Which change in oxidation number indicates oxidation? A) Ito +2 C +2 to -3 B) Ito -2 D) +3 to +2

A reaction at equilibrium has no net change, is in a closed system with all reactants and products present, and has the forward and reverse reactions occurring at the same rate.



The statements that describe a reaction at equilibrium are:  B . No net change is occurring. At equilibrium, the forward and reverse reactions are taking place at the same rate, resulting in a balanced state where the concentrations of reactants and products remain constant over time.

C. The system is closed, and all reactants and products are present. Equilibrium is achieved in a closed system where no substances are added or removed. All reactants and products necessary for the reaction are present, maintaining a dynamic balance.   F. The forward and reverse reactions are proceeding at the same rate. At equilibrium, the rates of the forward and reverse reactions are equal, indicating that there is no net change in the concentrations of reactants and products.

These statements collectively capture the essence of a reaction being at equilibrium, where there is a balance between the forward and reverse reactions with no observable changes in the system.

To learn more about equilibrium click here

brainly.com/question/13463225

#SPJ11

Statements B, C, and F accurately describe a chemical reaction that is in equilibrium. No net changes are happening, the system is closed with all reactants and products present, and the forward and reverse reactions are occurring simultaneously at the same rate.

In terms of the given options in the question, the statements B, C, and F accurately describe a reaction that is at equilibrium. B. No net change is occurring means that the concentrations of reactants and products remain constant over time, indicating an equilibrium state. In regards to C. The system is closed, and all reactants and products are present, it's imperative to understand that since the equilibrium state occurs within a closed system, all reactants and products are present. Lastly, F. The forward and reverse reactions are proceeding at the same rate explain that at equilibrium, the forward reaction (conversion of reactants to products) and the reverse reaction (conversion of products back to reactants) occur simultaneously at the same rate, making this a key feature of chemical equilibrium.

https://brainly.com/question/32227445

#SPJ11

Answer:

Protons: C12= 12 Protons, C13=12 Protons and C14=12 Protons

#electrons= 12+0=12 electrons in all Carbon atoms Neutron: C12=0, C13= -1, C14= -2

Atomic mass of C12, C13 and C14= 12

C12, C13, and C14 are called “ISOTOPES”

Explanation:

C-12 ,C-13 and C-14 are called isotopes  with 6 electrons and protons in each of them and number of neutrons is 12,13,14 respectively which also corresponds to their respective atomic mass.

Isotopes are defined as substances containing same number of protons but different number of neutrons.Number of protons is characteristic for determining position of elements in the periodic table.

Since,all isotopes have the same number of protons they all occupy the same position.They have similar chemical properties as they have same number of electrons.

They find applications in the field of nuclear medicine and oil and gas research . There are 2 types of isotopes : stable and unstable

Unstable isotopes are radioactive and are called as radioisotopes.Some of these isotopes are man -made and hence even called as artificial isotopes.Every element has an isotope which is either  can be man-made or natural .

Learn more about isotopes,here:

https://brainly.com/question/27475737

#SPJ2

Answer:

yes it does

Explanation:

because the ratios on the reactants and products are equal

The reaction 2Na(s) + Cl₂(g) → 2NaCl(s) obeys the law of conservation of mass.

Yes, this reaction obeys the law of conservation of mass. The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction; it is only rearranged.

In the given reaction, we have 2 sodium atoms (Na) on the left side and 2 sodium atoms (Na) on the right side. Similarly, we have 2 chlorine molecules (Cl₂) on the left side and 2 chlorine atoms (Cl) on the right side. Therefore, the number of atoms of each element is balanced on both sides of the reaction.

Additionally, the total mass of the reactants (2Na + Cl₂) is equal to the total mass of the product (2NaCl). The coefficients in the balanced equation represent the stoichiometric ratios, ensuring that the mass is conserved.

Hence, the reaction 2Na(s) + Cl₂(g) → 2NaCl(s) obeys the law of conservation of mass.

Learn more about law of conservation of mass from the link given below.

https://brainly.com/question/28711001

#SPJ2

This galvanic cell has a standard cell potential of +1.16 volts. This favorable value denotes a spontaneous reaction in which electrons go from the Cu electrode to the Au electrode.

