Complete and balance the following oxidation-reduction reaction in basic solution

Answer:

Hello

12 grams

The mass of one mole of carbon-12 atoms is 12 grams.

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Explanation:

the reactions at the cathode:

1. the reduced active metal is water, other than that the metal will be reduced

2. H⁺ of the acid will be reduced

the reactions at the anode:

1. if the electrodes are not inert then the metal is oxidized

2. If inert then:

a. OH⁻ from the base will be oxidized

b. The halogen metal will oxidize

1. HCl

H⁺ of the acid will be reduced

Cathode: 2H⁺(aq) + 2e⁻ ⇒ H₂(g)

The halogen metal will oxidize

Anode: 2Cl⁻(aq) ⇒ Cl₂(g) + 2e⁻

2. NaNO₃

Na : active metal, water reduced

Cathode: 2H₂O + 2e ⇒ 2OH- + H₂

NO₃: oxyacid, water will be oxidized

Anode: 2H₂O ⇒ 4 H + + O₂ + 4e

3. CuCl

Cu : not active metal

Cathode: Cu²⁺ (aq) + 2e ⇒ Cu (s)

Cl : The halogen metal will oxidize

Anode: 2Cl⁻ (aq) ⇒ Cl₂ (g) + 2e

Answer:

b) Na, Mg, K

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Answer:  True

Explanation: Transferring energy to or from a substance can change its state. Heating a substance in the solid state will cause it to melt, which changes it to the liquid state. Continued heating will cause the substance to evaporate or boil, which changes it to the gas state.

Some substances in the solid state can change straight to the gas state. This process is called sublimation.

A substance in the gas state condenses when it is cooled, which changes it to the liquid state. Continued cooling causes it to freeze, which changes it to the solid state.

Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body.[2][8] These contrast with benign tumors, which do not spread.[8] Possible signs and symptoms include a lump, abnormal bleeding, prolonged cough, unexplained weight loss, and a change in bowel movements.[1] While these symptoms may indicate cancer, they can also have other causes.[1] Over 100 types of cancers affect humans.[8]

Tobacco use is the cause of about 22% of cancer deaths.[2] Another 10% are due to obesity, poor diet, lack of physical activity or excessive drinking of alcohol.[2][9][10] Other factors include certain infections, exposure to ionizing radiation, and environmental pollutants.[3] In the developing world, 15% of cancers are due to infections such as Helicobacter pylori, hepatitis B, hepatitis C, human papillomavirus infection, Epstein–Barr virus and human immunodeficiency virus (HIV).[2] These factors act, at least partly, by changing the genes of a cell.[11] Typically, many genetic changes are required before cancer develops.[11] Approximately 5–10% of cancers are due to inherited genetic defects.[12] Cancer can be detected by certain signs and symptoms or screening tests.[2] It is then typically further investigated by medical imaging and confirmed by biopsy.[13]

Answer:

Graph is attached below.

Explanation:

Go to insert, then chart, then select line, then go to sheets and edit it to fit what you need it to say.

Hope this helps! Please let me know if you need more help, or if you think my answer is incorrect. Brainliest would be MUCH appreciated. Have a great day!

−xXheyoXx

Answer:

D. Chromosomes

Explanation:

        The DNA is found in the nucleus of each cell. It is in "thread-like" structures, which are called "D. Chromosomes."

Answer:

gives shape and support to the body

Answer:

Gives shape and support to the body

Explanation:

Answer:

Geology in everyday life is not restricted to resources. It is also about hazards and risk associated with rock falls, radon, landslides, quick clay, landslides and earthquakes. Geology is detective work. Geology helps us understand climate change in the past, which may help us predict future scenarios.‏

Explanation:

We have that for the Question "describe 3 ways rocks make our lives easier?" it can be said that 3 ways rocks make our lives easier is

From the question we are told

Describe 3 ways rocks make our lives easier?

Generally

There are many ways that rocks help us a human every day but these as very distinnctive 3

Metals are made from rocks,Rocks are melted and used to make metals using

variant method

Rocks have for the longest time helped us in representation of words and letter,inscriptions in general over the years

Rocks are the source of the worlds most renounced jeweries as the beauty are priced highly

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By applying the Boyle's equation and substituting our given data the volume of the container was found to be 418.14 Litres

Given Data

We know that the relationship between pressure and temperature is given as

PV = nRT

R = 0.08206

Making the volume subject of formula we have

V= nRT/P

Substituting our given data to find the volume we have

V = 5.1169*0.08206*911/0.9148

V = 382.522353554/0.9148

V = 418.14 L

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Answer: Element

Explanation: Table sugar, or sucrose, is not a mixture. It is a compound. Let me start with a pure substance and work up from there. Elements are pure substances because they cannot be broken down any more.

Answer:

I would guess a element

Explanation:

Answer:

When the glass rod is rubbed with a silk cloth,  The glass quickly loses electrons, and the silk takes the electrons out of the glass rod. So after rubbing, the glass rod becomes positively charged and the silk gets negative charge. So glass acquires a greater order than silk as electron losses.

Explanation:

Answer:

Polymer can be both natural and synthetic

Explanation:

Answer:

increases

Explanation:

When an atom of phosphorus becomes a phosphide ion (P3–), the radius increases because 3 more electrons are added, and they placed on higher sublevels.

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I love u.

U matter.

