Which ocean borders Africa on the western coast?
pls answer for 20 coiins

Answers

Answer 1

Answer:

indian ocean

Explanation:


Related Questions

Jocelyn and her friends put some raisins, hazelnuts,
almonds, and peanuts in a bowl to make a snack for their
hiking trip. What does this snack represent?
A. a solution
B. a new element
C. a new compound
D. a mixture
plspslsspslpsl help its revision for exam and i need it quick brainliest for the right answer :D​

Answers

Answer: a mixture

Explanation:

What is the first example in the periodic table where the Aufbau principle is not followed?
the 3s subshell is lower in energy than the 3d subshell
the 3s subshell is lower in energy than the 2p subshell
the 2s subshell is lower in energy than the 2p subshell
the 4s subshell is lower in energy than the 3d subshell

Answers

Answer:

the 4s subshell is lower in energy than the 3d subshell

Explanation:

In the element number 24 which is chromium

the electronic configuration should be according to Aufbau principle

will be  = [tex]1s^22s^22p^63s^23p^64s^23d^4[/tex]

but in reality it is = [tex]1s^22s^22p^63s^23p^64s^13d^5[/tex]

The 6 electrons in the outermost shell will be divided as 5 in 3d subshell and 1 in 4s shell, because half filled orbital [tex]4s^13d^5[/tex] will be more stable than [tex]4s^23d^4[/tex].

A student found the percent composition of CO to be 50% C and 50% O. What did the student do Incorrectly? What is the percent composition of CO?

Answers

The percent is wrong it should be 42.88% carbon and 57.12% oxygen
It should be 42 carbon and 57 oxygen

!PLEASE HELP ASAP!
How many grams of aluminum can be produced by decomposing 12.3 grams of aluminum
oxide?

Answers

102 grams per mole I think search it up on google

One of the light waves produced when hydrogen is energized has a wavelength of 4.105 x10^-7 m. What is the frequency of this light?​

Answers

Answer:

7.3 x 10¹⁴Hz

Explanation:

Given parameters:

Wavelength  = 4.105 x 10⁻⁷m

Unknown:

Frequency of the light  =?

Solution:

The frequency, wavelength and speed of a wave are related using the expression below;

           C = f λ

C is the speed of light = 3 x 10⁸

f is the frequency

λ is the wavelength

      3 x 10⁸ = f x 4.105 x 10⁻⁷

              f  = [tex]\frac{3 x 10^{8} }{4.105 x 10^{-7} }[/tex]   = 7.3 x 10¹⁴Hz

Answer:

7.3 x 10¹⁴Hz

Explanation:

Describe the structure of sodium metal?

Answers

Answer:

The body-centred cubic (bcc) structure is the most stable form for sodium metal at 298 K (25°C). Under normal conditions, all of the Group 1 (alakali metals) elements are based upon the bcc structure. The closest Na-Na separation is 372 pm implying a sodium metallic radius of 186 pm.

Explanation:

Use the periodic table to select which type of bond is present and which of the listed properties is most likely for each substance.

A =
B =
Cu3Zn2
O2

Answers

Answer:

A :metallic

B :conducts electricity as a solid

C :covalent

D :does not conduct electricity

Explanation:

Answer:

A = ✔ metallic

B = ✔ conducts electricity as a solid

C = ✔ covalent

D = ✔ does not conduct electricity

Explanation:

edge 2023

Can someone help me with this?

Answers

Answer:

b

Explanation:

it i b ur welcome

Answer: um sure so 2+4= 24 then 9+7=97

Explanation: bc if you have 2 and you have 4 and if you smash that together you get 24 and 9 and 4 smash that together and you get 94 see so easy

How do you think the atomic radii will change as electrons are added to a shell?

Answers

Answer:

As electrons are added to the valence shell, an extra proton (i.e fundamental, positively charged nuclear particle) is added to the element's nucleus. As electrons add and Z the atomic number increases 1 by 1, nuclear charge WINS, and electronic radii contract.

Explanation:

Hope this helps you

Crown me as brainliest:)

As electrons are added to the valence shell, an extra proton (i.e fundamental, positively charged nuclear particle) is added to the element's nucleus. As electrons add and Z the atomic number increases 1 by 1, nuclear charge WINS, and electronic radii contract.

Which type of energy produces almost no waste or pollution?

A: burning coal

B: nuclear energy

C: solar energy

Answers

Answer:

B: nuclear energy.