To find the standard cell potential for the galvanic cell Cu(s) | 1 M Cu(NO₃)₂(aq) || 1 M AuCl₃(aq) | Au(s), we need to compare the standard reduction potentials of the two half-reactions involved.

The reduction half-reaction occurring at the Cu electrode is:

Cu²⁺(aq) + 2e⁻ → Cu(s)      E° = +0.34 V

The reduction half-reaction occurring at the Au electrode is:

Au³⁺(aq) + 3e⁻ → Au(s)      E° = +1.50 V

To determine the overall cell potential, we subtract the reduction potential of the anode (Cu) from the reduction potential of the cathode (Au):

E°cell = E°cathode - E°anode

      = (+1.50 V) - (+0.34 V)

      = +1.16 V

Therefore, the standard cell potential for this galvanic cell is +1.16 volts. This positive value indicates that the reaction is spontaneous, and the electrons flow from the Cu electrode to the Au electrode.

To know more about the galvanic cell refer here :

https://brainly.com/question/30268944#

#SPJ11

There are 12 Hydrogen atoms in 2-methylbutane since its chemical formula is  C₅H₁₂.

The building is seen below in the picture:

In the presence of a chromia-alumina catalyst, 2-methylbutane is catalytically dehydrated to produce isoamylenes, which may then be further dehydrated to produce isoprene. Trans-Bis(triethylphosphine) (hydroxy carbonyl) (phenyl) platinum(II), a metallacarboxylic acid, may also be made using it as a solvent.

An intermediary chemical is 2-methylbutane. It serves as a polystyrene blowing agent and fuel additive. It is employed in the production of polyurethane and polystyrene foam as well as a solvent for polyethylene. Moreover, it is employed to run turbines in a closed loop throughout the geothermal energy generation process.

Learn more about 2-methylbutane here:

https://brainly.com/question/20709119

#SPJ4

The mass/mass percent concentration of protein in the blood plasma is 8.46%.

The mass/mass percent concentration of protein in the blood plasma can be calculated by dividing the mass of the protein by the mass of the blood plasma and multiplying by 100.

Given that the mass of the blood plasma is 10.279 g and the mass of the protein is 0.870 g, we can calculate the mass/mass percent concentration of protein as follows:

(0.870 g protein / 10.279 g blood plasma) * 100 = 8.46%

Therefore, the mass/mass percent concentration of protein in the blood plasma is 8.46%.

To know more about protein visit:-

https://brainly.com/question/33861617

#SPJ11

Answer:

Relative atomic mass of uranium = (238 x 0.50) + (235 x 0.20) + (234 x 0.30) = 236.3

After performing the calculation, the rate constant at 762 K can be determined.

To find the rate constant at 762 K, we can use the Arrhenius equation, which relates the rate constant (k) to the activation energy (Ea) and the temperature (T):

k = A * e^(-Ea/RT)

Where:

k is the rate constant

A is the pre-exponential factor or frequency factor

Ea is the activation energy

R is the ideal gas constant

T is the temperature in Kelvin

We are given the rate constant at 715 K (k1 = 9.87×10^-4 s^-1), and we need to find the rate constant at 762 K (k2).

First, let's calculate the ratio of the rate constants (k1/k2):

k1/k2 = (A * e^(-Ea/(RT1))) / (A * e^(-Ea/(RT2)))

The pre-exponential factor cancels out, and we can simplify the equation to:

k1/k2 = e^((Ea/R) * (1/T2 - 1/T1))

Now, we can rearrange the equation to solve for k2:

k2 = k1 / e^((Ea/R) * (1/T2 - 1/T1))

Plugging in the values:

k1 = 9.87×10^-4 s^-1

Ea = 207 kJ/mol

R = 8.314 J/(mol*K)

T1 = 715 K

T2 = 762 K

We can calculate k2 using the equation above.

Note: The activation energy should be converted to joules (J) to be consistent with the units of the gas constant (R). 207 kJ/mol is equal to 207,000 J/mol.

k2 = (9.87×10^-4 s^-1) / e^((207,000 J/mol) / (8.314 J/(mol*K)) * (1/762 K - 1/715 K))

for more such questions  rate

https://brainly.com/question/24795637

#SPJ11

Answer:

Atomic number is 30

Explanation:

An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.

