Which element below is least reactive? Which element below must be stored in oil because of its reactivity?

Answers

Answer 1

Answer: helium. sodium

Answer 2

The ability of an atom or element to undergo chemical changes is referred to as reactivity. Sodium is a highly reactive element that is stored in kerosene oil. And the one that is least reactive is helium. As a result, the correct options are A and C respectively.

What is reactivity?

The ability of an element to form a new substance through chemical reactions is referred to as reactivity.

They have the ability to easily displace another element from reactions. Alkali metals in Group I are highly reactive elements that should be kept away from water and air.

Sodium is an alkali metal that must be stored in kerosene oil because it is highly reactive with oxygen and water, releasing large amounts of heat in an exothermic reaction.

Kerosene, on the other hand, is a hydrocarbon that does not react with a sodium atom.

Also, as the helium is a noble gas, so is least reactive when it comes to reactivity.

Thus, the correct options are A and C respectively.

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Your question seems incomplete, the missing options are:

For question 1:

helium oxygen fluorine nitrogen

For question 2:

A: FlorineB: ChlorineC: SodiumD: Gold

Related Questions

Read the graph. A graph titled Renewable Energy Consumption by Source from 1949 to 2011 shows years on the x-axis, from 1950 to 2011, and Quadrillion B t u on the y-axis, from 0 to 4. The graph shows the usage for hydroelectric power, wood, biofuels, wind, and other. Hydroelectric power has the highest usage, and wind has the lowest usage. Which power source has been least consumed? wood wind biofuel hydroelectric.

Answers

The power source that is least consumed will have the lowest rise in the graph.

What is renewable energy?

The term renewable energy refers to those energy sources that can be replenished and reused such as wind, water solar etc. They are opposed to the nonrenewable energy sources which can not be reused such as fossil fuels.

Since the graph is not shown in the question, it is impossible to give a specific answer. However, the power source that is least consumed will have the lowest rise in the graph.

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Answer:Wind

Explanation: Its the only renewable resource....mark as brainliest

What does "Uruguay es la vaca y el puerto" mean? "Uruguay is the fish and the scales" "Uruguay is the fish and the port" "Uruguay's ports are the best" "Uruguay is the cow and the port".

Answers

Answer: Uruguay is the cow and the port.

:)

Answer:

Uruguay is the cow and the port.

Explanation:

got a 100

How many atoms are found in 5. 20 g of magnesium.

Answers

Answer:

1.29x10^22 atoms of magnesium

Explanation:

since the mass of magnesium is 5.20g and the molar mass is 24g/more and we know that 1mol of an element is equal to 6.022x10^22 atoms so we can start by finding the number of moLes of magnesium

5.20g/1 ×1mol/24.31×6.022×10^22 atoms/1mol

=1.29×10^22 atoms of magnesium

What methods did douglass take to learn how to read and write. Choose the three correct answers:.

Answers

Answer:

Mrs. Auld began to teach him.  

He learned to read and write by copying letters he saw in the shipyard.  

He would ask poor white boys to help and give them bread as payment.

Explanation:

The material in coaching clips will be included in the.

Answers

Answer:

final exam and lesson quizzes!

Explanation:

The material for coaching is based on the ability of the student to grasp the written information and make use of the available information in a short amount of time this helps increase the memory and retain power.

The clips show us how to prepare before the final exam and guide us by Q and A sessions. Hence will be included in the final exam and the lesson quizzes.

Learn more about the coaching clips that will be included in the.

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Work out the percentage change to 2 decimal places when a price of £97 is increased to £99.99.

Answers

Answer:

2.99

Explanation:

99.99-97 this is the reason

How did countries throughout the world view the United States after the Spanish-American War? as a power only in the Americas as a trading nation with little military strength as a weak nation that needed to strengthen its navy as a major power with worldwide military strength.

Answers

Answer:

D.

Explanation:

Edge 2022.

Following the Spanish-American War, other countries generally regarded the United States as a major power with global military strength.

What is Spanish-American War?

The Spanish-American War was a conflict between Spain and the United States.

