What is the pOH of a solution with a hydroxide ion, [OH-], of 7.34 X 10-³ M?

Answer:

chemical change in step one and a physical change in step two.

Explanation:

The physical change is a reversible one whereas the chemical change is a irreversible one. Here  a chemical change in step 1 and a physical change in step 2 had been taken place. The correct option is A.

When a substance is subjected to a physical change, its composition remains the same despite its molecules being rearranged. In a chemical change, the molecular composition of a substance is changed entirely and involves the formation of new substances.

A physical change affects only physical properties like size, shape, etc. whereas a chemical change affects both physical and chemical properties.

Thus for the experiment option A is correct.

To know more about physical change, visit;

https://brainly.com/question/28742279

#SPJ7

Answer:

D

Explanation:

Hope this helped!

Answer: game stop and mind games

Explanation:

i live near there

The new molarity of the solution is 0.5M.

The molarity of a solution can be calculated by using the following expression:

C1V1 = C2V2

Where;

According to this question, a chemist dilutes 2.0 L of a 1.5 M solution with water until the final volume is 6.0 L.

1.5 × 2 = 6 × C2

3 = 6C2

C2 = 3/6 = 0.5M

Therefore, the new molarity of the solution is 0.5M.

Learn more about molarity at: https://brainly.com/question/12127540

The ways to  make a skit are:

In skit making, one can start by coming up with humorous concepts for your skit. Write out your scenario, practice it, and then perform it in front of an audience or record it. Then Continue to create fresh drafts.

Note that one can ask someone you trust's opinion should see your sketch. Then make a note of what people found amusing and not amusing.

Therefore, skit  is seen as short comedy show that can be performed by second graders.

Learn more about video making from

https://brainly.com/question/26957083

#SPJ1

Answer:

See Explanation

Explanation:

a) In writing the balanced chemical reaction equation, the number of atoms of each element on the right hand side must be the same as the number of atoms of each element on the left hand side. The balanced reaction equation is;

2AgNO3(aq) + CaCl2(aq) ------> 2AgCl(s) + Ca(NO3)2(aq)

b) The total ionic equation shows all the ions present in the reaction system as follows;

2Ag^+(aq) + 2NO3^-(aq) + Ca^2+(aq) + 2Cl^-(aq) ---->2AgCl(s) + Ca^2+(aq) + 2NO3^-(aq)

c) The net ionic equation shows the ions that really participated in the reaction;

2Ag^+(aq) + 2Cl^-(aq) ---->2AgCl(s)

d) The spectator ions didn't undergo any change from left to right in the reaction equation. They include;

NO3^-(aq) and  Ca^2+(aq)

The student observed the solution before it wind put into the flame and realized it was similar in texture and colour to,  the lithium chloride the teacher showed them. When they  saw that both lithium chloride and the unknown produced a red flame, they were sure that the unknown must have been lithium chloride as well

A compound refers to a substance consisting of identical molecules composed of atoms of two or more chemical elements.  That is called a chemical compound. A chemical compound means a chemical substance consisting of several similar molecules containing elements of several elements.

Most notably, these molecules are linked by chemical bonds.  A chemical formula expresses the number of atoms of each element in a molecule of a compound. In addition, this chemical formula uses standard abbreviations for chemical elements with numerical signatures.

To learn more about chemical compound, visit;

https://brainly.com/question/26487468

#SPJ13

The Lewis symbol for Be2+ is Be2+.

Beryllium is a neutral element that means the no. of electron sand no. of protons they are same. It has two valence electrons. Be lost two negative charges. They will lose two electrons. Be having most stable electronic configuration.

Beryllium is a steel gray metal which is quite brittle at a room temperature, and its chemical properties somewhat resemble with aluminum. They do not occur in a free nature. Be are used in many industries like; Ceramic manufacturing, automotive as well as areospace. Be is a group 1 carcinogen. It is a divalent element which occurs naturally only in combination with the other elements to form a mineral.

To know more about symbol here

https://brainly.com/question/13868256

#SPJ4

The correct answer is "Convexity has high value when investors expect that market yields will not change much." This statement is incorrect about the convexity term of a bond.

Convexity is the curvature of the price-yield relationship of a bond and a measure of how bond prices react to interest rate shifts.

Convexity is a term used in bond markets to describe the shape of a bond's yield curve as it changes in response to a shift in interest rates.

Bond traders use the convexity term to estimate the effect of interest rate changes on bond prices more precisely.

Bond traders use the term convexity to measure the rate of change of duration, which is a measure of a bond's interest rate sensitivity.

Convexity term and its features Convexity is always positive for a plain-vanilla bond.

We can improve the estimation of a price change with regard to a change in interest rates by accounting for the convexity of the bond.

