Rank the following atoms from the most electronegative (top) to the least electronegative (bottom).

Answer:

Explanation:

The type of reaction represented by the diagram is (C). Fission

Nuclear fission can be defined as a reaction in which the nucleus of an atom splits or breaks into two or more smaller portions of nuclei.

Nuclear fission is so important and is often seen or encountered when dealing with elements with high nuclear properties.

In conclusion,  the type of reaction represented by the diagram is Fission

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The moles of the gas sample present is 1.30 , Option C is the right answer.

Ideal Gas Equation states that for an ideal gas , the product of pressure and volume is equal to the product of moles , universal gas constant and the temperature.

PV =nRT

Given in the question

Volume = 20 Litre

T = 373 K

P = 203kPa

R =8.31 L - kPa/mol -K.

Therefore

203 * 20 = n *8.31 *373

n = 1.30 moles

Therefore the moles of the gas sample present is 1.30 .

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Answer:

the answer to the qustion is 0.013089701 na

Explanation:

n/a

The structure of the cytosine base after catalysis by DNMT is 5'Mecytosine.

Cytosine (C) is one of the four nucleotide bases in DNA, with the other three being adenine (A), guanine (G) and thymine (T).

Methylation of the cytosine base is catalyzed by the enzyme DNA methyltransferase (DNMT), and S-adenosyl methionine (SAM) functions as the methyl group donor.

Hence, the structure of the cytosine base after catalysis by DNMT is 5'Mecytosine.

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Answer:

In water, bases dissolve and provide hydroxide (OH-) to the surrounding solution. This lowers the acidity of the solution.

Answer:

the aNSWRER TOP UR QUESTION IS THAT I NMEED TO ANSWER THIS SO I DONT HAVE TO WQATCH ADS  LOL

Explanation:

DSADSDASDASDASDSDSDSDSDS and i knowq chem is bio chwem is

Food industries require that reaction rates be lowered and this can be done by addition of preservatives and by freezing food substances.

The rate of a reaction is a measure of amount of substances converted to products per unit.

Substances that speed up rate of reactions are known as catalysts.

Some catalysts though, reduce or slow down the rate of reactions.

An industry that requires the rate of reactions to slow down is the food industry.

Some methods employed to slow down reaction rates include:

Therefore, food industries require that reaction rates be lowered and this can be done by addition of preservatives and by freezing food substances.

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Answer:

See explanation.

Explanation:

This will never naturally occur but you can tweak the system quantum mechanically to temporarily reverse entropy.

Answer:

V = 0.41L

Explanation:

[tex]c=\frac{n}{V}\\n=cV\\14.7=6.0V\\ \\V=0.41l[/tex]

The volume of the air mattress filled with 0.55 moles of air and has a temperature of 295 k and an absolute pressure of 3.5 kilopascals is 386L.

The volume of a gas can be calculated by using the ideal gas law equation as follows:

PV = nRT

Where;

0.0345 × V = 0.55 × 0.0821 × 295

0.0345V = 13.32

V = 386L

Therefore, the volume of the air mattress filled with 0.55 moles of air and has a temperature of 295 k and an absolute pressure of 3.5 kilopascals is 386L.

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Answer:

The answer is 34.2 L.

Explanation:

Ideal Gas Law = PV = nRT
(where P is pressure, V is volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.)

Plug in the known values into the Ideal Gas Law equation:

3.5 kPa * V = 0.55 moles * 8.31 J/mol*K * 295 K

Finally, solve for V:

V = (0.55 moles * 8.31 J/mol*K * 295 K) / 3.5 kPa

= 34.2 L

Answer:

ok so which answer do you want if you want all then here's this

Explanation:

you should remember that you aren't the only on who dosent know the answers because I don't so ask a parent

Answer:

20 ml

Explanation:

2.5 M   x      =     1 M  * 50

x = 20 ml

Answer:

Q1. False

Q2. True

Explanation:

gas molecules are not that at far than dimensions molecules

Answer:

both particles and waves

Explanation:

this is known as wave-particle duality.

I hope this helps.

Have a nice day.

The answer to the product of the reaction of cyclopentanone with ethylene glycol, p−toluenesulfonic acid, and benzene is attached in the figure.

A chemical process in which substances act mutually on each other and are changed into different substances, or one substance changes into other substances is called a reaction.

Chemical reactions are an integral part of technology, of culture, and indeed of life itself.

The Product obtained of the reaction of cyclopentanone with ethylene glycol, p−toluenesulfonic acid, and benzene is attached in the figure .

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Answer:

81.08g of H[tex]_{2}[/tex]O will be produced.

Explanation:

Write down the balanced chemical equation:

[tex]B_5H_9 + O_2[/tex] ⇒ [tex]B_2O_3+H_2O[/tex]

[tex]2B_5H_9+12O_2[/tex] ⇒ [tex]5B_2O_3+9H_2O[/tex]

Determine the limiting reagent:

[tex]B_5H_9[/tex] :-    126/63.12646 = 1.995993 mol

               1.995993/2 = 0.9979965

[tex]O_2[/tex] :-         192/31.9988 = 6.000225 mol

               6.000225/12 = 0.50001875

Therefore, [tex]O_2[/tex], is the limiting reagent.

Use stoichiometry ratios to determine the number of moles of water produced:

         [tex]O_2[/tex]         :        [tex]H_2O[/tex]

         12          :          9

  6.000225   :       4,500168756328362

Use the mole formula to calculate the mass of water produced:

[tex]n=\frac{m}{M} \\m=nM\\m=(4.500168756328362)(18.01528)\\m=81.08g[/tex]

Stamen is not an outer covering its the reproductive organ of the plants.