Hostilities erupted in the aftermath of the internal explosion of the USS Maine in Havana Harbor, Cuba, prompting the US to intervene in the Cuban War of Independence.

The war demonstrated the United States' military capabilities, particularly in its victory over Spain, and established the country as a dominant force in the Western Hemisphere.

Thus, the Spanish-American War and its aftermath marked a watershed moment in the United States' international relations, as it began to assert itself as a major player in international affairs.

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Samantha has been working for a law firm and earning an annual salary of $80,000. She decides to open her own practice. Her annual expenses will include $15,000 for office rent, $3,000 for equipment rental, $1,000 for supplies, $1,200 for utilities, and a $35,000 salary for a secretary/bookkeeper. Samantha will cover her start-up expenses by cashing in a $20,000 certificate of deposit on which she was earning annual interest of $500.

Answers

This is my theory of the answer (the bottom says 105,200) By the way

When a solid is placed in a container and heat is applied, a phase change occurs. Watch the video and identify which of the following statements are correct.

Answers

Answer:

Explanation:When a solid is placed in a container and heat is applied, a phase change occurs. .The average kinetic energy of the system changes while all of a solid is converted to a liquid. *When a solid is converted to a liquid, heat is absorbed. The temperature increases while all of a liquid is converted to a gas

Where is each waterway located? match each item in column a to the answer in column b.

Answers

How are supposed to answer this question if you don't provide the items from both columns???

The tables represent some points on the graphs of lines m and n. Which system of equations is represented by lines m and n? A) 6x − y = 8 3x 2y = 9 B) 6x y = −8 3x − 2y = 9 C) −6x − y = 8 −3x 2y = 9 D) 6x − y = −8 −3x − 2y = 9.

Answers

A system of equation is a collection of equations

The system of equation is: [tex]\mathbf{6x -y = 8}[/tex] and [tex]\mathbf{3x + 2y = 3 }[/tex]

The points are given as:

[tex]\mathbf{Line\ m = (0,-8)(1,-2)}[/tex]

[tex]\mathbf{Line\ n = (1,3)(3,0)}[/tex]

For line m

Calculate the slope

[tex]\mathbf{m = \frac{y_2 - y_1}{x_2 - x_1}}[/tex]

So, we have:

[tex]\mathbf{m = \frac{-2 + 8}{1 - 0}}[/tex]

[tex]\mathbf{m = \frac{6}{1}}[/tex]

[tex]\mathbf{m = 6}[/tex]

The equation is then calculated as:

[tex]\mathbf{y = m(x - x_1) + y_1}[/tex]

This gives

[tex]\mathbf{y = 6(x - 0) -8}[/tex]

[tex]\mathbf{y = 6x -8}[/tex]

Rewrite as:

[tex]\mathbf{6x -y = 8}[/tex]

For line n

Calculate the slope

[tex]\mathbf{m = \frac{y_2 - y_1}{x_2 - x_1}}[/tex]

So, we have:

[tex]\mathbf{m = \frac{0 - 3}{3 - 1}}[/tex]

[tex]\mathbf{m =- \frac{3}{2}}[/tex]

The equation is then calculated as:

[tex]\mathbf{y = m(x - x_1) + y_1}[/tex]

This gives

[tex]\mathbf{y =- \frac{3}{2}(x -0) + 3 }[/tex]

[tex]\mathbf{y =- \frac{3}{2}x + 3 }[/tex]

Multiply through by 2

[tex]\mathbf{2y =- 3x + 3 }[/tex]

Rewrite as:

[tex]\mathbf{3x + 2y = 3 }[/tex]

Hence, the system of equation is:

[tex]\mathbf{6x -y = 8}[/tex] and [tex]\mathbf{3x + 2y = 3 }[/tex]

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Which of the following is true about mechanical waves? Question 1 options: Matter moves Does not move energy Moves energy Does not require a medium.

Answers

Answer: Move energy

Explanation:

Moves energy..........................

A trial-and-error method of problem solving used when an algorithmic or mathematical approach is called.

