The answer to this question is D as it says in the answer sheet of the question paper but how?

The Answer To This Question Is D As It Says In The Answer Sheet Of The Question Paper But How?

Answers

Answer 1

Answer:

D

Explanation:

Because of their complementary nature, the oxidation and reduction processes together are referred to as redox reactions. The reactant that brings about the oxidation is called the oxidizing agent, and that reagent is itself reduced by the reducing agent. Examples are, mercury(II) oxide, oxygen, and the copper(II) ion are oxidizing agents, and carbon, hydrazine, and zinc are the reducing agents.

Answer 2

Answer:D

Explanation:Because of their complementary nature, the oxidation and reduction processes together are referred to as redox reactions. The reactant that brings about the oxidation is called the oxidizing agent, and that reagent is itself reduced by the reducing agent. Examples are, mercury(II) oxide, oxygen, and the copper(II) ion are oxidizing agents, and carbon, hydrazine, and zinc are the reducing agents.


Related Questions

How do these momenta compare the ballon rocket?

Answers

In activity 8 balloon rocket which is relevant to the third law of motion. The momenta are the same in magnitude.

why elements with more than 20 protons always have a more neutrons than protons?​

Answers

Answer:

Elements that have atomic numbers from 20 to 83 are heavy elements, therefore the ratio is different. The ratio is 1.5:1, the reason for this difference is because of the repulsive force between protons: the stronger the repulsion force, the more neutrons are needed to stabilize the nuclei.

Arrange the compounds in order of increasing entropy (S).

CH3OH(s)

CH3OH(l),

CH3OH(g),

CH3CH2OH(g)



CH3OH(s) > CH3OH (l) > CH3OH(g) > CH3CH2OH(g)



CH3OH(s) < CH3OH (l) < CH3OH(g) < CH3CH2OH(g)

3 Of 20

Answers

Answer:

CH3OH(s)<CH3OH(l)<CH3OH(g)<CH3CH2OH(g)

Explanation:

Entropy is defined as the degree of disorderliness of a system. The more orderly a system is, the more its entropy tends to zero.

Hence solid particles have the least entropy because solid particles do not translate. The entropy of liquid particles is greater than that of solid particles since liquid particles can translate. Gas particles have the highest entropy because gas particles move at a very high velocity owing to minimal intermolecular interaction.

Also, the heavier the molecules of a substance, the larger its molar entropy therefore, CH3CH2OH(g) exhibits the greatest entropy.

Which of these describes why a stent is used? ​

Answers

A stent is a small mesh tube that holds open passages in the body, such as weak or narrow arteries.

Explanation:

To open an artery near the heart

just took the quiz




12. If a reaction is exothermic,
a) It takes more energy to break the bonds of the reactants than is released when the bonds in
the products are formed
b) More energy is released when the bonds in the products are formed than is used to break
the bonds in the reactants
c) The same amount of energy is used to break the bonds of the reactants as is
released when the bonds in the products are formed
d) The temperature goes down

Answers

Answer:

In the case of an exothermic reaction, the reactants are at a higher energy level as compared to the products, as shown below in the energy diagram. In other words, the products are more stable than the reactants. Overall Δ H ΔH ΔH for the reaction is negative, i.e., energy is released in the form of heat.

Explanation:

State the name(s) of the sub-atomic particle(s) that have/has a positive charge. Answer with the name of the particle(s) only.

A. Neurons
B. Protons
C. Electrons

Answers

Protons hope this helps

Answer:

protons because they have the most positive charge

Nitrogen makes up what part of the air?

3/5
2/5
4/5

Answers

About 4/5.

Hope this helps.

Answer:  c

Explanation:

Given that the acceleration due to gravity is 10N/Kg, calculate the weight of the
Mass (Show all you're working)​

Answers

Answer:

Weight = 500 Newton

Explanation:

Given the following data;

Acceleration due to gravity = 10N/Kg

Weight can be defined as the force acting on a body or an object as a result of gravity.

