can some one help whith these

Between OH and C=O, the strong nucleophile is OH and the strong electrophile is C=O.

1. OH (hydroxide ion) is a strong nucleophile because it has a negative charge on the oxygen atom, which allows it to donate its lone pair of electrons to an electrophilic center.
2. C=O (carbonyl group) is a strong electrophile because the carbon atom has a partial positive charge due to the electronegativity difference between carbon and oxygen atoms in the double bond. This makes the carbon atom highly susceptible to nucleophilic attack.

To know more about Nucleophiles and Electrophiles:

https://brainly.com/question/27127109

#SPJ11

The dissociation equation of KOH is,  KOH(aq)⟶K^+(aq) + OH^-(aq)

In chemistry, the term "dissociation" implies that something is being broken up into its constituents.

An electrolyte is an substance whose solution is composed of ions hence it conducts electricity in solution. Electrolytes are ionic substances.

For the electrolyte, KOH, it dissociates as follows;

KOH(aq)⟶ K^+(aq) + OH^-(aq)

Learn more: https://brainly.com/question/1033537

Answer:

No.

Explanation:

Weight is the measure of the gravitational force between two massive things.

W = g . m

g = gravity

m = mass

Also, we can say that gravity is equal to G.M/d² where G is the constant of Newton's gravity, M the massa of the corp and d is their distance.

In Einstein's theory, that's not true, but it works for small gravitys.

The description of the question is the definition of density.

Coefficients and Subscripts The numbers in front of the molecule are called coefficients. Subscripts are the lower numerals that follow atoms.

Equations for balancing. To balance a chemical equation, you cannot modify the subscripts in a chemical formula; only the coefficients can be changed. Changing the subscripts alters the atom ratios of the molecule and hence the chemical characteristics. When balancing an equation, you can only alter the coefficients (the numbers in front of molecules or atoms).

To balance a chemical equation, add coefficients to the symbols or formulae as needed so that the same number of each type of atom appears in both reactants and products.

To learn more about Coefficients and Subscripts to refer:

https://brainly.com/question/12645074

#SPJ4

Answer:

Explanation:

The percentage error of a certain measurement can be found by using the formula

\(P(\%) = \frac{error}{actual \: \: number} \times 100\% \\ \)

From the question

actual volume = 198.2 mL

error = 200 - 198.2 = 1.8

So we have

\(P(\%) = \frac{1.8}{198.2} \times 100 \\ = 0.90817356205...\)

We have the final answer as

Hope this helps you

Answer:

.

Answer: 5 All of the molecules have the same kinetic energy

since the temperature is kept constant at 298 K

Explanation:

The AVERAGE kinetic energy is directly proportional to the absolute temperature.

All the molecules have the same average kinetic energy as average kinetic energy is directly proportional to the absolute temperature. So, the correct option is 5.

The average kinetic energy (K) is equal to one-half of the mass (m) of each gas molecule times the root mean square speed (Vrms) squared.

We know that the average kinetic energy is directly proportional to the absolute temperature.

All of the molecules have the same kinetic energy since the temperature is kept constant at 298 K.

Therefore, All the molecules have the same average kinetic energy as average kinetic energy is directly proportional to the absolute temperature.

To learn more about average kinetic energy, click here:

https://brainly.com/question/24134093

Answer: It can affect the shape of sediment because it is scraping very slowly against it causing it to change,

Explanation:

Potassium chloride (KCl) has a molar mass of 74.55 g/mol. Its mass can be calculated by multiplying the number of moles of KCl by its molar mass or by using a balance to directly measure its mass in grams.

To solve this problem, we need to use the formula:

mass = concentration x volume x molar mass

First, let's convert the given volume of 350 mL to liters by dividing by 1000:

350 mL ÷ 1000 mL/L = 0.350 L

The molar mass of KCl is 74.55 g/mol.

Now we can substitute the given values into the formula:

mass = 0.24 mol/L x 0.350 L x 74.55 g/mol

mass = 6.3 g

Therefore, the mass of KCl in 350 mL of 0.24 M KCl is 6.3 g. The answer is (e).

To know more about mass of KCl click this link -

brainly.com/question/9418363

#SPJ11

Answer:

They hatch into larvae.

Explanation:

Answer:

Testable questions can be answered through investigations that involve experiments, observations, or surveys. Testable questions are answered by collecting and analyzing evidence that is measurable. Testable questions relate to scientific ideas rather than personal preference or moral values.