Answers

A trial-and-error method of problem solving used when an algorithmic or mathematical approach is called: heuristics.

An algorithm can be defined as a standard formula (procedures) which comprises a set of finite steps or instructions, that is typically used for solving a problem on a computer.

The three (3) basic building blocks (constructs) used in an algorithm are:

Iteration.Sequence.Selection.

Heuristics can be defined as a trial-and-error method used in solving a problem when an algorithmic or mathematical approach is not feasible or practical.

Hence, it typically involves the use of a functional methodology that is not completely structured as an algorithmic or mathematical approach, when solving a problem.

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Solve the equation. –9x 1 = –x 17 x = –8 x = –2 x = 2 x = 8.

Answers

Hello

the answer is

x = -2

Have a good day!

Answer:-2

Explanation:

Which statement describes a chemical property of iron?.

Answers

Answer:

A chemical property of iron is that it is capable of combining with oxygen to form iron oxide, the chemical name of rust. The more general term for rusting and other similar processes is corrosion. Other terms that are commonly used in descriptions of chemical changes are burn, rot, explode, decompose, and ferment.

HOPE IT HELPS YOU, BE SAFE AND TELL ME IF IM WRONG PLS! :) :D

Which part of a calcium atom in the ground state is represented by the dots in its lewis dot diagram.

Answers

Answer:On the left side of calcium atom.

Explanation:

There are two dots are present on the left side of calcium atom which represents the unpaired electrons present in the outermost shell. This structure is presented by Lewis in order to show the number of unpaired electrons in the atom. if the calcium atom loses these two electron during a chemical reaction so the two dots disappear and the calcium atom is now stable.

Hey looks pico design tho

Answers

6/10 for effort, but it looks ok

Answer:

go pico yeah yeah go pico yeah,

Explanation:

The main source of energy for producers in an ecosystem is.

Answers

Answer:

Sun

Explanation:

A producer is something we know as plants, algae, etc. As you know, these 'producers' get energy from the sun through photosynthesis. Then when an animal eats the plant, it is given about 10% of the energy stored from that producer.

Best of Luck!

How does President Obama try to inspire his audience? Check the three boxes that apply. By repeating "we will" by including impressive, technical language by using engaging, specific language by creating brief, powerful images.

Answers

Answer:

A. C. D.

Explanation:

just did it

Answer:

a c d

Explanation:

Which of the following was a popular art form during the 15th century? a. Murals b. Frescos c. Sculptures d. All of the above Please select the best answer from the choices provided A B C D.

Answers

Answer:

D. All of the above

Explanation:

If you were to look at the art forms of the 15th century, we see quite a bit of all three style(murals, frescos, and sculptures), this was the renissance period after all. Hope this helps!

What is the fully factored form of 32a3 + 12a2? 4a2(8a + 3) 4a(8a2 + 3a) 12a2(3a + 1) 12a(3a2 + a).

Answers

Answer:

4a²(8a + 3)

Explanation:

32a³+12a²

The greatest common factor of 32 and 12 is 4.

The greatest common factor of a³ and a² is a².

Factoring out 4a², you are left with (8a + 3)

Therefore, the fully factored form of 32a³+12a² is 4a²(8a + 3).

The correct result of the factorization of the expression is 4a2(8a + 3).

What is factorization?

The term factorization is used in mathematics to show the expression of algebraic term in terms of factors. In this case we are to factorize the expression 32a3 + 12a2.

The common factor here is 4a2. Hence, the correct result of the factorization of the expression is 4a2(8a + 3).

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How does the range of compare with the range of the parent function ? the range of both f(x) and g(x) is all real numbers the range of both f(x) and g(x) is all nonzero real numbers the range of f(x) is all real numbers, the range of g(x) is all real numbers except 6 the range of f(x) is all nonzero real numbers, the range of g(x) is all real numbers except 6.

Answers

Answer:

The range of f(x) is all real numbers, the range of g(x) is all real numbers except 6

Explanation:

It should be this but I'm not completely sure

The range of f(x) is all real numbers, the range of g(x) is all real numbers except 6.