Convexity is higher when market yields are unstable or when the bond has more extended maturity and lower coupon rates.

Thus, the correct statement about the convexity term of a bond is:

Convexity is higher when market yields are unstable or when the bond has more extended maturity and lower coupon rates.

To know more about Convexity visit;

https://brainly.com/question/31834216

#SPJ11

A creative signal transduction system that utilizes first messenger like hormone X, second messenger like calcium +2, third messenger like cAMP and fourth messenger like protein kinase A is as follows : 1) Hormone X was the first messenger.

Consider that the first messenger in this system is hormone X. A signaling substance called hormone X attaches to a particular receptor on the cell membrane. 2)Calcium (Ca2+) is a second messenger. Hormone X releases calcium ions (Ca2+) from intracellular reserves when it binds to its receptor.

The second messenger in this system is calcium. 3) cAMP (cyclic adenosine monophosphate) is the third messenger. Adenylyl cyclase, an enzyme, is activated by the elevated calcium levels and transforms ATP (adenosine triphosphate) into cAMP (cyclic adenosine monophosphate).

The third messenger in this route is cAMP. 4) the Protein Kinase A (PKA) fourth messengerProtein kinase A (PKA), an enzyme that phosphorylates target proteins, is triggered by the high amounts of cAMP. The fourth messenger in this signaling chain is PKA.

Let's now list the actions involved in this signal transduction system: The receptor for hormone X is located on the cell membrane. Hormone X binding triggers a signaling cascade, which causes calcium ions (Ca2+) to be released from intracellular storage.

Adenylyl cyclase is triggered by elevated calcium levels and turns ATP into cAMP. Protein kinase A (PKA) is activated by increased cAMP levels. Specific target proteins are phosphorylated by PKA, which causes a variety of physiological reactions and downstream effects.

Although this is a hypothetical example, it follows the general rules of signal transduction systems that are present in biological systems. actual signal transduction pathways in real organisms, a large variety of messengers and chemicals can be involved, making them complex.

2. A crucial aspect of neuronal communication is the chemical transport of signals across synapse. Here is a step-by-step explanation of what happens: a) Arrival of Action Potential: The presynaptic terminal of the neuron sending the message receives an action potential, an electrical signal.

When the neuron's membrane potential exceeds a certain level, this action potential is produced. b) Presynaptic terminal depolarization is a result of the action potential's arrival at the presynaptic terminal. The presynaptic membrane's voltage-gated calcium channels open.

c) Calcium Influx: Calcium ions (Ca2+) can enter the presynaptic terminal when voltage-gated calcium channels open. The cytoplasm of the presynaptic terminal receives calcium ions as they migrate down the gradient of their concentration from the extracellular environment.

d) Release of Neurotransmitters: Vesicles containing neurotransmitters fuse with the presynaptic membrane as a result of calcium influx. The synaptic cleft, which is the minuscule space between the presynaptic terminal and the postsynaptic membrane, is where the neurotransmitters are released as a result of this fusion.

e) Neurotransmitter Diffusion: Across the synaptic cleft, the released neurotransmitters spread out. They pass through the narrow opening to travel to the postsynaptic membrane, which is home to the following neuron or target cell.

After passing through the postsynaptic membrane, the neurotransmitters attach to particular receptors on the surface of the postsynaptic neuron or target cell. Typically, these receptors are proteins incorporated into the postsynaptic membrane.

f) Postsynaptic reaction: A reaction in the postsynaptic neuron or target cell is brought on by the binding of neurotransmitters to their receptors. This reaction may be either excitatory, resulting in depolarization and a higher probability of an action potential, or inhibitory.

g) Reuptake: After the neurotransmitters have had their impact, they can be eliminated from the synaptic cleft via reuptake or enzyme breakdown. Reuptake is a typical mechanism where the presynaptic terminal pulls the neurotransmitters back up for reuse.

h) Transmission: of the signal is terminated by the removal or deactivation of neurotransmitters in the synaptic cleft. When another action potential occurs, the postsynaptic neuron goes back to its resting state and the process is ready to continue.

Overall, chemical transmission across a synapse entails the release, diffusion, and binding of neurotransmitters to receptors, which results in a response in the postsynaptic neuron or target cell and, eventually, permits communication between neurons in the nervous system.

to know more about neurotransmitters refer to the link below

https://brainly.com/question/840056

#SPJ4

The relative rate of change for each species in the given reaction can be determined using the stoichiometry of the reaction. From the balanced equation A + 3B ⟶ 2C, we can determine the ratio of the coefficients to find the relative rate of change of each species.

Let's assume Δ[A]/Δt represents the rate of change of species A, Δ[B]/Δt represents the rate of change of species B, and Δ[C]/Δt represents the rate of change of species C.

