the pH of a solution of a is increased from 2 to 3 then the concentration of h + ions will become​

Answer:

Protons and neutrons

Explanation:

In the nucleus of an atom only the protons and neutrons are present. The extra-nuclear space is filled with electrons which are negatively charged.

Only two of the subatomic particles are found in the nucleus of an atom. The particles are protons and neutrons.

Answer:

Protons and Neutrons

Explanation:

Mass of oxygen in cylinder is 142.2 g

Given,

Volume: 7.00 l

Pressure: 16 atm

temperature: 32.8⁰c = 32.8+273.15 = 305.95K

Mass of oxygen in cylinder = ?

By Ideal gas law,

PV = nRT

PV = (mass/molar mass) RT

molar mass: 32g/mol

R = 0.0826

so,

16 × 7 = (mass/32) × 0.0826 × 305.95

Mass = 142.2g

therefore oxygen present inside the cylinder is 142.2 g in mass.

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The reactions involved in producing larger compounds from smaller compounds is called anabolism.

It is a biochemical process in which simple compounds join to form larger and complex compounds. This is why it is considered a building-up aspect of metabolism.

Anabolism does not initialize on its own because it is non-spontaneous. It requires energy in initializing. Anabolism is vital for the cell as its development, growth, and maintenance depend on it. Cells also use the anabolic process to make and repair tissues.

For example, the Formation of disaccharides and water by combining sugars, and the reaction of glycerol with fatty acids to form lipids.

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Answer:

cold front

Explanation:

Answer:

3.67 L

Explanation:

From the question given above, the following data were obtained:

Initial temperature (T1) = 300 K

Initial volume (V1) = 4 L

Final temperature (T2) = 275 K

Final volume (V2) =?

Thus, we can obtain the final volume (i.e the new volume) of the balloon by using the Charles law equation as shown below:

V1 /T1 = V2 /T2

4/300 = V2/275

Cross multiply

300 × V2 = 4 × 275

300 × V2 = 1100

Divide both side by 300

V2 = 1100 / 300

V2 = 3.67 L

Therefore, the new volume of the balloon is 3.67 L

Mxene as electro catalyst also have shown productive outcomes and stable performances due to their prominent electrical conductivity and hydrophilic surface.

Mxene are a class of two dimensional inorganic compound called mxene. because of its origin from the process of etching and exfoliating. automatically thin layers of aluminum from layered carbides. oxygen evolution reaction (OER) is cornerstone reaction of many renewable energy technologies. Cost-effective yet efficient electro catalysts are critical to overcome the high overpotential and sluggish kinetics of this process new type of non-precious metal electro catalyst for OER by synergistically coupling layered double hydroxides (LDH) with two-dimensional (2D) mxene with high conductivity and active surface.

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Modern model of the atom states that an atom is made up of a core nucleus around which protons, neutrons, and electrons are in highly probable orbits.

The fundamental unit of chemistry is the atom. It is the smallest particle that can be separated into matter without releasing electrically charged particles.

Additionally, it is the smallest piece of matter with the characteristics of a chemical element.

Thus,  Modern model of the atom states that an atom is made up of a core nucleus around which protons, neutrons, and electrons are in highly probable orbits.

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I think the answer would be

Dilution of a buffer solution with a small amount of water will not change the ph of the solution.

Hope this helps

There will be no change in the pH of buffer solution because the pH of a buffer will be constant always. And it makes the solution in a certain pH.

A buffer solution is the solution with constant pH used t maintain the pH of a solution in a certain value. There are both basic and acidic buffers. Basic buffer is made by mixing a weak base with its salt and it maintains the basic pH.

An acidic buffer is made by mixing a weak acid with its salt and used to maintain the acidic pH. Buffer solution will not change in pH on addition of water or acid or any base.

On each dilution the buffer will make the added concentration of acid and base in equal. Like if we added water the release H+ ion will be consumed by the basic buffer and maintain the pH.

Hence, upon dilution by water, the pH of buffer solution does not change.

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The mass of olive oil : 690 g

Density is a quantity derived from the mass and volume  

Density is the ratio of mass per unit volume  

Density formula:  

[tex]\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}[/tex]

ρ = density  

m = mass  

v = volume  

Given

volume of olive oil = V=750 ml

density of olive oil = ρ = 0.92 g/ml

Required

the mass of olive oil

Analysis

the formula :

[tex]\tt m=\rho\times V[/tex]

Solution

[tex]\tt m=0.92\times 750\\\\m=690~g[/tex]

Paraphrase

the mass of olive oil : 690 g

Answer:

They help stablize the strucure of an atom.

Explanation:

Take into consider isotopes where there are more or less than the ideal amount of neurtrons. These isotopes are radioactive and unstable to the point hey are used as atomic bombs. So with the proper amount of nuetrons it helps the atom maintain structure and not degrade

Answer: they have an important role to keep the atom stable

Explanation:

since protons are positively charged, there is an incredibly strong repulsive force between all the protons in a nucleus

In my opinion, the channel on Mars was formed by flowing lava because the presence of water is not possible in the intense environment of Mars.

A channel on Mars wasn't done by liquid water but it was built by molten lava according to the study of surface features on Mars. We know that water quantity is very low on the planet Mars so there is very little chance of making of these channels due to flowing of water but we can say that the channels are produced by flowing of lave because there are large number of mountain regions on Mars which erupts lava when the Mars was formed. So there is a strong evidence for the formation of channels on the Mars due to flowing lave.

So we can conclude that In my opinion, the channel on Mars was formed by flowing lava because the presence of water is not possible in the intense environment of Mars.

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Answer:

C

Explanation:

The answer is in the image.

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Walk in faith and trust in God!