The world needs u

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ur beautiful  no matter ur shape, size, color, gender.. anything

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Answer:

m=26.0 g

v₁=13.2 mL

v₂=23.5 mL

p=m/(v₂-v₁)

P=26.0/(23.5-13.2)=2.524 g/cm³

Explanation:

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have a good day!

Answer:

87.5 mi/hr

Explanation:

Because a = Δv / Δt (a = vf - vi/ Δt), we need to find the acceleration first to know the change in velocity so we can determine the final velocity.

vf = 60 mi/hr

vi = 0 mi/hr

Δt = 8 secs

a = vf - vi/ Δt

= 60 mi/hr - 0 mi/hr/ 8 secs

= 60 mi/hr / 8 secs

= 7.5 mi/hr^2

Now that we know the acceleration of the car is 7. 5 mi/hr^2, we can substitute it in the acceleration formula to find the final velocity when the initial velocity is 50 mi/hr after 5 secs.

vi = 50 mi/ hr

Δt = 5 secs

a = 7.5 mi/ hr^2

a = vf - vi/ Δt

7.5 = vf - 50 mi/hr / 5 secs

37.5 = vf - 50

87.5 mi/ hr = vf

The pH during the titration 30.0 mL OF 0.1000 M NaOH(aq) with 0.1000 M HCl(aq) of after 18.5 mL of the acid is added is : 12.38

First step : Determine the number of moles

Number of moles of NaOH = 0.1000 M * 30.00 mL = 3.0 mmol

Number of moles of HCl = 0.1000 M * 18.5 mL =  1.85 mmol

The net moles of NaOH = 3.0 mmol - 1.85 mmol = 1.15 mmol

Next step :

The total volume of the solution = 30.00 + 18.51  = 48.51 mL

[ NaOH ] = [ OH⁻ ] = net moles / total volume

                             = 1.15 mmol / 48.5 mL = 0.023711 M

Final step : Determine the pH value

pOH = – log[OH⁻] = – log ( 0.023711 )

                             = 1.625

Therefore :

pH value = 14 - pOH

               = 14 - 1.625 ≈ 12.38

Hence we can conclude that The pH during the titration of after 18.5 mL of the acid is added is : 12.38

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Answer:

Image result for What evidence in Side View lets you know that upwelling is happening in these locations?

Winds blowing across the ocean surface often push water away from an area. When this occurs, water rises up from beneath the surface to replace the diverging surface water. This process is known as upwelling.

Explanation:

The bond energy is the energy that must be supplied to break the bond. Ionic substances are held together by strong bonds.

This question is incomplete but I will try to explain what is meant by average bond energy as the tables are missing.

The average bond energy of a bond simply means the energy that is stored in that bond as it holds two atoms together. It is equal to the energy that must be supplied to break the bond. The numerical value of the bond energy can not be deduced as the data is missing.

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Answer:

A.

Explanation:

The melting of wax is just a physical change, not a chemical one, since melted wax can still reharden and go back to its original state. All the other choices are non-reversible, chemical changes.

Hopefully this helps- let me know if you have any questions!

Answer:

Melting of candle wax when heated

Explanation:

So what's the difference

We can get candle wax back when we melted it so it's physical reaction

Answer:

You could write about someone stealing something

Explanation:

And further explain the panic you felt and how the atmosphere changed

Is male circle or square? and is the disorder black or white?

Answer:2 duce dose

Explanation:

jit you see the picture now vote

Given parameters:

duration of fall  = 6s

Unknown:

Speed of the rock before it hits the ground  = ?

Solution:

To solve this problem, we apply one of the appropriate motion equations;

           V = u + gt

Where V is the final velocity

           u is the initial velocity

           t is the time taken

           g is the acceleration due to gravity  = 9.8m/s²

The initial velocity is 0;

     So;

              V = gt

Input the parameters and solve for V;

                V = 9.8 x 6  = 58.8m/s

The velocity before hitting the ground is 58.8m/s

Answer:

If a mineral with a density of 6 g/cm3 is broken into 3, the density of each new piece is 6 [tex]\frac{g}{cm^{3} }[/tex]

Explanation:

Density is a quantity that allows us to measure the amount of mass in a certain volume of a substance. In other words, density is the property that matter, whether solid, liquid or gas, has to compress into a given space, the amount of mass per unit volume.

As density is a physical property of matter that is defined as the ratio of an object's mass to its volume, each material or substance has its own density regardless of its size because the ratio between mass and volume is the same.

If a mineral with a density of 6 g/cm3 is broken into 3, the density of each new piece is 6 [tex]\frac{g}{cm^{3} }[/tex]

Answer:

Example 1 represents a solid and Example 2 represents a gas.

Explanation:

Solids usually have closely packed molecules and gas molecules usually exhibit constant random motion.

Taste and colour of water is different in both pot and plastic bowl.

The appearance of the water in the pot is different from that of the water in the plastic bowl because of the colour. We know that water adopt the colour of the container in which it has been kept.

The taste of water in the pot is somewhat sweeter and colder than water present in the pot due to presence of pores and composition of pot so we can conclude that taste and colour of water is different in both pot and plastic bowl.

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Answer: The water in the pot is fully red because  it is being heated the color is spreading more and the water in the pot is clear because condensation leaves the color and salt behind. The water in the plastic bowl taste more like regular water it does not have a taste but the water in the pot has a biterness taste to it.

Explanation:

Explanation:

write a news story using the clues given below