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Refraction is a phenomenon in which, light bends itself while moving from from one Medium to another. This occurs due to change in speed of light in different mediums.

Therefore correct option is :

A. it changes its direction as it passes into a new medium.

I hope it helped you !!

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The Correct option will be : -

A. it changes its direction as it passes into a new medium.

because, light travels with different speeds in different mediums, and this occurs due to difference in optical density of different mediums.

And bending of light depends upon the change in medium,

for example :

_____________________________

[tex]\mathrm{ ☠ \: TeeNForeveR \: ☠}[/tex]

Answer: D.Solar power produces no carbon dioxide

Explanation:

Solar power produces no carbon dioxide. The solar panel's carbon footprint is roughly 20 times less than the carbon output of coal-powered electricity sources. Hence, option D is correct.

A solar power plant uses sunlight to get energy. As the sunlight is ample and renewable, one can use it to power up the home and business premises.

Biomass energy is an energy source that comes from plant materials such as wood, corn, sugarcane, and grasses, etc.

However, it needs less capital investment than setting up a solar power plant.

Solar Energy: The major advantage of solar is that the source of energy (sun) is free.

Hence, option D is correct.

Learn more about the solar power plant here:

https://brainly.com/question/23810774

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Answer:

acidic in the order. HBr and HI can't be prepared like H

They ic in the order . HBr & HI can,t be prepared like HCl by using Concentrated

Answer:

acidic in the order. HBr and HI can't be prepared like H

They ic in the order . HBr & HI can,t be prepared like HCl by using Concentrated

Answer:

Explanation:

Given that:

The mass of sodium crystal = 4.14 g

As a result, the number of atoms in the sodium crystal is:

[tex]=4.14 \g \times \dfrac{ 1 \ mol}{23.0 \ g }\times \dfrac{6.023 \times 10^{23} \ atoms}{1 \ mol}[/tex]

= 1.084 × 10²³ atoms

In the valence orbital of the sodium atom, there is just one electron.

As a result, the number of molecular orbitals produced by these atoms is= 1.084 × 10²³ molecular orbital

Because valence bands are created from occupied molecular orbitals, the number of valence bands created from the aforementioned molecular orbitals is:

[tex]= \dfrac{ 1.084 \times 10^{23}}{2}[/tex]

= 5.420 × 10²² orbitals.

Answer:

5.56g of FeCl2 can be produced

Explanation:

To solve this question we must find the moles of each reactant. With the moles and the chemical equation we can find limiting reactant. With limiting reactant we can find the moles of FeCl2 and its mass as follows:

Moles HCl:

1.5L * (0.25mol / L) = 0.375 moles HCl

Moles Fe -Molar mass: 55.845g/mol-

2.45g * (1mol / 55.845g) = 0.0439 moles Fe

For a complete reaction of 0.375 moles HCl are needed:

0.375 moles HCl * (1mol Fe / 2mol HCl) = 0.1875 moles Fe

As there are just 0.0439 moles Fe, Fe is limiting reactant

1mol of Fe produce 1 mole of FeCl2, 0.0439 moles Fe produce 0.0439 moles of FeCl2. The mass is:

Mass FeCl2 -Molar mass: 126.751g/mol:

0.0439 moles Fe * (126.751g / mol) =

Answer:

1.53 atm

Explanation:

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

Volume = constant

Initial pressure (P₁) = stp = 1 atm

Initial temperature (T₁) = 273 K

Final temperature (T₂) = 144 °C = 144 °C + 273 = 417 K

Final pressure (P₂) =?

Since the volume is constant, the final pressure can be obtained as follow:

P₁ / T₁ = P₂ / T₂

1 / 273 = P₂ / 417

Cross multiply

273 × P₂ = 417

Divide both side by 273

P₂ = 417 / 273

P₂ = 1.53 atm

Therefore, the final pressure (i.e the pressure inside the hot water bottle) is 1.53 atm.

Answer:

2Mg(s) + O2(g) ----->2MgO(s)

Explanation:

In writing a balanced chemical reaction equation, the rule of thumb is that the number of atoms of each element on the reactant side must be the same as the number of atoms of the same elements on the products side.