What is range?

Range is the subset of codomain. Codomain is y when we have function mapping as f: xy

Here, x is domain, y is codomain and the set of values  y  can take is range.

so, in case of f(x) = it can take all real values except zero

Since, at zero it will become not defined.

In case of g(x)=  it can take all real values  except zero

Since, at zero g(x) will become not defined.

The domain of a function is the set of all input values of the function

The vertical asymptote is x = 0

The horizontal asymptote is y = 0

The domain is all nonzero real numbers

The range is all nonzero real numbers

The function is given as:

The vertical asymptote. The value of x cannot  be 0.

So, the vertical asymptote is the horizontal asymptote.The value of c cannot  be 0. So, the function cannot be 0. So, the horizontal asymptote is:

The domain and the value of x cannot  be 0. This means that, the possible values of x is nonzero. So, the domain: Is all nonzero real numbers the range the value of c cannot  be 0.So, the function cannot be 0. The range: Is all nonzero real numbers.

Therefore, The range of f(x) is all real numbers, the range of g(x) is all real numbers except 6.

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Which expression is equivalent to the expression below?.

Answers

Answer:

Which expression? You need to add the expression.

Explanation:

According to the excerpt, who is most likely to be qualified to become a texas supreme court justice?.

Answers

Answer:

hello i am new to brainly i am new. sorry i just started

Explanation:

D. a practicing lawyer

What is ​ BC ​? Enter your answer in the box. BC= units An isosceles triangle A B C. Side B C is the base. Vertex A is below base B C. Sides A B and A C are equal. Sides A B and A C are labeled with single tick marks. Side A B is labeled as 8 x minus 4, side A C is labeled as 5 x plus 11, and side B C is labeled as 4 x minus 2.

Answers

Answer:

25

Explanation:

i just took the test :)

Every morning we drink milk to strengthen your bones.

Answers

Answer:

True

Explanation:

What is the completely factored form of 2x2 – 32? (2x2 16)(x – 16) 2(x 4)(x – 4) 2(x 8)(x – 4) 2(x – 8)(x – 4).

Answers

Answer:

b

Explanation:

The complete factor form of [tex]2x^2[/tex] – 32 will be  2(x + 4)(x – 4). The correct option is B.

What is a factor?

A factor is basically a number that divides another number by itself and leaves no remainder.

In other words, if multiplying two whole numbers yields a product, the numbers being multiplied are factors of the product because the product is divisible by them.

Factors in multiplication are integer arithmetic that are multiplied together to find other integers.

The quickest way to find a number's factors is to divide it by the smallest prime number (greater than 1) that goes into it evenly and leaves no remainder.

We know that,

[tex]a^2-b^2=(a+b)(a-b)[/tex]

It is given that,

[tex]2x^2-32[/tex]

[tex]2(x^2-16)[/tex]

[tex]2(x^2-(4^2))[/tex]

2(z+4)(x-4).

Thus, the answer is 2(x+4)(x-4).

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If force f, volume v and density d are taken as fundamental quantities, then the representation of pressure p will be.

Answers

Answer:

If force F, volume V and density D are taken as fundamental quantities, then the representation of pressure P will be

Explanation:

The one on the top is correct

What is the simplified form of StartFractio negative 24 m Superscript 5 Baseline n Superscript 4 Baseline Over 8 m Superscript negative 7 Baseline n Superscript negative 2 Baseline EndFraction? Assume m not-equals 0, n not-equals 0. StartFraction 3 Over m Superscript 35 Baseline n Superscript 8 Baseline EndFraction Negative StartFraction 3 n squared Over m squared EndFraction Negative 3 m Superscript 12 Baseline n Superscript 6 Baseline 3 m Superscript 35 Baseline n Superscript 8 Baseline.

Answers

Answer:

C

Explanation: hope this helps (:

Answer:

c

Explanation:

took the test

watz good ya'll, just saying hi.

Answers

Answer:

you should ask real and educational questions

plsss pa brainliest

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