Mathematically, the weight of an object is given by the formula;

[tex] Weight = mg [/tex]

Where;

m is the mass of the object.g is the acceleration due to gravity.

Note: In order to calculate the weight of a mass, it's required that the mass of an object or body is given.

However, in this particular question it was omitted in error and as such i would assume a value.

Let mass, m = 50 kg

Substituting into the formula, we have;

[tex] Weight = 50 * 10 [/tex]

Weight = 500 Newton

Hello, Flashligh explain where the energy comes from and how it is affecting change or putting an object in motion

Answers

Answer:

Our energy supply comes mainly from fossil fuels, with nuclear power and renewable sources rounding out the mix.

The energy associated with an object's motion is called kinetic energy. Kinetic energy is the energy of motion. All moving objects have kinetic energy

Explanation:

Answer:

Kinetic energy is the energy of motion. All moving objects have kinetic energy. When an object is in motion, it changes its position by moving in a direction: up, down, forward, or backward. As he winds up and releases the ball, the stored energy is changed into kinetic energy, the energy of motion!So that , energy comes from and how it is affecting change or putting an object in motion.

Explanation:

I ain't flashligh

What is microorganisms

Answers

Answer:

Technically a microorganism or microbe is an organism that is microscopic. The study of microorganisms is called microbiology. Microorganisms can be bacteria, fungi, archaea or protists. The term microorganisms does not include viruses and prions, which are generally classified as non-living.

What's the difference between a substance and a mixture

Answers

Answer:

a pure substance consists only of one element or one compound. a mixture consists of two or more different substances, not chemically joined together.

Explanation:

Radhe Radhe

Answer:

A pure substance consists of only one element or one compound. Whereas, a mixture consists of two or more different substances which aren't chemically joined together.

picture below

need done by 2:30



thanks, God bless your week

Answers

1. [tex]\sf \bf {\boxed {\mathbb {Evaporation}}}[/tex] - The changing of liquid to a gas.

2. [tex]\sf \bf {\boxed {\mathbb {Automobile}}}[/tex] - The major source of pollution.

3. [tex]\sf \bf {\boxed {\mathbb {Greenhouse \:effect}}}[/tex] - Carbon dioxide and water vapor trapping heat given off by Earth.

4. [tex]\sf \bf {\boxed {\mathbb {Ozonosphere}}}[/tex] - Layer absorbing ultraviolet rays.

5. [tex]\sf \bf {\boxed {\mathbb {Condensation}}}[/tex] - The changing of a gas to a liquid.

6. [tex]\sf \bf {\boxed {\mathbb {Ionosphere}}}[/tex] - Layer responsible for reflecting radio waves.

7. [tex]\sf \bf {\boxed {\mathbb {Troposphere}}}[/tex] - The layer in which weather changes.

[tex]\large\mathfrak{{\pmb{\underline{\orange{Mystique35 }}{\orange{❦}}}}}[/tex]

Answer:

1. Evaporation :- The changing of a liquid to a gas.

2. Automobile :- The major source of pollution.

3. Greenhouse effect :- Carbon dioxide and water vapour trapping heat gives off by Earth.

4. Ozonosphere :- Layer absorbing ultraviolet rays.

5. Condensation :- The changing of gas to a liquid.

6. Ionosphere :- Layer responsible for reflecting radio waves.

7. Troposphere :- The layer in which weather changes.

List two possible steps where impurities may be gained, which would appear to be an increase in copper

yield (why you may get more than 100% of the copper back at the end). Be specific about the steps and

how they might add impurities.