From the stoichiometry, we can determine the following ratios:

Δ[A]/Δt = -1/1 * (0.900 M/s) = -0.900 M/s

Δ[B]/Δt = -3/1 * (0.900 M/s) = -2.700 M/s

Δ[C]/Δt = 2/1 * (0.900 M/s) = 1.800 M/s

Therefore, the relative rate of change for each species in the reaction is as follows:

Δ[A]/Δt = -0.900 M/s

Δ[B]/Δt = -2.700 M/s

Δ[C]/Δt = 1.800 M/s

In summary, based on the stoichiometry of the reaction, we can determine the relative rate of change for each species by multiplying the rate of the overall reaction by the respective stoichiometric coefficients.

To learn more about  stoichiometry click here:

brainly.com/question/31982205

#SPJ11

Answer:

Z

Explanation:

When the force become stronger, the acceleration becomes larger and the velocity changes by a wider margin.

We know that the force is that which makes motion to occur. In other words, an object would continue in its state of rest or uniform motion unless it is acted upon by an external force.

We know that the stronger the force the greater the acceleration since force is directly proportional to the acceleration of a body. Given this statement, it is important to also know that acceleration is the change of velocity with time.

When the force become stronger, the acceleration becomes larger and the velocity changes by a wider margin.

Learn more about force:https://brainly.com/question/13191643

#SPJ1

Answer:

9.0 mol Na2SO4

Explanation:

Answer: 4

Explanation:

The Omnipotent view of management refers to the belief that managers are directly responsible for an organization's success or failure. According to this view, managers have the power and control to make decisions that will significantly impact the organization's performance.

In terms of the organizational environment, ABC CO needs to focus on several aspects. Firstly, it should prioritize building strong relationships with customers by understanding their needs and delivering value through its products or services. Secondly, maintaining good relationships with suppliers is crucial to ensure a reliable supply chain and access to necessary resources. Thirdly, keeping a close eye on competitors is essential to stay competitive and identify opportunities for differentiation. Lastly, monitoring and adapting to economic, legal, and socio-cultural factors is vital to ensure compliance with regulations and aligning the organization with societal trends and expectations.

In conclusion, the Omnipotent view of management emphasizes the influence of managers in shaping organizational outcomes, while the Symbolic view recognizes the significance of external factors. For the current state of ABC CO, a balanced approach that considers both internal and external factors would be beneficial. The culture should promote collaboration, innovation, and adaptability, while the organization should focus on building strong relationships with customers, suppliers, and competitors while adapting to the economic, legal, and socio-cultural environment.

To know more about power  Visit;

https://brainly.com/question/13931313

#SPJ11

The given information refers to a scientific article titled "A CCSD(T) Investigation of Carbonyl Oxide and Dioxirane" authored by Cremer, D., Gauss, J., Kraka, E., Stanton, J. F., and Bartlett, R. J., published in the journal Chemical Physics Letters in 1993, with the volume number 209 and pages 547-556.

The mentioned article focuses on a computational study using the CCSD(T) method to investigate carbonyl oxide and dioxirane. The authors explore various aspects such as equilibrium geometries, dipole moments, infrared spectra, heats of formation, and isomerization energies associated with these compounds. By employing advanced computational techniques, they aim to provide insights into the molecular properties and behavior of carbonyl oxide and dioxirane, which have relevance in the field of chemical physics.

The CCSD(T) method is a high-level quantum mechanical approach used to accurately describe the electronic structure and properties of molecules. Through this study, the authors aim to contribute to the understanding of the structures, properties, and reactivity of carbonyl oxide and dioxirane. The investigation of these compounds is important for gaining insights into their potential applications in various chemical processes and reactions.

Overall, the article by Cremer, Gauss, Kraka, Stanton, and Bartlett provides valuable information about the theoretical investigation of carbonyl oxide and dioxirane, shedding light on their characteristics and behavior at the molecular level.

Learn more about scientific articles

brainly.com/question/10454195

#SPJ11.

Answer:

It should be 28 degrees C

Explanation:

Answer:

28°C

Explanation:

. Its nucleus is unstable.

Its nucleus is unstable. This characterizes a radioactive atom. Therefore, the correct option is option A.

The smallest parts of common stuff that can be separated without releasing electrically charged particles are called atoms. The atoms are divided into two sections. an electron cloud and an atomic nucleus. Atoms with an unstable nucleus and the potential for radioactive decay are referred to as radioactive atoms.

As only nuclei often experience decay and changes with electron configuration only come from nucleus configuration changes, the term "radioactive atom" is misleading. This isn't a rule, it must be said. As a parent nucleus needs capture any of its orbital electrons, the electron cloud also plays a significant role in the case of electron capture. Its nucleus is unstable. This characterizes a radioactive atom.

