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Answer:

(J) All organisms are composed of cells

Answer:

Benzene shows that it is actually unsaturated because it adds hydrogen or chlorine, although only when allowed to react under very vigorous conditions (higher temperature or pressure) compared to those required for alkenes and alkynes.

Explanation:

Answer:

[tex]\dfrac{1}{40}[/tex]

Explanation:

To find [tex]\dfrac{\sqrt{625}}{1000}[/tex], then we have to solve the square root  "625".

A square root is regarded as a factor that occurred from a number, that is when such a number is being multiplied by itself, it gives the actual number.

SO;

[tex]\dfrac{\sqrt{625}}{1000} \\ \\ = \dfrac{25}{1000} \\ \\ = \dfrac{5}{200} \\ \\ \mathbf{= \dfrac{1}{40}}[/tex]

Answer:

The reaction between amines and carboxylic acids to form amides is biologically important. It is through this reaction that amino acids (molecules containing both amine and carboxylic acid substituents) link together in a polymer to form proteins.

Answer:

Carbonyl Groups

Explanation:

Electron-withdrawing substituents stabilize the carbon atoms in its surrounding. These chemical groups are Carbonyl groups  which withdraw electrons because of the inductive effect and presence of double bond between C and O and also because of the polarity of the two atoms (Carbon and oxygen)

Answer:

the answer is like same we do last I know the answer I will help you to get more questionable and paste it to you do you know what time you do it me william and paste Now bro hurry up please and then let's go play with me again Go to bed ️ I don't know what to do patch right Now or just a question for you to get more questionable

Answer:

316.227766

Explanation:

Answer:

Isotopes

Explanation:

iso means the same like in triangles (isosceles) so the atoms are the same element but different in mass. Since the isotopes have the same number of protons and electrons the isotopes have much the same chemical behavior. Since the isotopes have different numbers of neutrons the nuclear behavior differs.

Answer:

KCI is rhe solute in a homogeneous mixture

Answer:

1. KCI is the solute in a homogeneous mixture.

Explanation:

Answer:

[H⁺] = 6.17×10¯⁶ M

Explanation:

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

pH = 5.21

Concentration of Hydrogen ion [H⁺] =?

The pH of a solution is defined by the following equation:

pH = –Log [H⁺]

With the above formula, we can obtain the concentration of Hydrogen ion [H⁺] in the solution as follow:

pH = –Log [H⁺]

5.21 = –Log [H⁺]

Divide both side by –1

–5.21 = Log [H⁺]

Take the antilog of –5.21

[H⁺] = Antilog (–5.21)

[H⁺] = 6.17×10¯⁶ M

Therefore, the concentration of Hydrogen ion [H⁺] in the solution is 6.17×10¯⁶ M

Answer:

2.09 atm

Explanation:

Step 1: Given and required data

We won't need the data of water and uncombusted fuel, since the partial pressures are independent of each other.

Step 2: Calculate the number of moles (n) corresponding to 60.0 g of CO₂

The molar mass of CO₂ is 44.01 g/mol.

60.0 g × 1 mol/44.01 g = 1.36 mol

Step 3: Calculate the partial pressure of CO₂

We will use the ideal gas equation.

P × V = n × R × T

P = n × R × T/ V

P = 1.36 mol × (0.0821 atm.L/mol.K) × 468.2 K/ 25.0 L = 2.09 atm

The partial pressure of [tex]\rm CO_2[/tex] in 25 L fuel combustion vessel has been 2.09 atm.

From the ideal gas equation:

PV =nRT

P= partial pressure

V = volume = 25 L

n = moles of carbon dioxide

Moles = [tex]\rm \dfrac{weight}{molecular\;weight}[/tex]

Moles of [tex]\rm CO_2[/tex] = [tex]\rm \dfrac{60}{44}[/tex] mol

Moles of [tex]\rm CO_2[/tex] = 1.36 mol

R = constant = 0.0821 atm.L/mol.K

T = temperature in Kelvin =  468.2 K

Partial pressure of [tex]\rm CO_2[/tex] = [tex]\rm \dfrac{1.36\;\times\0.0821\;\times\;468.2}{25}[/tex]

Partial pressure of [tex]\rm CO_2[/tex] = 2.09 atm.