Outer covering of plants is useful in protecting them from environment factors , it is useful in keeping the moisture intact inside the plants.

Among the different outer covering , Bark ,stamen , spines and fuzzy hairs

Bark , stamen and fuzzy hairs are all the outer covering of plants

Stamen is not an outer covering its the reproductive organ of the plants.

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the density is 2.6 g/mL

Explanation:

you divide 24.31 by 9.35 and end up with 2.6111707841, just round it off to 2.6

The density is 2.6 g/mL of granite.

Density is defined as the mass per unit volume it means that mass present in 1 meter cube is called density. The S.I unit of density is kg/m^3 and in C.G.S it is gram/cm^3.

So In above statement we can understand that density, mass, and volume all are convert to each other it means that if we know any two variable then third one will be calculated easily.

Mathematically,

Formula for density will be as mentioned below:-

Density = Mass/Volume.

From above formula we can calculate mass which is as follows:-

Mass = Volume × Density.

S.I unit of mass is kilograms and C.G.S unit is gram.

And similarly we can calculate the volume which is equal to as follows:-

Volume = mass / density.

S.I unit of volume is meter cube and C.G.S unit is cubic centimeter. Density is defined as the mass per unit volume it means that mass present in 1 meter cube is called density.

From above formula we can calculate mass which is as follows:-

Mass = Volume × Density.

S.I unit of mass is kilograms and C.G.S unit is gram.

Therefore, The density is 2.6 g/mL of granite.

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Answer:

I think a small spark can start a huge explosion because, a spark or a small firework for an example, can start a fire. You don’t want to have a spark or sparkler lit in your house. This is why I think that it could start a fire.

Explanation:

reasoning

My reason is that if you have a lighter, and you lite the sparkler or spark, you will definitely see a flame glowing at the top. One reason for why you need to lite things that could start fires outside is, that it can be deadly if you accidentally leave one inside or somewhere close to your house or a window. Another piece of evidence is one from a movie. This scenario is kind of like the one in a dogs purpose. A dog’s purpose is about how a dog begins there life as a puppy, they eventually end up having to be saved again by their owner but that’s the summary for just the small unimportant parts. But the real reason for why I’m comparing the question to this is because, in the movie, the rising action, is kind of when the dog, gets put to sleep. But after it goes on all different types of adventures both dangerous, boring at times, and then mood changing I think the story is similar to the question because, a adult sets a fire on the house and the owner of the dog and the owners mom have to get out with there dog. The owner that’s a boy or adult boy, has to jump out the window after saving his dog and this is how a small spark can make a huge impact or life changing lesson.

All of the above are true as regards carbon bonds in organic compounds and is denoted as option 5.

These are chemical compounds which contain carbon-hydrogen or carbon-carbon bonds. Carbon has four valence electrons which makes it tetravalent and able to form multiple bonds.

They can form multiple bonds and branched chains in hydrocarbons such as alkanes, alkenes and alkynes during reactions.

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Answer:B

Explanation:

The mass of [tex]Na_2CO_3[/tex] that will be required to be dissolved in water would be 15.9 grams

Recall that:  molarity = mole/volume in L

In this case, the volume is 0.3 L and the molarity is 0.5 M.

Thus, mole = molarity x volume = 0.5 x 0.3 = 0.15 moles

Mass of 0.15 moles  [tex]Na_2CO_3[/tex] = 0.15 x 106 = 15.9 grams

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Answer: How much heat it takes to raise the temperature

Specific heat describes how much heat a substance takes to raise the temperature. Hence, Option (c) is correct

Specific heat capacity is the amount of heat energy required to raise the temperature of a substance per unit of mass.

The specific heat capacity of a material is a physical property.

It is also an example of an extensive property since its value is proportional to the size of the system being examined.

Specific heat describes how much heat a substance takes to raise the temperature. Hence, Option (c) is correct

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The enthalpy change for the formation step of this intermediate is 136 kJ/mol.

The enthalpy of reaction can be obtained from the enthalpies of formation of the species involved. The enthalpy of reaction is the heat evolved or absorbed in a reaction.

Thus, the enthalpy change for the formation step of this intermediate is 4 *  34 kJ/mol = 136 kJ/mol.

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The compound which on combustion produces Carbon-di-oxide and water is carbohydrates.

Those reaction in which the Crabon present in the reatctant gets reacted with oxygen and produces Carbon-di-oxide.

It is an Exothermic Reaction.

To find out the percentage of C, H and O, we must know about there weight in the product.

Given,

Total weight of compund [Reactant] = 17.41 grams

Weight of carbon dioxide [Product] = 25.61 grams

Weight of water [Product]= 10.48 grams

Now, we need to find out the weight of C,H and O in the products ;

No. of Moles of Crabon =   [tex]\frac{Given \\ weight\\ of\\ the\\ compound}{Molecular\\ weight\\ of\\ the compound}[/tex] x No. of C-atoms in molecule                          

No. of Moles of Crabon =25.61 / 44 = 0.58 x 1 = 0.58 moles

Mass of Carbon = 0.58 moles x 12 = 6.98 gm

No. of Moles of Hydrogen =   [tex]\frac{Given \\ weight\\ of\\ the\\ compound}{Molecular\\ weight\\ of\\ the compound}[/tex] x No. of H-atoms in molecule                          

No. of Moles of Hydrogen =10.48/ 18 = 0.58 x 2 = 1.16 moles

Mass of Hydrogen = 1.16 moles x 12 = 15.08 gm

                                       =   17.41 grams - ( 15.08 gm + 6.98 gm)
Mass of Oxygen  = 4.6 gm

Now,

Percentage of atom =  [tex]\frac{Mass \\ of \\ Atom}{Total\\ weight \\ of\\ compound}[/tex]   x 100

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