All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other. For example if neutral atom has 6 protons than it must have 6 electrons. The sum of neutrons and protons is the mass number of an atom it is also called nucleon number,

while the number of protons are number of electrons is the atomic number of an atom.

For example

if an element have 12 neutron and nucleon number is 42 it means the number of protons will be = nucleon number - number of neutrons

42 - 12 = 30

Thus atomic number is 30.

Answer:

30.

Explanation:

The nucleon or mass number is the total of protons and neutrons in the  nucleus.

Atomic number = nucleon number - number of neutrons in the nucleus

= 42 - 12

= 30.

The non-phosphorylated proteins from the non-diseased samples will move further to the anode without the bulky phosphate group attached to a tyrosine. The correct option is C.

Isoelectric focusing (IEF) is a technique used to separate proteins based on their isoelectric points (pI), which is the pH at which a protein has a net neutral charge. During IEF, proteins migrate in an electric field through a pH gradient until they reach a region of the gel where the pH matches their individual pI, resulting in immobilization.

In the context of chronic myelogenous leukemia (CML), where the hyperactive tyrosine protein kinase ABL is involved, the phosphorylation of proteins plays a significant role. Phosphorylation refers to the addition of a phosphate group to a protein. Phosphorylated proteins generally have a different charge distribution compared to non-phosphorylated proteins.

In this scenario, it is likely that protein X, which is suspected to be a target of the hyperactive ABL kinase, would be phosphorylated in the samples with CML. The addition of a phosphate group to the protein alters its charge distribution, leading to a change in its pI. Therefore, the phosphorylated protein X would have a different pI compared to the non-phosphorylated form.

Given this information, we can deduce that the non-phosphorylated proteins from the non-diseased samples would have a lower pI compared to the phosphorylated protein X from the CML samples. Consequently, the non-phosphorylated proteins would migrate further toward the anode in the isoelectric focusing process, as they would be attracted to the region of the gel with a higher positive charge.

This aligns with option C, which states that non-phosphorylated proteins from the non-diseased samples would move further to the anode without the bulky phosphate group attached to a tyrosine.

To know more about non-phosphorylated proteins refer here:

https://brainly.com/question/29472068#

#SPJ11

Overall, the Griswold decision was a significant moment in the history of constitutional law and sparked ongoing debates about the limits of individual privacy rights and the role of the courts in protecting them.

The case of Griswold v Connecticut established a constitutional right to privacy, particularly in the context of contraceptive use. This decision was widely debated, and many conservatives believed that the court's ruling went too far in creating a new right that was not explicitly stated in the Constitution. However, some also believed that the ruling went too far in restricting states' rights to regulate certain aspects of private behavior.
Some critics of the decision argued that it failed to protect and even endangered the right to privacy by creating a precedent for courts to strike down state laws that they believed infringed upon this right. On the other hand, some believed that the ruling should have gone further in limiting and establishing this right to privacy.

to know more about history of constitutional law visit:

https://brainly.com/question/31889440

#SPJ11

According to the Lewis Structure, X could be Boron or Aluminum and Z could be Carbon or Silicon.

We need to identify the elements whose atoms have two and four valence electrons, respectively. The elements in period 3 that have two valence electrons are B (Boron) and Al (Aluminum), while those with four valence electrons are C (Carbon) and Si (Silicon).

Since X has two dots around it, it is either Boron (B) or Aluminum (Al).On the other hand, since Z has four dots, it is either Carbon (C) or Silicon (Si).

Therefore, the elements X and Z are either Boron and Carbon (BC) or Aluminum and Silicon (AlSi).

To know more about Lewis Structure, refer to the link below:

https://brainly.com/question/32254757#

#SPJ11

Answer:

1. Amine.

2. Alcohol.

3. Carboxylic Acid.

4. Halocarbon.

Explanation:

The correct answer according to the tile are Amine, Alcohol, Carboxylic acid, Halocarbon.

How can hydrocarbons be classified based on their structure?

Hydrocarbons can be classified as either aromatic or aliphatic compounds, depending on the presence of a benzene ring.

What is the most common classification of hydrocarbons?

Alkanes are hydrocarbons in which all of the bonds are single bonds. Alkenes are hydrocarbons that contain a carbon-carbon double bond.