Explanation:

It is emission-free and it saves 2.4 billion tons of carbon emissions per year. Also, the level of hazard of nuclear waste does decrease during the time.

Hope that helps!

What pressure (in atm) does 3.54 moles of chlorine gas at 376 K exert on the walls of its 51.2 L container?

Answers

The answer to your question is P = 2.13 atm

Answer:

2.13 atm

Explanation:

WILL GIVE BRAINLIEST

Answers

Answer:

Explanation:

NaClO3

Atomic masses:

Na =23

Cl=35.5

O=16

Molar mass=(23)+(35.5)+(3×16) =106.5g/mol

All elements are unstable except the noble gases

True or False

Answers

Many elements only exist in an unstable or radioactive form. All non-natural or man-made elements are radioactive isotopes. Heavier isotopes tend to react more slowly than lighter isotopes of the same element. There are 254 known stable isotopes and 80 elements which have at least one stable isotope.

Answer:

True

Explanation:

Noble gases already have the maximum number of valence electrons they can hold so they are the only stable group

Magnesium will...

• Gain 2 electrons and become Mg2-

• Lose 2 electrons and become Mg2-

• Gain 2 electrons and become Mg2+

• Lose 2 electrons and become Mg2+

Answers

Answer:

D

Explanation:

magnesium always lose 2 electrons

Of the three states of water(ice,liquid, and water vapor), in which state are the intermolecular forces the strongest? In which state are they the weakest

Answers

The intermolecular forces are strongest when it’s solid because their molecules are close to each other. The state in which the intermolecular forces are the weakest is when its water vapor because the molecules are more free and it’s gas like

Hello can someone help me out i will give brainliest.. chemical or physical change hwwwww

Answers

Answer:

11. physical

19. chemical

10. chemical

12. physical

18. chemical

Explanation:

that should be right, I'm not exactly sure though

How to balance Kmno4 + H2 So4+ CH3CH2OH-> K2So4+ mnso4 + CH3COOH + H2o by oxidation number method ​

Answers

Answer:

Ethanol + Potassium Permanganate + Sulfuric Acid = Acetic Acid + Manganese(II) Sulfate + Water + Potassium Sulfate

Explanation:

what is the molar mass of ammonium sulfite

Answers

Answer: 116.15 g/mol

According to Newton's third law, the two forces in a force pair act
A. on the same object.
B. with the same force.
C. in the same direction.

Answers

B. With the same force

The mass and volume of each sample differ from the mass and volume of the other samples. Is it possible for each sample to contain 1 mol of each substance?
No, because they have different masses.
No, because they have different volumes.
Yes, if each sample contains 6.02 x 1023 atoms.
Yes, if each sample contains 2 amu.

Answers

Answer:

c: Yes, if each sample contains 6.02 x 1023 atoms.

Explanation:

got it right on the test <3

Yes, if each sample contains 6.022×10²³ atoms. Therefore, the correct option is option C among all the given options.

What is mole?

In chemistry, a mole, usually spelt mol, is a common scientific measurement unit for significant amounts of very small objects like atoms, molecules, and other predetermined particles. Every material has the same amount of atoms and other particles inside of a mole. The mole has the following relationship to an element's mass: One moles of carbon twelve atoms weighs 12 grammes and has  6.022×10²³ atoms.

In contrast, a mole of oxygen weighs 15.999 grammes despite having the same amount of atoms as a mole of carbon-12 by definition. As a result, oxygen is heavier than carbon. The same logic can be used to determine the weights of molecules or formulas. Yes, if each sample contains  6.022×10²³  atoms.

Therefore, the correct option is option C.

To know more about mole, here:

https://brainly.com/question/15209553

#SPJ7

In addition to Earth, which planet has evidence of water on the surface?
(one Answer)Thank you
Mars
Mercury
Neptune
Saturn

Answers

Answer:

mars

Explanation:

just googled it

In addition to Earth, mars  planet has evidence of water on the surface.

What are evidence of water?

Evidence proves that financing results  works Our strong evidence based on the  proves that more lives and real can be changed through access to affordable inventing  for water and sanitation.

Evidence of finding water on Mars first to be known  in 2000, with the appearance of gullies that suggested us about  a liquid origin. Their formation has been hotly in  debated over the ensuing years.

Therefore, addition to Earth, mars  planet has evidence of water on the surface.

Learn more about  evidence of water, here:

https://brainly.com/question/3406927

#SPJ6

Enter 4 digit code( need help!!)