Answers

Answer:

i) During washing

ii) During Measurement

Explanation:

The two possible steps are :

i) During washing : during the washing method the residue may be not completely dried out and this residue ( water) will add up to the final product ( copper yield ) and this kind of error is called human error.

ii) During measurement : If the weighing instrument is faulty there might be addition  in value of the final copper yield which will see the final yield value > 100% . this error occurs when the initial value and final value is  been weighed

The chemical reaction between the reagents luminol and bleach produces a brief flash of light. Which change would most likely make the light produced in the reaction last longer?




increasing luminol concentration


adding a catalysts


decreasing the quantity of both reagents.


decreasing the temperature

Answers

Decrease the temperature

How many moles are in 89 grams of KCI

Answers

Answer:

The number of moles in 89 grams of KCl is approximately 1.193 moles

Explanation:

A mole of an element or compound, is the quantity of the element or compound that contains 6.022 × 10²³ molecules of the element or compound, such that the molar mass of one mole is dependent on the mass of each molecule of the element or compound that make up the 6.022 × 10²³ particles

The given parameters are;

The mass of the KCl = 89 grams

The Molar mass, MW, of potassium, K = 39.1 g/mole

The Molar mass, MW, of chlorine, Cl = 35.5 g/mole

Therefore, given that KCl, has one K and one Cl, per mole, we have;

The Molar mass, MW, of potassium chloride, KCl = (39.1 + 35.5) g/mole = 74.6 g/mole

[tex]The \ number \ of \ moles, n=\dfrac{Mass}{Molar \ mass, MW}[/tex]

Therefore, the number of moles of KCl in 89 g, 'n' is given as follows;

n = (89 g)/(74.6 g/mole) ≈ 1.193 moles

The number of moles in 89 grams of KCl, n ≈ 1.193 moles.

what do you mean by chemical reaction​

Answers

Answer:

Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products.

A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.

Chemical reactions are an integral part of technology, of culture, and indeed of life itself. Burning fuels, smelting iron, making glass and pottery, brewing beer, and making wine and cheese are among many examples of activities incorporating chemical reactions that have been known and used for thousands of years. Chemical reactions abound in the geology of Earth, in the atmosphere and oceans, and in a vast array of complicated processes that occur in all living systems.

Explanation:

hope it help

plss brainlys me

Answer:

Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products

Explanation:

Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.

How many grams are in 36.2 moles of Iron (I) fluoride?

Answers

Answer:

4084.808 grams (SigFigs: 4085 grams)

Explanation:

The molar mass of Iron fluoride is 112.84 g/mol.

To calculate the mass, multiply the molar mass by the number of moles.

36.2 mol * 112.84 g/mol = 4084.808 g

Convert to Sigfigs (if necessary):

4085 g

Answer:

The person above is correct

Explanation:

1
N
3
5
6
7
| 8 9 10
Which is evidence that a chemical reaction has likely occurred?
a liquid slowly losing volume
the formation of a precipitate
boiling water releasing steam
a change in the shape of a solid

Answers

Answer:

The new substance will need more energy to form its chemical bonds than the old substance will release. ... More energy will be released from the old substance than the new substance will need to form its chemical bonds.

Explanation:

This is the answer I got. Hope it's really helpful

Answer:

"Which is evidence that a chemical reaction has likely occurred?"

The correct answer would be,

B. the formation of a precipitate

Explanation:

Got it right on my test, have a great day!

1.875mps into kilometers per hour​

Answers

Answer:

6,75 kilometres per hour

What does the emission spectrum of a molecule show?

A. The energy the molecule absorbs as it undergoes a reaction to break down into its elements
B. The wavelengths of light a molecule gives off when an electron moves to lower energy levels
C. The wavelengths of light a molecule takes in when an electron moves to a higher energy level
D. The energy the elements give off as they undergo a reaction to form a molecule

Answers

Answer:

B. The wavelengths of light a molecule gives off when an electron moves to lower energy levels

identify if it is mixture,compound or element ​

Answers

Answer:

12:35

Try it this way. egst11245

Answer:

A is mixture

B and C are compund

D and E are elements

F is also mixture

What mass of sulfuric acid, H2SO4, is required to react with 3.27 g of potassium hydroxide, KOH? The products of this reaction are potassium sulfate and water.


Have both the unbalanced and balanced chemical equations.

Explain how to find the molar mass of the compounds.

Explain how the balanced chemical equation is used to find the ratio of moles

Explain how many significant figures your answer needs to have.