Learn more about hydrocarbon here : brainly.com/question/490217

#SPJ2

Answer:

8 glasses of water.

Explanation:

glasses of water a day. That's easy to remember, and it's a reasonable goal.

Most healthy people can stay hydrated by drinking water and other fluids whenever they feel thirsty. For some people, fewer than eight glasses a day might be enough. But other people might need more.

You might need to modify your total fluid intake based on several factors:

Exercise:- If you do any activity that makes you sweat, you need to drink extra water to cover the fluid loss. It's important to drink water before, during and after a workout.

Environment:- Hot or humid weather can make you sweat and requires additional fluid. Dehydration also can occur at high altitudes.

Overall health:- Your body loses fluids when you have a fever, vomiting or diarrhea. Drink more water or follow a doctor's recommendation to drink oral rehydration solutions. Other conditions that might require increased fluid intake include bladder infections and urinary tract stones.

Pregnancy and breast-feeding:- If you are pregnant or breast-feeding, you may need additional fluids to stay hydrated.

The best description for the crystals formed when oxygen freezes at very low temperatures is (e) molecular crystals.

This is because oxygen is a diatomic molecule, meaning it consists of two atoms that are held together by a covalent bond. When oxygen freezes, the molecules arrange themselves in a repeating pattern that forms a solid structure. This structure is held together by intermolecular forces, such as van der Waals forces, rather than by chemical bonds, which is why it is classified as a molecular crystal. Ionic, covalent network, metallic, and amorphous crystals have different types of bonding and structures, which do not apply to the formation of oxygen crystals.
The best description for crystals formed by oxygen (O2) when it freezes at very low temperatures is (e) molecular crystals. Molecular crystals are composed of molecules held together by weak intermolecular forces, such as van der Waals forces or hydrogen bonds. In the case of oxygen, the O2 molecules are covalently bonded within the molecule, but the interactions between the molecules in the crystal are not covalent, making molecular crystals the appropriate classification.

To know about crystals :

https://brainly.com/question/32130991

#SPJ11

The statement that a physical change is a change in matter's form without a corresponding change in its chemical properties is valid.

Physical modifications examples include:

1. changing a substance's condition, like when ice melts to form liquid water or when water boils to form steam

2. altering a substance's dimensions or shape, such as by sawing a piece of wood or shattering a glass

3. combining two or more things, as when you swirl sugar into coffee

4. separating a combination into its constituent elements, as when sand is filtered out of water.

A physical change does not affect the material's atoms or molecules, and the chemical property composition of the substance does not change. By undoing the physical transformation, such as by turning liquid water into ice, the substance can be returned to its former state. It's vital to remember that some changes, like rusting, burning, or rotting, may appear to be physical changes but are actually chemical changes. These alterations in chemical composition and attributes occur as a result of a chemical reaction in which the original ingredients are changed.

To know more about chemical properties please refer: https://brainly.com/question/1935242

#SPJ4

Question - A physical change is a change of matter from one form to another without a change in chemical properties. State true or false.

The formal charges on each of the nitrogen atoms in the N3- ion shown are:

- Middle nitrogen atom: 0

- End nitrogen atoms: -1 (x²)

To calculate the formal charges on each of the nitrogen atoms in the N3- ion shown, we need to first determine the valence electrons of nitrogen. Nitrogen has five valence electrons, so in the N3- ion, there are a total of 15 valence electrons (5 valence electrons per nitrogen atom).

To calculate the formal charge, we need to subtract the number of non-bonded electrons (lone pairs) and half of the bonded electrons from the valence electrons of each nitrogen atom.

For the middle nitrogen atom, it has four non-bonded electrons and two bonded electrons, giving it a formal charge of 0.

For the two end nitrogen atoms, they each have two non-bonded electrons and four bonded electrons, giving them a formal charge of -1.

Overall, the N3- ion has a charge of -3, which is the sum of the formal charges on each nitrogen atom.

In summary, the formal charges on each of the nitrogen atoms in the N3- ion shown are:

- Middle nitrogen atom: 0

- End nitrogen atoms: -1 (x²)

Learn more about N3-ion here,

https://brainly.com/question/11732310

#SPJ11

The Empirical formula of compound is C₁₀H₂₀O₁. The Molecular Formula of compound is C₁₀H₂₀O₁.

