HELP PLEASE WILL MARK BRAINLIEST!!!!!!!

That is actually physics because it talks about motion.

Answer: B

Explanation:

Explanation:

higher or lower energy, depending on the element

Answer:

B

Explanation:

The Energy of a photon in an atomic level, E =  hc /  λ

where

h=Planck's constant =6.626 × 10^{−34}Js

c=speed of light=3×10^8m/s

λ = photon's wavelength (metres),

E={6.626×10^{-34}Js × 3× 10^{8}m/s / {498}m/s

E= 3.99×10^{-28}J

Because all the energy levels of electrons in an atom are quantized,and cannot   exist on different values of energies between them. So, when  an electron moves from one energy level to another,  it would release or absorb a  specific and same amount of energy. Therefore, the  energy of all the atomic levels of silicon must be  E= 3.99×10^{-28}J

See similar answer in: https://brainly.in/question/45682947

​

Answer:

What is Acellus? Acellus is a learning accelerator. It uses video-based lessons with cutting-edge technology to accelerate learning, elevate standardized test scores, reduce dropout rates and transition more students into careers and college.

Answer:

Thallium is a Solid

Hope it helps

Mark me as Brainliest plz!

:DD

Answer:

Explanation:

The image ending 1318 is 2-chlorophenol. The image ending 1725 is 3-chlorophenol and the image ending 1917 is 4-chlorophenol

Answer:

h30

Explanation:

Answer:

true

Explanation:

earth haven't been around for 1 million years yet

Answer:

true

Explanation:

they wouldnt be alive to complete the process

Answer:

An alcohol that contains two hydroxyl groups

Answer:

D. The sun has less gravitational pull on Pluto because it is farther away.

Answer:

an oxygen atom with 8 electrons, 8 protons and 9 neutrons

An atom is called as neutral when the number of electron is equal to number of proton . Thus option C is correct.  

Atom is the smallest unit of an element which can not be seen in with your bare eyes, due to its wavelength.

A visible light wavelength  is about 0.000001 meter, where  the size of an atom is 0.000000001 which is much smaller than 0.000001.

An atom has a nucleus, means it is the mass of the atom.  

An atom is composed of protons, neutrons, and electrons where the protons and neutrons are combinedly form  nucleus and electrons are present surrounding the nucleus.

When the number of proton and electron of an atom will be same  then it is called as neutral only in normal state, but in other condition it either gain or loss electron by developing charge on it.

Neutral atoms are Oxygen, Hydrogen, Lithium, Helium etc.

Hence, option C is correct.  

Learn more about atom, here:

https://brainly.com/question/18859412

#SPJ5

Answer:

because diamond is the allotrope of carbon and diamond is the hardest substance in the world and it's melting point is very very high so it's difficult

the statements that are applicable are the ones that mention HCl being a limiting reactant, or the one that includes that the maximum amount of Cl gas that can be produced is 1.74g

Answer:

48

Explanation:

12 g/ml * 4 ml = 48

Answer:

A. 26 moles O2

B. 16 moles CO2

C. 20 moles H20

Explanation:

a. 4 moles C4H10 x [tex]\frac{13 moles O2}{2 moles C4H10}[/tex] = 26 moles O2

B. 4 moles C4H10 x [tex]\frac{8 moles CO2}{2 moles C4H10}[/tex] = 16 moles CO2

C. 4 moles C4H10 x [tex]\frac{10 moles H2O}{2 moles C4H10}[/tex] = 20 moles H20

Use the coefficients of the balanced equation to make the convertions

Answer:

By electroplating

Explanation:

The metal which requires to be protected from rust is connected to the anode while a lower metal in the series is connected to the cathode, the a complete circuit is made and current is passed through the circuit there by resulting to the coating of the metal at the anode.

Answer:

Heterogenous

Explanation: Because its not one uniform thing.

The term that best describes Max's bowl of cereal is a heterogeneous mixture.

A heterogeneous mixture is a chemical term that refers to those mixtures in which its components can be distinguished with the naked eye.

One of the distinctive characteristics of heterogeneous mixtures is that the substances that compose them retain their properties and can be separated by physical procedures such as:

According to the above, Max's bowl is an example of a heterogeneous mixture because milk and cereals can be distinguished with the naked eye and these can be separated using a physical procedure.

Learn more in: https://brainly.com/question/5924138

Explanation:

Since Z is EXPLICITLY determined by the number of protons, massive, positively charged particles, present in the element's nucleus, the proton must be the greatest determinant. Of course, it is the electrons that actually do the chemistry, but Z defines the element.

a. We have 210 pennies

b. We need 140 dimes to buy as much candy as possible.  

c. All these dimes should weigh 320.6 g.

d. We can buy 70 pieces of candy.

e. The total weight of the candies will be 2864.4 g

f. Using 3 pennies and 2 dimes as a pack to buy candies we can not buy more pieces of candy because we would need more pennies.    

a. To find the number of pennies we need to divide the total mass of pennies ([tex]m_{t_{p}}[/tex]) by the mass of each one of them ([tex]m_{p}[/tex]):

[tex] N = \frac{m_{t_{p}}}{m_{p}} = \frac{636.3 g}{3.03 g} = 210 [/tex]

Hence, we have 210 pennies.  

b. We can find the total number of pieces in multiples of four that we can buy with 210 pennies. To buy one piece we need to use 3 pennies and 2 dimes, so the number of total pieces is:

[tex] 3P = 210 [/tex]

Where P is for pennies

[tex] P = \frac{210}{3} = 70 [/tex]

Hence, we can buy a total of 70 pieces in multiples of four candies.

Now, from this total of 70 pieces, we can use the following number of dimes:

[tex] 2D = 70 [/tex]

Where D is for dimes      

[tex] D = \frac{70}{2} = 140 [/tex]

Therefore, we need 140 dimes to buy as much candy as possible.

c. The mass of the total amount of dimes ([tex] m_{t_{d}}[/tex]) is:

[tex] m_{t_{d}} = 140*2.29 g = 320.6 g [/tex]

Hence, all these dimes should weigh 320.6 g.

d. We know that we can buy a total of 70 pieces in multiples of four candies (calculated above).

Then, we can buy 70 pieces of candy.

e. Knowing that each piece is a multiple of 4 candies, the weight of the 70 pieces of candy ([tex]m_{c}[/tex]) is:

[tex] m_{c} = 70*4*10.23 g = 2864.4 g [/tex]      

f. Since we can buy pieces in multiple of four candies using 3 pennies and 2 dimes if we have now twice as many dimes, we can not buy more pieces of candy because we would need more pennies.      

To see another example go here:

I hope it helps you!                                              

acho q a letra c

obs: não tenho certeza

Evaporation.

Also, it is not set to be a certain letter as for abcd

Answer:

Explanation:

The number of cactus plants would increase.

Answer:

Gases are more difficult to measure than liquids, because measured volumes are highly affected by temperature and pressure. Gas meters measure a defined volume, regardless of the pressurized quantity or quality of the gas flowing through the meter.

Explanation:

It is difficult to measure the volume of agas because measured volumes are highly affected by temperature and pressure.

False is the correct answer.