Answers

Answer:

9146

Explanation:

Answer:

9146

Explanation:

9146

HCOOH + MnO, CO, + Mn2+ (in acidic solution) *

Answers

Step 1: Separate the whole reaction into two half-reactions

HCOOH → CO2 MnO4- → Mn2+

Step 2: Balance the non-hydrogen and non-oxygen elements first

HCOOH → CO2 MnO4- → Mn2+

(C is balanced) (Mn is balanced)

Step 3: Balance oxygen by adding H2O(l) to the side that needs oxygen (1 O : 1 H2O)

HCOOH → CO2 MnO4- → Mn2+ + 4H2O

Step 4: Balance hydrogen by adding H+ to the side that needs hydrogen (1 H: 1 H+)

HCOOH → CO2 + 2H+ 8H+ + MnO4- → Mn2+ + 4H2O

Step 5: Balance the charges: add electrons to the more positive side (or less negative side)

HCOOH → CO2 + 2H+ 8H+ + MnO4- → Mn2+ + 4H2O

Reactants Products Reactants Products

HCOOH = 0 2H+ = +2 8H+ =+8 Mn2+ =+2

__MnO4- = -1________________________

Overall = 0 +2 +7 overall = +2

+2e- +5e-

0 +2

Step 6: Balance electrons on the two half-reactions

5[HCOOH → CO2 + 2H+ +2e-]

2[5e- + 8H+ + MnO4- → Mn2+ + 4H2O]

5HCOOH → 5CO2 + 10H+ + 10e-

10e- + 16H+ + 2MnO4- → 2Mn2+ + 8H2O

Step 7: Get the overall reaction by adding the two reaction.

5HCOOH → 5CO2 + 10H+ + 10e-

10e- + 16H+ + 2MnO4- → 2Mn2+ + 8H2O

5HCOOH + 6H+ + 2MnO4- → 2Mn2+ + 8H2O + 5CO2

Balanced Redox Reaction:

5HCOOH + 6H+ + 2MnO4- → 2Mn2+ + 8H2O + 5CO2

If a(n) ___
ended question is too challenging, respondents will abandon the survey

Answers

Answer:

Open ended question

Explanation:

Built different :]

Answer:

if an OPEN end question is too challenging respondents will abandon the surevy

Explanation:

name them pls i don't know this ​

Answers

Answer:

Explanation:

1. Sodium

2. Ammonium Carbonate

3. Potassium phosphate

4. Calcium sulphate

5. Zinc nitrate

6. Iron(III) oxide-hydroxide

7. Aluminium phosphate

8.Cobalt(III) Carbonate

9. Iron(II) sulfate

10. Magnesium chloride

11. Nitric acid

Answer:

1. Sodium

2. Ammonium Carbonate

3. Potassium phosphate

4. Calcium sulphate

5. Zinc nitrate

6. Iron(III) oxide-hydroxide

7. Aluminium phosphate

8.Cobalt(III) Carbonate

9. Iron(II) sulfate

10. Magnesium chloride

11. Nitric acid

Explanation:

calculate the wavelength of a photon of green light that has a frequency (v) of 5.76x10^14 s^-1

Answers

Answer:

λ =  521nm

Explanation:

To convert wavelength to frequency we need to use the equation:

ν = c / λ

Where ν is frequency: 5.76x10¹⁴s⁻¹;

c is speed of light: 3x10⁸ms⁻¹;

And λ is wavelength in m:

Wavelength is:

λ = c / ν

λ = 3x10⁸ms⁻¹ / 5.76x10¹⁴s⁻¹

λ = 5.21x10⁻⁷m

= 521nm

The wavelength of a photon of green light that has a frequency (v) of 5.76x10¹⁴ s-¹ is 5.21 × 10-⁷m

HOW TO CALCULATE WAVELENGTH:

The wavelength of a photon can be calculated by using the formula below:

λ = v/f

Where;

λ = wavelength of the photon (m)v = velocity (3 × 10⁸ m/s)v = frequency of photon (s-¹)

According to this question, the frequency (v) of a greenlight is 5.76x10¹⁴ s-¹, the wavelength can be calculated as follows:

λ = 3 × 10⁸ ÷ 5.76 x 10¹⁴

λ = 3/5.76 × 10⁸-¹⁴

λ = 0.521 × 10-⁶

λ = 5.21 × 10-⁷m

Therefore, the wavelength of a photon of green light that has a frequency (v) of 5.76x10¹⁴ s-¹ is 5.21 × 10-⁷m.