Empirical formula is the simplest whole number ratio of atoms present in given compound.

\(\text{Mass of C} = 0.2829\ g\ CO_2 \times \frac{12\ g\ C}{44\ g\ CO_2}\)

                = 0.07720 g C

\(\text{Mass of H} = 0.1159\ g\ H_2O \times \frac{2\ g\ H}{18\ g\ H_2O}\)

                = 0.01297 g H

Mass of O = Mass of methanol - mass of C - mass of O

                 = 0.1005 g - 0.07720 g - 0.01297 g

                 = 0.01033 g

Element    Mass/g         Moles              Ratio      Integers

C                0.07720       0.006428        9.956      10

H                0.01297        0.01287            19.93      20

O                0.01033        0.0006456       1              1              

The Empirical formula of compound is C₁₀H₂₀O₁.

Molecular formula = Empirical formula × n

\(n = \frac{\text{Molar Mass}}{\text{Empirical formula weight}}\)

  \(= \frac{156}{156}\)

  = 1

Molecular formula = n × Empirical formula

                               = 1 (C₁₀H₂₀O₁)

                               = C₁₀H₂₀O₁

Thus from the above conclusion we can say that The Empirical formula of compound is C₁₀H₂₀O₁. The Molecular Formula of compound is C₁₀H₂₀O₁.

Learn more about the Empirical Formula here: brainly.com/question/1603500

#SPJ1

Answer:

H2O2

Explanation:

2 hydrogen, 2 oxygen wikipedia it

Answer:

hey!

Your answer is that the equation for Hydrogen Peroxide is \(H_{2}\)\(O_{2}\)

Explanation:

Its formed when \(H_{2}\)O and \(O_{2}\) react chemically together!

HOPE THIS HELPED!

The reaction is an oxidation-reduction reaction because here Sodium is oxidized from Na to Na⁺ while hydrogen is reduced from H⁺ to H₂⁰.

The reaction below: 3Na(s) + 3H₂O(l)= 3NaOH(aq) + H₂(g)

1. The reaction is an oxidation-reduction reaction because here Sodium is oxidized from Na to Na⁺ while hydrogen is reduced from H⁺ to H₂⁰.

2.  The substances oxidized are Na and reduced. is H⁺.

3. The reducing agent is Na and the oxidizing agent is H₂O.

4.  half ionic equation for the oxidation

  Na => Na⁺ + e⁻

The half ionic equation for the reduction equation.

H₂O + e⁻ => H₂

An oxidation-reduction reaction is any chemical response in which the oxidation number of a molecule, atom, or ion changes by way of gaining or losing an electron. Redox reactions are common and crucial to some of the basic features of lifestyles, such as photosynthesis, respiration, combustion, and corrosion or rusting.

Oxidation is a chemical procedure. it is defined as a method that occurs whilst atoms or agencies of atoms lose electrons. some other manner to define oxidation is when a chemical species gains oxygen or loses hydrogen. whilst these activities occur, oxidation takes area.

Learn more about the oxidation-reduction reactions here:-https://brainly.com/question/17136827

#SPJ9

Answer:According to Dalton's law of partial pressures, the total pressure is equal to the sum of the partial pressures of each gas.  In equation form, this looks like this ...

Pt = P1 + P2 + ...

Pt = total pressure

P1 = partial pressure of gas 1

P2 = partial pressure of gas 2

Explanation:

Answer:

Explanation:

You can view more details on each measurement unit: molecular weight of Copper(I) Oxide or grams The molecular formula for Copper(I) Oxide is Cu2O. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Copper(I) Oxide, or 143.0914 grams.

Answer:

200 kPa

(it is actually 199.999, but rounding up it is 200)

hope this helps!

Answer:

1500 Torr is  about 200 kPa

25.4 grams of glucose are used to make 400ml of the bile aesculin medium.

Bile aesculin medium is defined as a differential media for isolation and identification of group D Streptococci from food and pharmaceutical products. The Composition of this are Peptone, Meat extract B, Bile                  Ferric citrate, Agar. It contains aesculin ferric citrate to provide ferric ions and 4% ox bile to inhibit most other strains of non-group D streptococci. These salts inhibit the accompanying gram-positive bacteria. These salts are the selective ingredient while aesculin is the differential component. This is hydrolyzed by group D streptococci and other aesculin positive organism to form dextrose and esculetin.