Hence for the reaction of magnesium and oxygen shown below;

2Mg(s) + O2(g) ----->2MgO(s)

We notice that there are two atoms each of magnesium and oxygen on both sides of the reaction equation hence the equation is balanced.

Answer:

Respiration

Explanation:

Energy, steam and carbondioxide formed.

Answer:

17188 years

Explanation:

Recall the formula;

0.693/t1/2 = 2.303/t log(No/N)

t1/2 = half life of 14C

No = initial activity of 14C

N = activity of 14C at time t

t = age of the sample

Substituting values

0.693/5730= 2.303/t log(160/ 20)

1.21 * 10^-4= 2.0798/t

t = 2.0798/1.21 * 10^-4

t = 17188 years

Answer: A more electronegative atom will have more attraction to the electrons in a chemical bond.

Explanation:

An atom that is able to attract electrons or shared pair of electrons more towards itself is called an electronegative atom.

For example, fluorine is the most electronegative atom.

Due to its high electronegativity it is able to attract an electropositive atom like H towards itself. As a result, both fluorine and hydrogen will acquire stability by sharing of electrons.

Thus, we can conclude that a more electronegative atom will have more attraction to the electrons in a chemical bond.

Answer:

saltation

Explanation:

Answer:

Boiling - The process of a liquid changing to gas.

Boiling point - The temperature at which a liquid boils.

Condensing - The process of a gas changing to a liquid.

Distillate - The liquid collect from the condenser.

Residue - The liquid left behind in the distillation flask.

Vapour - Another name for gas.

Hope it helps :)

Answer:

O2

Explanation:

for find the limiting reactant you must calculate the moles of the reactants from the amount that you have and from the MM:

MM FeS2 = 120n  = 26.2g / 120g/mol = 0,218 mol

MM O2  = 32n = 5,44g/32g/mol = 0,17 mol

The limiting reactant is  

O2

Answer:

they have the same molar solubility at 44.5 degrees celsius

Answer:

We have to find out which of the reactants that is the Limiting Reagent.

The Limiting Reagent is the reactant that finishes before reaction is complete or simply put... Its the reactant that's NOT IN EXCESS.

We use the reactant that's not in excess to find the Number of moles of product because once that reactant is used up.... The reaction also ends or stops(hence the name;Limiting reactant).

Now

We have 10moles of NO

We also have 6moles of O2

The balanced equation of Reaction is

2NO + O2 ===> 2NO2

Now

looking at this equation

2moles of NO is required to react with 1mole of O2

So since we have NO=10moles and O2 = 6moles

It means that

20moles of NO is required to react with 6 moles of O2.

We were only given 10moles of NO and this is not even enough to react with the whole 6moles of Oxygen because from what we just discovered... We need 20moles of NO to react with all 6moles of O2.

So

This means that NO is the LIMITING REACTANT. It is in short supply and would be used up before the whole reaction takes place.

So we use the limiting reactant to find the Number of Moles of Product formed.

Now

From the eqn of reaction

2moles of NO forms 2Moles of NO2.

Their Mole ratio is 2:2 or 1:1...

This simply means that an equal amount of NO2 will be Produced

MEANING.... 10 MOLES OF NO2 IS PRODUCED.

HAVE A GREAT DAY!!!

Answer:

10.65 moles

Explanation:

O2:H2O

8:6

14.2:x

x= 10.65 moles

Answer:

Increasing its mass to twice its original value

Explanation:

Pls mark me brainliest

Answer:

170.43g P2O3

Explanation:

First write and balance the equation:

P2O3 + 4NaOH → 2Na2HPO3 + H2O

NaOH=39.997 g/mol  P2O3= 109.945 g/mol

248g NaOH x 1 mol NaOH/39.997g NaOH x 1 mol P2O3/4 mol NaOH x

109.945g P2O3/ 1 mol P2O3 = 170.43g P2O3

Answer:

76.0 g

Explanation:

Step 1: Write the balanced equation

2 HCl + Ca(OH)₂ ⇒ CaCl₂ + 2 H₂O

Step 2: Calculate the moles corresponding to 50.0 g of HCl

The molar mass of HCl is 36.46 g/mol.