Learn more at: https://brainly.com/question/19601903?referrer=searchResults

What energy transformation occurs in solar panels found on a roof?

Answers

Explanation:

Solar panels are visible on roof tops on homes and businesses. Solar thermal technology transforms solar energy to heat, which is then used to heat homes, businesses and even swimming pools, or transformed again into electricity.

Answer:

Solar panels are visible on roof tops on homes and businesses. Solar thermal technology transforms solar energy to heat, which is then used to heat homes, businesses and even swimming pools, or transformed again into electricity.

What is the density of an object with a mass of 140 g and a volume
of 6 ml

Answers

Answer:

23.33 g/mL

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\ [/tex]

From the question we have

[tex]density = \frac{140}{6} = \frac{70}{3} \\ = 23.3333...[/tex]

We have the final answer as

23.33 g/mL

Hope this helps you

Which element is in the same family as Chlorine (Cl) and Fluorine (F)?

Hydrogen (H)

Lithium (Li)

Oxygen (O)

Bromine (Br)

Answers

Answer/Explanation:

Chlorine and Fluorine are in the Halogen family. The elements in the Halogen family are:

Fluorine (F)

Chlorine (Cl)

Bromine (Br)

Iodine (I)

Astatine (At)

Tennessine (Ts)

Hydrogen (H) is a nonmetal

Oxygen (O) is a nonmetal

Lithium (Li) is an alkaline metal.

Answer/Explanation:

Chlorine and Fluorine are in the Halogen family. The elements in the Halogen family are:

Fluorine (F)

Chlorine (Cl)

Bromine (Br)

Iodine (I)

Astatine (At)

Tennessine (Ts)

Hydrogen (H) is a nonmetal

Oxygen (O) is a nonmetal

Lithium (Li) is an alkaline metal.

which element below has the highest electronegativity? beryllium, carbon, fluorine, nitrogen

Answers

Answer: fluprine

Hope this help

Other Questions
0=x^2+4x+1. Khan academy Read the text below carefully and then answer the following question.Pensez-vous au futur ? Pensez-vous quil va tre extraordinaire et sans problme ?Par exemple, quelle profession pensez-vous ? Voulez-vous tre chirurgien et oprer les patients ? Dsirez-vous tre pilote, photographe, maire de votre ville ? Vendeur de lgumes ? Homme daffaires ou traducteur ?Que pensez-vous de ces professions ? Pensez-vous que penser au futur est important ?Ou vous pensez prendre le temps pour penser au futur ?One of the sentences asks you:Do you think about taking your time to think about future?What do you think about future?What do you think about professions? what is the function of semi vesicles Divide. Reduce the answer to lowest terms.3/4 1/3 Simplify each algebraic expression by combing like terms 7x^2-5x+10x-8x^2 - Quieres comer algo?- No, gracias, no quiero comer ___.A. nuncaB. algoC. nadieD. nada what number is 33 1/3 of 66ok so ik that the answer is 22 I think but I wanted to know how to set the answer up. 8. Which of the following events led to the dismantlement of the Articles of Confederation? O Mayflower Compact O Stamp Act O Shay's Rebellion O Second Continental Congress Solve: 2x - 3 = 4x + 5 Drag the tiles to the correct boxes to complete the pairs. Match each population trend to a contributing factor. government-sponsored family control programs agricultural economies medical advancements Industrial Revolution high birthrate arrowRight low death rate arrowRight increase in food supply arrowRight low birthrate arrowRight Reset Next how this landslide resulted from the interactions of the four spheres of earth please help im stuck i dont get it Describe the role of rajendra laxmi in the unification of nepal. What is the slope of the line thatpasses through these two points?(-3, 2)(4, 2)Remember, Sloperise (y2-y)run (x2-x1)Simplify your answer completely. 1. Why has social media made a significant impact on influencing government decisions on controversial issues? Explanation: What do you think are the potential positives and negatives to partisanship? Catherine purchased dried herbs from the grocery store. Which structure would she use if wanted to create a mixture of powdered herbs by pounding them repeatedly using a mortar and pestle?A. looping structureB. selection structureC. sequence structureD. conditional structure If 5, 8 are two adjacent terms in an arithmetic sequence (in that order), then the next term is What is the effect of the write-off of uncollectible accounts (using the Allowance Method) on: a. Net Income b. Net Accounts Receivable PLEASE ANSWER ASAP ITS DUE!!an atom has the radius 310^-11 meters. One of the particles that makes up an atom has a radius of 1 10^-15 meters. About how much larger is the atom than this particle?