For 500 ml , 31.75 grams are used .

Which means for 1 ml   = 31.75 / 500 grams are used

For 400 ml =  31.75 / 500 × 400

                  =  31.75 / 5 ×4

                  =25.4.      

To learn more about Bile aesculin medium

https://brainly.com/question/13021670

#SPJ4

Answer:

71.85 moles

5.99 moles

O.17 moles

Explanation:

vzl

Answer:

4th option: 0.17 moles

Explanation:

The number of moles of a substance can be calculated using the following formula: Mole= Mass ÷Mr

The Mr of a compound is its molecular weight, which is the sum of the relative atomic masses of the atoms it is made up of.

Find the Mr using the periodic table:

Mr of FeO

= 55.8 +16

= 71.8

Calculate number of moles:

Amount of FeO

= 12 ÷71.8

= 0.17 moles (2 d.p.)

To learn more about moles, check out: https://brainly.com/question/19294448

d. The polymorphic form of fat crystals is in a glassy state is NOT true.

The statement that the polymorphic form of fat crystals is in a glassy state is not true. Polymorphism refers to the ability of a substance to exist in multiple crystal structures or forms. Lipids, including fats, can exhibit polymorphism, meaning they can crystallize in different arrangements or crystal forms.

When it comes to the texture of foods containing lipids, the polymorphic form of fat crystals does play a significant role. The specific crystal form and arrangement of the lipids can affect the texture of the food, influencing factors such as mouthfeel, creaminess, and stability.

The solid fat content versus temperature profile is an essential factor in determining texture, as stated in option a. The morphology of the crystals formed, as mentioned in option b, also plays a crucial role in texture. Option c is true as well, as foods containing partially crystalline lipids can exhibit a "plastic" texture.

However, option d is not accurate because the polymorphic form of fat crystals can exist in various states, including crystalline and semi-crystalline states, but not in a glassy state. Glassy states are typically associated with amorphous materials rather than crystalline structures.

To learn more about lipids, here

https://brainly.com/question/14915606

#SPJ4

The four elements that comprise approximately 96% of our body weight are carbon, oxygen, hydrogen, and nitrogen.

The mass of our bodies is composed almost entirely of carbon, hydrogen, oxygen, and nitrogen. The remaining four percent of a person's body weight is almost entirely made up of the elements sodium, potassium, magnesium, calcium, iron, phosphorus, sulfur, chlorine, and iodine.

To all intents and purposes, the human body is a phenomenally complicated piece of machinery. This demands a wide variety of components, all of which must cooperate with one another in intricately intertwined connections, on scales ranging from the micromolecular to the macromolecular.

The amount of chemical elements and how they interact with one another is what determines the structure of the building blocks that make up the sum of these parts, such as proteins and nucleic acids.

Want to know more about elements visit the link which is given below;

https://brainly.com/question/29794315

#SPJ4

The observation or inference that a frog is an amphibian because they can live both on land and in water is a correct inference based on the characteristics of amphibians.

1. Amphibians are a group of cold-blooded vertebrates that have the ability to live both on land and in water. They are characterized by their unique life cycle, starting as aquatic larvae and then transitioning into terrestrial adults.

2. One of the defining features of amphibians is their ability to respire through their skin. This adaptation allows them to absorb oxygen from both air and water, enabling them to survive in different environments.

3. Frogs, being amphibians, possess this characteristic. They have a moist and permeable skin that allows them to exchange gases with their surroundings, whether it's in water or on land.

4. Frogs spend their early life stages as aquatic larvae, commonly known as tadpoles, before undergoing metamorphosis into fully formed adults. During this transition, they develop lungs to supplement their skin respiration and adapt to a more terrestrial lifestyle.

In conclusion, the observation or inference that a frog is an amphibian because they can live both on land and in water is accurate. It is based on the characteristics of amphibians, including their ability to respire through their skin and their life cycle that involves both aquatic and terrestrial stages.

learn more about amphibian

https://brainly.com/question/27961653

#SPJ11