Therefore, the correct option is option A.

To know more about radioactive atom, here:

https://brainly.com/question/13673451

#SPJ7

Two isotopes of the same element only have these differences: atomic mass

Isotopes are forms of an element that have the same number of protons and electrons but differing numbers of neutrons. The various isotopes of an element have varying weights depending on the amount of neutrons present in each isotope.

Chemically speaking, an element's isotopes are nearly or completely identical. The chemical behaviours of several isotopes are quite similar. But each isotope has a unique set of physical characteristics, including as mass, melting or boiling temperature, density, and freezing point. Any isotope's physical characteristics are mostly influenced by its mass.

To learn more about isotopes https://brainly.com/question/14220416

#SPJ4

Answer:

chemical and acidric

Explanation:

hope it's help make me brainless pls

Answer:  I'm not sure but these may help!

Explanation: querer, perder - (e) changes to (ie) Quiero comer. I want to eat.

pedir - (e) changes to (i) Yo pido agua. I ask for water

jugar - (u) changes to (ue) Yo juego con el perro. I play with the dog.

Answer:

0.84kg of gatorade powder is needed.

Explanation:

From the question given above, we were told that the team manager mixes 0.6kg of gatorade powder with 5 gallons of water.

Now, to obtain the desired amount of the powder of gatorade needed for 7 gallons of water, we simply do the following:

If 0.6kg of gatorade powder required 5 gallons of water,

Then Xg of gatorade will require 7 gallons of water i.e

Xg of gatorade = (0.6 x 7)/5

Xg of gatorade = 0.84kg

Therefore, to maintain the same gatorade mixture, the team manager must mix 0.84kg of gatorade powder with the 7 gallons of water.

The decomposition reaction among the options provided is option 1. NH4Cl → NH3 + HCl.

In a decomposition reaction, a single compound breaks down into two or more simpler substances. In this case, NH4Cl (ammonium chloride) decomposes into NH3 (ammonia) and HCl (hydrochloric acid).

Among the given options, only reaction 1 fits the definition of a decomposition reaction. The other reactions involve the combination of substances (reactions 2 and 3), the combustion of methane (reaction 4), or a double displacement reaction (reaction 5). Decomposition reactions are characterized by the breakdown of a compound into simpler constituents, which is exemplified by the reaction NH4Cl → NH3 + HCl.

To know more about decomposition reaction click here:

https://brainly.com/question/14024847

#SPJ11

Answer:

Yes.

Explanation:

Because distillation separates substances based on their different boiling points.

Answer:

Yes, distillation can be used.

Answer: bạn viết phương trình Phenol + NaOH

=> nNaOH = nPhenol = 0,2 mol

m Phenol = 0,2x94 = 18,8 gam

%mPhenol = 18,8/28,9% = 65,05

Explanation:

All of the progeny of two flowers with genotype Ss will have tips of the stem flowers.

Every of their descendants will have a 50% chance of inheriting a widow's peak (dominant trait) and a 50% chance of not receiving a widow's peak if one parent has a widow's peak and the other parent does not (genotype Pp) (recessive trait).

25% of the progeny of two flowers with genotype Ss will have blossoms on the side of the stalk (recessive trait).

To know more about the genotype visit:

https://brainly.com/question/25281070

#SPJ1

Consider the model of a sodium atom. An orange circle labeled upper n a is surrounded by three concentric circles. The innermost ring has dots at the north and south positions. The next ring has eight dots, evenly spaced, with dots aligning with those in the inner ring. The outermost ring has one dot at the north position. The distribution of electrons in different shells feature does the model show accurately.

Sodium is a chemical element with the atomic number 11 and the symbol Na (derived from the Latin natrium). It is a delicate, silvery-white metal that is exceedingly reactive. Due to its placement in group 1 of the periodic table, sodium is an alkali metal. 23Na is the only stable isotope of it.

The periodic table's chemical element sodium has the atom number 11 and the symbol Na (Natrium in Latin). Alkali metals include the soft, waxy, silvery sodium, which is a reactive metal that occurs frequently in natural substances (especially halite).

Alkali metal group (Group 1 [Ia]) element sodium (Na), according to the periodic table. The element sodium is a very delicate silvery-white.

Learn more about sodium atom:

https://brainly.com/question/25033306

#SPJ4

The complete question is ''Consider the model of a sodium atom. An orange circle labeled upper N a is surrounded by three concentric circles. The innermost ring has dots at the north and south positions. The next ring has eight dots, evenly spaced, with dots aligning with those in the inner ring. The outermost ring has one dot at the north position. Which feature does the model show accurately?

A) the size of the electrons in different shells

B) the shapes of the orbitals in different shells

C)the distribution of electrons in different shells

D)the orientation of the orbitals in different shells