50.0 g × 1 mol/36.46 g = 1.37 mol

Step 3: Calculate the number of moles of CaCl₂ produced from 1.37 moles of HCl

The molar ratio of HCl to CaCl₂ is 2:1. The moles of CaCl₂ produced are 1/2 × 1.37 mol = 0.685 mol.

Step 4: Calculate the mass corresponding to 0.685 moles of CaCl₂

The molar mass of CaCl₂ is 110.98 g/mol.

0.685 mol × 110.98 g/mol = 76.0 g

Answer:

try to see THE PIXELS, AVENGERS, JOKER, CHARLIE'S ANGEL, JUSTICE LEAGUE,IT ,THE NUN ETC

Answer:

watch movie COCO and croods a new age

Answer:

8.437282129392383

Explanation:

We assume you are converting between grams Water and mole.

You can view more details on each measurement unit:

molecular weight of Water or mol

The molecular formula for Water is H2O.

The SI base unit for amount of substance is the mole.

1 grams Water is equal to 0.055508435061792 mole.

Note that rounding errors may occur, so always check the results.

Answer:

8.44moles

Explanation:

8.44moles

Answer:

6 moles

Explanation:

because if conducting a moles ratio for oxygen and water it is 1:2 so the moles would calculate up to 6 moles after cross multiplication.

Answer:

The minimum mass of ethylene glycol = 6.641 Kg

Explanation:

[tex]\Delta T_f= T_f-T_f'\\T_f'=T_f-\Delta T_f[/tex]

Where T_f = freezing point of pure solvent water, 0°C

T_f'= Freezing point of solvent after mixture

K_f = Freezing point depression constant = 1.86 °C/m

Moecular weight of ethylene glycol = 60 g/mol

Weight of ethylene glycol = 14.5 Kg= 14.5×10^3 g

molality of ethylene glycol

[tex]m = \frac{weight}{mol.wt} \times\frac{1000}{V}[/tex]

Substitute the values to calculate m

[tex]m = \frac{w}{60} \times\frac{1000}{14.5\times1000}[/tex]

by formula

[tex]0-(-14.2) =1.86\frac{w}{60} \times\frac{1000}{14.5\times1000}[/tex]

calculating we get w = 6641.93 g

Therefore, The minimum mass of ethylene glycol = 6.641 Kg

Answer:

parents / genetics

Explanation:

a genetic disorder most likely comes from a family relative weather it being mom,dad, grandpa, uncle,ect.

Answer:

Subject of the experiment and out of scope

Explanation:

In any research study, the process of thing studied is basically the subject of the experiment on which research is conducted to determine the outcomes. If any thing lies out of the experimental process reach, then it is said to be out of scope of the experiment.

Answer:

11 grams of atoms are in 0.35 moles of oxygen.

Answer: water

For many centuries, it was considered that there were only three states of matter: solid, liquid and gas (the three that are present and stable in our world). And water is the substance that best represents them, because it is the only one that exists naturally in the three states.

Explanation: Matter can exist in one of three main states: solid, liquid, or gas.

Solid matter is composed of tightly packed particles. ...

Liquid matter is made of more loosely packed particles. ...

Gaseous matter is composed of particles packed so loosely that it has neither a defined shape nor a defined volume.

Answer:

Water is the only common substance that is naturally found as a solid, liquid or gas. Solids, liquids and gases are known as states of matter.

Feel free to mark it as brainliest :D

Ignore this part unless you want to understand out of your syllabus:

However, if you take into account the fifth state of matter, Bose-Einstein Condensate, which has been recently discovered, there is no substance as such.

Answer:

The correct answer is "142 g".

Explanation:

According to the question,

⇒ [tex]Cu^2+(aq)+2e^ ------> Cu(s)[/tex]

where,

Z = 2

F = 96500c

C = 30 A

t = 4h

 = [tex]4\times 60\times 60[/tex]

 = [tex]14400 \ sec[/tex]

We know that,

Atomic mass of Cu(M) = 63.5 g/mole

Now,

⇒ [tex]W=\frac{Mct}{ZF}[/tex]

On putting the values, we get

        [tex]=\frac{63.5\times 30\times 14400}{2\times 96500}[/tex]

        [tex]=\frac{27432000}{193000}[/tex]

        [tex]=142 \ g[/tex]