to evaporate 8.66 g of water is:

2260 J/g x 8.66 g = 19595.6 J

Therefore,

To find the heat of solution in J/mol, we need to use the formula:

ΔH_solution = -q_solution / n

where;

First, we need to calculate the heat released or absorbed during the solution process, which can be found using the formula:

q_solution = m_solution x C_solution x ΔT

We know that 8 mol of the unknown salt were dissolved in 1.25 g of solution, so the mass of the solute is:

m_solute = n x M

We also know that the temperature of the solution decreased from 25.1 ⁰C to 20.4 ⁰C, so ΔT = 4.7 K.

The specific heat capacity of water is 4.184 J/g·K, so we can assume that the specific heat capacity of the solution is also 4.184 J/g·K.

Therefore, the heat released or absorbed during the solution process is:

q_solution = 1.25 g x 4.184 J/g·K x 4.7 K = 24.8 J

Now we can use this value to calculate the heat of solution:

ΔH_solution = -q_solution / n

= -24.8 J / 8 mol

= -3.1 J/mol

Therefore,  Note that the negative sign indicates that the solution process is exothermic, i.e., heat is released during the process.

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Answer:

graphite

Explanation:

graphite is also good conductor of electricity

Answer:

A system can be either closed or open: A closed system is a system that is completely isolated from its environment.

An open system is a system that has flows of information, energy, and/or matter between the system and its environment, and which adapts to the exchange.

Explanation:

A is the answers for the question

The product formed in the combustion reaction is generally the oxidized fuel. The combustion reactions are exothermic. The products of the given reaction are CO₂ and H₂O. The correct option is D.

A  chemical reaction in which the fuel undergoes oxidation by reacting with a powerful oxidizing agent which results in the release of energy generally in the form of heat is defined as the combustion. All combustion reaction will not results in fires.

The combustion of LPG fuel which is used for cooking food involves the combustion reaction between the oxygen present in the atmosphere and the liquified petroleum gas. The explosion of fire works also indicates the combustion reaction.

The given reaction is given as:

CH₂(g) + O₂(g) → CO₂(g) + H₂O(g)

The substances on the right-hand side are called the products.

Thus the correct option is D.

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