Answer:the attraction between positive metal ions and interlocking electrons

Explanation: because I got it right

Answer:

It's the atomic weight for that particular element, atomic weight is just the number of protons in the element

Explanation:

okay have a good day!

The number of proton is the atomic number of an element. Every element has a unique atomic number.

Answer:

the number of proton is equal

Lead chromate (PbCrO4) is the solid precipitate formed from the reaction of lead nitrate and sodium chromate.

A precipitate is a compound that comes out of a liquid solution and it insoluble. The chemical substance which causes the formation of solid to form is called the precipitant. Lead chromate (PbCrO4) is as hard as a brick.

The chemical equation of the reaction is:

            Pb (NO3)2 + NA2CrO4 → Pb (CrO4) + 2Na (NO3)

This reaction is known as Double Displacement or Metathesis. Lead chromate emerges as a solid precipitate with a yellow color.

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Pi bonds, on the other hand, are ties between p-orbitals on nearby atoms. The two pi bonds in an alkyne are also perpendicular since the p-orbitals are by definition parallel to one another.

Alkynes are defined as molecules with a triple bond between two carbon atoms. One bond and two bonds combine to form the triple bond.

Alkynes are hydrocarbons that have triple bonds between carbon atoms. When it comes to molecules with one triple bond, their usual formula is CnH2n-2 (and no rings).

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Answer:

A) 4 and 3

Explanation:

You don't count the scientific notations in his problem sine they are only trailing zeros which they don't count as sig figs so look at the original numbers. Remember that zeros after decimal points or in-between natural numbers count with that said 2.020 has 4 sig figs and 5.00 has 3 sig figs

Answer:

0.412 moles

Explanation:

No of moles =given mass /molar mass

30.56/74=0.412 moles

Note these are the number of moles of

Ca(OH)2 not Ca(OH)

Answer:b

Explanation: Edge 22

Chemical splash goggles or face shields should be worn when there is a risk of splashing hazardous materials or flying particles.

Put on this protective gear before dealing with hazardous chemicals in a lab to protect your face and eyes.

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Hydrogen bond exemplifies a weak chemical bond.

Therefore, among all these bonds hydrogen bond is the weakest.

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Answer:

sugar i believe

Explanation:

When immerse the egg in the vinegar then we see 'bubbles on the shell'

Here given data is when we immerse the egg in the vinegar then soak this egg shell in vinegar and in that chemical reaction will start because in vinegar acetic acid are seen and that dissolve calcium carbonate shell and  the acetic acid reacts with the calcium carbonate in the egg shell and releases carbon dioxide gas that you see as bubbles on the shell after an hour we will back then egg shell are soaked by vinegar

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Answer:

degree of hotness or coldness measured on a definite scale.  the degree of heat that is natural to the body of a living being. abnormally high body heat running a temperature.

Explanation:

Answer:

degree of hotness or coldness measured on a definite scale.

Explanation:

Answer:

Cell expansion and an increase in turgor pressure is due to inward diffusion of water into the cell, and turgor pressure increases due to the increasing volume of vacuolar sap. A growing root cell's turgor pressure can be up to 0.6 MPa, which is over three times that of a car tire.

Explanation...read that and you will have a sucess

If a mixture of 0.0333 g of hydrogen and 0.0165 mol of oxygen in a closed container is sparked to initiate a reaction. 0.2976 grams of water will be formed.

If the hydrogen reacted has a mass of 0.0333 g. then

Molar mass = m / n

2.016 g/mol = 0.0333 g / n

n = 0.01651785714 mol [tex]H_{2}[/tex]

According to the actual reaction to make water:

[tex]2H_{2} +O_{2} = 2H_{2}O[/tex]

To produce two molecules of water ([tex]H_{2}O[/tex]), two molecules of diatomic hydrogen ([tex]H_{2}[/tex]) must be combined with one molecule of diatomic oxygen ([tex]O_{2}[/tex]) and energy will be released in the process. And to complete the process, one from the reactant side must be in equilibrium with the other or in excess.

If the number of moles of 0.0333 g of [tex]H_{2}[/tex] is 0.0165, then it only needs 0.00826 mol of [tex]O_{2}[/tex] to form 0.0165 mol of water. (oxygen is in excess)

[tex]n_{H_{2} } : n_{O_{2} } :n_{H_{2}O } =[/tex] 2 : 1 : 2

= 0.0165 : 0.00826 : 0.0165

If the water produced is 0.0165 mol, then its mass is:

Molar mass = m / n

18.01528 g/mol = m / 0.01651785714 mol

m = 0.2975738214 g

m = 0.2976 g

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Answer:

Depending on the ambient conditions, oil or natural gas develops. Today’s sources of fossil fuels are between 15 and 600 million years old. During this period the continental plates shifted, transforming oceans into landmasses, with the result that mineral deposits can be found both on land and at sea.

Explanation:

The following is given out by the particles undergoing these types of decay;

A. Alpha - Helium nucleus 4/2He

B. Beta  - An electron 0/-1 e

C. Gamma - A gamma ray 0/0 γ

We know that the term radioactivity is the term that we often use to describe the spontaneous disintegration of the atoms of a substance which often leads to the formation of a new substances an the release of energy. The process by which the radioactive atoms are broken down is what we call the process of radioactive decay.

Now we know that radioactive decay is a very important process and was developed largely due to the research of the scientist that is called Maria Curie.

The following is given out by the particles undergoing these types of decay;

A. Alpha - Helium nucleus 4/2He

B. Beta  - An electron 0/-1 e

C. Gamma - A gamma ray 0/0 γ

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Answer:

Low luster, can conduct electricity

has a high luster and is very brittle