The numerical answer

Answers

Answer:

pa help din ako jan please

Answer:

Don't plagiarize here.

Explanation:

Your online teacher knows that you are looking here for the answer!!!!

Which is a property of all acids?

A. They increase the OH^- concentration in solution.
B. They contain OH^- ions.
C. They contain H3O^+ ions.
D. They increase the H^+ concentration in solution.​

Answers

D , for example HCl consists of H+ and Cl- ions

Acids increase the [tex]H^+[/tex] concentration in solution. Therefore, the correct option is D.

One of their essential characteristics is the ability of all acids to increase the concentration of H+ ions (protons) in a solution. Acids are chemicals that when dissolved in water add protons to the solution. As a result of this proton donation, the amount of [tex]H^+[/tex]ions in the solution increases, thereby lowering the pH. It is important to remember that not all acids contain[tex]H_3O^+[/tex] ions directly; Instead, [tex]H^+[/tex] ions can react with water molecules to generate [tex]H_3O^+[/tex] ions (hydronium ions).

Therefore, the correct option is D.

Learn more about Acids, here:

https://brainly.com/question/29796621

#SPJ2

Here is a word equation for a chemical reaction.

copper oxide + sulphuric acid
---> copper sulphate + water

Write down everything that the word equation tells you about the reaction.

Answers

Explanation:

From the word equation, it shows that when copper oxide reacts with sulphuric acid, a double replacement reaction will occur, where copper and sulphate forms a bond with each other, and so do water.

The reaction of copper oxide with sulphuric acid to form copper sulphate and water can be written as follows: [tex]CuO + H_{2}SO_{4} \rightarrow CuSO_{4} + H_{2}O[/tex]

What is a balanced reaction?

In a balanced chemical reaction all the reactants will be in a correct stochiometric ratios where, each elements have to be equal in number on both side of the reaction.

The given reaction is an example of double displacement reaction in which two species are displaced. Here, oxygen from copper oxide goes to water and sulphate group from sulphuric acid displace to copper sulphate.

This product of this reaction i.e., copper sulphate have cyan color and this reaction is exothermic.  Thus, the balanced reaction can be written as follows;

[tex]CuO + H_{2}SO_{4} \rightarrow CuSO_{4} + H_{2}O[/tex]

To learn more about double displacement reactions, refer the link below:

https://brainly.com/question/13870042

#SPJ2

How many moles of NaOH are present in 22.0 mL of 0.140 M NaOH?

Answers

Answer:

Mole of NaOH = 0.00308 mole

Explanation:

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

Volume = 22 mL

Molarity = 0.140 M

Mole of NaOH =?

Next, we shall convert 22 mL to L. This can be obtained as follow:

1000 mL = 1 L

Therefore,

22 mL = 22 mL × 1 L / 1000 mL

22 mL = 0.022 L

Finally, we shall determine the number of mole of NaOH in the solution. This can be obtained as shown below:

Volume = 0.022 L

Molarity = 0.140 M

Mole of NaOH =?

Molarity = mole / Volume

0.140 = Mole of NaOH / 0.022

Cross multiply

Mole of NaOH = 0.140 × 0.022

Mole of NaOH = 0.00308 mole

Thus, 0.00308 mole of NaOH is present in the solution.

Question 1 of 10
What does a low number on the pH scale say about a solution?
O A. The solution is an acid,
O B. The solution is changing.
O C. The solution is a base.
O D. The solution sg neutral.

Answers

The answer to that multiple choice would be A, the solution is an acid
the lower the pH, the higher the acidity, A

The atomic number and the mass number of 18 and 40. Write the information conveyed by this statement.​

Answers

There are 18 protons and electrons and 22 neutrons in the atom

Which of the following is an example of commensalism?

Answers

Answer: A tick on a deer

Explanation:

because commensalism is a type of symbiotic relationship in which one species benefits, while the other species is neither harmed nor helped

please put brainlest for me if you found this helpful

An example of commensalism is tick on a deer. Therefore, option A is correct.