The partial pressure of [tex]\rm CO_2[/tex] in 25 L fuel combustion vessel has been 2.09 atm.

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Answer:

I dont know

Explanation:

good luck

Explanation: Reciprocal regulation is intended to prevent concurrent activity in two closely parallel pathways, as represented by gluconeogenesis and glycolysis. These pathways include potential futile cycles, which would simply waste ATP if allowed to run freely.

The element that can show an expanded octet in the list is Br.

Bromine has an electron configuration of [Ar] 3d¹⁰ 4s² 4p⁵. This means that still has accessible 4d  orbitals to which electrons can be filled. This is the reason why it is able to expand its octet.

Recall that any element that has accessible higher energy orbitals to which electrons can be filled can easily expand its octet. Generally, first and second period elements do not expand their octet.

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Answer: C3H8 + 5O2 = 3Co2 +4H2O

Explanation: Equations must be balanced

You must have the same amount of C

H and O on both sides of the equation

Answer:

An atom with one or two valence electrons more than a closed shell The number of valence electrons of an element can be determined Groups 3-12 (transition metals), 2* (The 4s shell is complete and cannot hold any more electrons)  in explaining the molecular structure of many organic compounds.

Explanation:

Answer:

It is B Condensation

Explanation:

Condensation reaction is one of which involves addition which immediately followed by elimination of small molecules such as water and ammonia

The condensation reactions are also called the dehydration synthesis. Because these type of reactions loss water molecule or other molecules like ammonia, ethanol, etc. can also be lost. Here the given reaction is a condensation. The correct option is B.

A condensation reaction is an important reaction of organic chemistry which involves the joining of two molecules to produce a single molecule. This type of reaction generally involves the addition of two molecules by losing a minor molecule like water, hydrogen sulphide, acetic acid etc.

Thus the given reaction is option B.

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Answer:

don't get the question2

Answer:

1280.5g

Explanation:

Answer:

D

Explanation:

P1 x V1 = P2 x V2

7.00(740) = x(2.00)

2590 mm Hg

took me a while because i dont know this, hope its right good luck

Covalent bonding involving covalent bonds is depicted between these two atoms as they form diatomic molecule.

Covalent bond is defined as a type of bond which is formed by the mutual sharing of electrons to form electron pairs between the two atoms.These electron pairs are called as bonding pairs or shared pair of electrons.

Due to the sharing of valence electrons , the atoms are able to achieve a stable electronic configuration . Covalent bonding involves many types of interactions like σ bonding,π bonding ,metal-to-metal bonding ,etc.

Sigma bonds are the strongest covalent bonds while the pi bonds are weaker covalent bonds .Covalent bonds are affected by electronegativities of the atoms present in the molecules.Compounds having covalent bonds have lower melting points as compared to those with ionic bonds.

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Answer:

It will go faster each time because she is stirring therefore the water can get to the salt faster than it just sitting at the top

Explanation:

Answer:

H2O2 reduces itself to H2O and also oxidizes to O2 simultaneously thereby acting both as an oxidizing and reducing agent .

Explanation:

When

H2O2 acts as an oxidizing agent

H2O2 + 2e- 2H+--->   2H2O

Reducing agent

H2O2 --> O2 + 2e + 2H+

H2O2 reduces itself to H2O and also oxidizes to O2 simultaneously thereby acting both as an oxidizing and reducing agent .

50500Nm^2 or 5.05Nm^2

Explanation:

so bring out the parameters

p1= 0.12dm3, T1= 60c , because temperature is in kelvin add 273= 333k, v1= 0.12dm3 , T2= to the same value because the temperature didn't change = 333k, v2= 0.24dm3,P2= ?

general gas equation p1v1 over T1 = P2V2 over T2, when you input everything or make p2 the subject of the formula first you'll get the answer, pressure can have an s.i unit of mmhg but I'm using the same si unit as the question given and always check your units in the question to convert. please if this question has options please check, I don't want you to fail so verify from others if I made a mistake

Answer:

I think it's B. The ability of water molecules to adhere to the surfaces of objects

Answer:

is there supposed to be some type of image or ...

Explanation: