Use the portion of the periodic table shown at the bottom to answer the questions.

Part 1: Name two elements that have the same properties as magnesium (Mg).
Part 2: Determine the number of protons, electrons, and neutrons present in an atom of potassium (K). Explain how you determined your answer using complete sentences.

The relative atomic mass of an element is the mass of its atoms with Carbon element.

The atomic mass of an element is defined as the average mass of the element.

Atomic mass is also defined as the mass of nucleus or it is the sum of atomic number and number of neutrons present in the atom of an element.

Relative atomic mass is defined as the atomic mass compared to One-twelvth the mass of the one atom of carbon. Since, it is seen that it is comparison of atomic mass with 1/12 the mass of an atom of carbon therefore it is indicated as relative atomic mass.

Thus, we concluded that the relative atomic mass of an element is the 1/12 the mass of its atoms with Carbon element.

learn more about Relative atomic mass:

https://brainly.com/question/13592373

#SPJ9

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.

Know more about electro catalytic oxygen evolution by synergistically coupling layered double hydroxide with mxene

https://brainly.com/question/28463319

#SPJ4

Answer:

b

Explanation:

and if that wrong let me know cause jm my science class its b

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.

Learn more about Mars here: https://brainly.com/question/644043

#SPJ1

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

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:

Answer:

sugar i believe

Explanation:

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:

cold front

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

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

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.

Learn more about ideal gas law here:

https://brainly.com/question/25290815

#SPJ4

Answer:

Say Sofa and king ten times in a row fast

Explanation:

Answer:the attraction between positive metal ions and interlocking electrons

Explanation: because I got it right

Answer:

bacteria release acids and other agents that break down rock

Explanation:

One of the ways in which biological weathering results in chemical erosions is through bacteria releasing acids and other agents to break down a rock.

Weathering is defined as the physical disintegration and chemical decomposition of rocks to form sediments and soils.

The process of erosion removes the weathered materials from the earth surface.

Chemical weathering involves the decay of rocks by chemical means.

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:

Hydrogen bond exemplifies a weak chemical bond.

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

Learn more about electronegative atom here:

https://brainly.com/question/12676386

#SPJ4

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:

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.

If you need to learn more about anabolism reactions, click here

https://brainly.com/question/16793262?referrer=searchResults

#SPJ4

Answer:

Low luster, can conduct electricity

has a high luster and is very brittle

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:

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

Answer:

The H+ concentration would decrease by 10 fold. From .01 to .001

Explanation:

This is due to how a pH of 2 is expressed in scientific notation as 10^-2 power when referring to H+ concentration so a pH of 3 would be 10^-3. Hence it would be 10 times smaller in concentration as the power increases to the negative power the smaller the concentration becomes.

Moles of chromium (lll) oxide produced : 4 moles

The reaction equation is the chemical formula of reagents and product substances

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.

Reaction

4Cr+3O₂⇒2Cr₂O₃

moles of Cr=8 moles

From the equation, mol ratio Cr : Cr₂O₃ = 4 : 2, so mol Cr₂O₃ :

[tex]\tt \dfrac{2}{4}\times 8=4~moles[/tex]

Answer:

C

Explanation:

The answer is in the image.

--------------------------------------------------

Walk in faith and trust in God!

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.

To find more about buffer, refer the link:

https://brainly.com/question/22821585

#SPJ5

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.

To learn more about atom, refer to the below link:

https://brainly.com/question/13518322

# SPJ1

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

Know more about egg reaction

https://brainly.com/question/7867377

#SPJ1