What is commensalism ?

Another sort of symbiotic interaction is commensalism, in which one organism benefits and the other does not in any way suffer. Golden jackals will pursue tigers as they hunt in order to consume the tigers' leftovers.

The term "commensalism" is derived from the word "commensal," which in human social interaction refers to "eating at the same table," and which itself is derived through French from the Medieval Latin term "commensalis," which refers to "sharing a table," from the prefix com-, which means "together," and mensa, which refers to "table" or "meal."

The simplest definition of commensalism is that it is a form of symbiosis in which one organism gains while the other neither gains nor suffers harm. The three primary forms of commensalism are phoresy, metabiosis, and inquilinism.

Thus, option A is correct.

To learn more about commensalism, follow the link;

https://brainly.com/question/14224704

#SPJ12

What kind of pattern can you see about elements in the same period with respect to electron
structures?

Answers

Answer: A pattern of same atomic orbitals can be seen about elements in the same period with respect to electron structures.

Explanation:

The horizontal rows in a period table are called periods.

Elements present in the same period will have same atomic orbitals.

For example, electronic distribution of Na is 2, 8, 1 and it is a third period element.

Similarly, electronic distribution of Cl is 2, 8, 7 and it is also a third period element.

Hence, both Na and Cl will have K, L, M shells, that is, they have three atomic orbitals.

Thus, we can conclude that a pattern of same atomic orbitals can be seen about elements in the same period with respect to electron structures.

Gas occupies 30 Liters at 2.0 atm pressure and 27° Celsius. How many moles of gas are present

Answers

Your answer to this question is 2.44 mol.
Other Questions
.Imagine that you are the project manager for this initiative in theNorth West Province. Outline measures you would take to ensurethat this project succeeds and is sustainable. The lamp has a resistance of 10 ohms each resistor has a resistance of 10 ohms what is the total resistance of the circuit If the bearing of B from A is 302, what is the bearing of a from B ? write a letter to your friend in another school describing for him the teacher you like most in your school note the punctuation in this section. what unusual punctuation did you notice? Explain the difference between pastime focus and present time focus ubuhle nobubi besibonelelo sezingane Why does the congruency of all angles not prove the congruency of two triangles? pls help I was sick from school and have some much more work to do have a good day yall Which point of view is used when narrators tell stories from their own perspectives using I, me, we, or my? HELP! ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Ty ty ty ty tysmmmmm! I hope you have a amazing day!. If b=3-2s and A= -2s^2+2s+3 find an expression that equals 2b+2A in standard form 5. A sample of benzene (C6H6), weighing 7.05 g underwent combustion in a bomb calorimeter by the following reaction:2 C6H6 (l) + 15 O2 (g) 12 CO2 (g) + 6 H2O (l)The heat given off was absorbed by 500 g of water and caused the temperature of the water and the calorimeter to rise from 25.00 to 53.13 oC. The heat capacity of water = 4.18 J/g/oC and the heat capacity of the calorimeter = 10.5 kJ/oC. (1) what is the H of the reaction? Using the definitions at the beginning of the module describe (2) the calorimeter + contents, (3) the type of process. What is a great a hook for a life goal essay? Can someone tell me the answer? Tomorrow I have exam and they will test this topic. I forgot, and I can't find it on my learner's book.1) What is the function of a scar in a seed?2) What is the function of embryo in a seed? holaaaaaaaaaaaaaaaaa plz help i need this quick :) Quadrilateral ARMY is rotated 90 degrees about the origin. Draw the image of this rotation. factorise fully the following expression (x2-3x-10) by first considering the angles on line abc show that ac is parallel to df Sample Food ChainLeaf------> Caterpillar--------> Chameleon---------> Snake-----------> MongooseLooking at the above picture, what is true?A) The Mongoose is the tertiary consumerB) The chameleon eats the snakeC) The chameleon is an autotrophD) If Mongoose is removed, snake population would increase. Who do the brobdignagian represent what ?