Explanation:

hope this helps

Answer: a vascular plant and have seeds

Answer:

A  and C

Explanation:

A lot of acids have two or more ionizable hydrogens. In phosphoric acid H3PO4, there are three, and there are two in carbonic acid H2CO3.

A substance that can contribute more than one proton is called polyprotic acid. Two different types of polyprotic acid—diprotic and triprotic—can each donate two or three protons.

Polyprotic acids have different dissociation constants, such as Ka1, Ka2, Ka3, and equivalence points, depending on how frequently dissociation occurs.

Take sulfuric acid as an example of a diprotic polyprotic acid (H2SO4). The sequential deprotonation of sulfuric acid (H2SO4) results in the production of HSO4- and SO42-, respectively.

Take sulfuric acid as an example of a diprotic polyprotic acid (H2SO3). To create HSO3-, sulfuric acid (H2SO3) is sequentially deprotonated.

To know more about polyprotic acids  visit:-

https://brainly.com/question/28605275

#SPJ4

Answer:

A

Explanation:

The sun is the smallest object in our solar system

Answer:

A. the sun is the smallest object in our solar system

Explanation:

In 2009, the Hubble Space Telescope discovered the smallest object ever seen in visible light at the time within the Kuiper Belt. The Kuiper Belt Object (KBO) found was a mere 3,200 feet (975 meters) across and was 4.2 billion miles away.

Answer:

digstive system

Explanation:

Answer:

Small streams that flow into larger streams and wetlands

Explanation:

Hope this helps, have a great day (;

Answer:

D

Explanation:

verifyed got me the answer!

Total, 18.765 grams of hydrogen gas are needed to produce 12.51 grams of NH₃.

To determine the amount of H₂ needed to produce a given mass of NH₃, we need to use the balanced chemical equation for the reaction between H₂ and NH₃. The balanced equation is:

3H₂ + N₂ → 2NH₃

From the equation, we can see that 3 moles of H₂ react to form 2 moles of NH₃.

Now, we need to calculate the molar masses of H₂ and NH₃;

The molar mass of H₂ is 2 g/mol (1 g/mol for each hydrogen atom).

The molar mass of NH₃ is approximately 17 g/mol (1 g/mol for each hydrogen atom and 14 g/mol for nitrogen).

To find the amount of H₂ needed, we can set up a proportion using the molar ratios from the balanced equation:

(3 mol H₂ / 2 mol NH₃) = (x g H₂ / 12.51 g NH₃)

Cross-multiplying and solving for x (the mass of H₂), we get:

x = (3 mol H₂ / 2 mol NH₃) × (12.51 g NH₃)

x ≈ 18.765 g H₂

Therefore, approximately 18.765 grams of H₂ are needed to produce 12.51 grams of NH₃.

To know more about hydrogen gas here

https://brainly.com/question/14355155

#SPJ4

Small airborne particles of solid substances such as grain, flour, sugar, coal, metal, or sawdust are commonly known as dust.

Dust is an accumulation of small particles that are released into the air through various activities such as cutting, grinding, drilling, or blasting. These activities generate a lot of fine dust particles, which can cause respiratory problems when inhaled. The type of dust generated depends on the source material and the nature of the activity. For example, sawdust is generated during woodworking, flour dust is common in bakeries, and coal dust is generated in coal mines.

Dust particles are classified based on their size, with the smallest particles being the most dangerous. Fine dust particles, also known as PM2.5, are small enough to penetrate deep into the lungs and can cause a range of health problems such as asthma, bronchitis, and lung cancer. Long-term exposure to dust can also lead to chronic respiratory diseases. Dust control measures such as ventilation, dust suppression, and personal protective equipment can help reduce the risk of dust exposure in workplaces.

Learn more about bronchitis here :

https://brainly.com/question/31024710

#SPJ11

The number of moles of sodium chloride (NaCl) that can be produced is:

4.5 moles Na * (2 moles NaCl / 2 moles Na) = 4.5 moles NaCl from 4.5 moles of sodium (Na), you can produce 4.5 moles of sodium chloride (NaCl) according to the balanced chemical equation.

The balanced chemical equation shows that 2 moles of sodium (2Na) react with 1 mole of chlorine (Cl₂) to produce 2 moles of sodium chloride (2NaCl). From the given information, we have 4.5 moles of sodium (Na). According to the stoichiometry of the balanced equation, we can determine the number of moles of sodium chloride (NaCl) that can be produced by using a simple mole ratio. Mole ratio of Na to NaCl: 2 moles NaCl / 2 moles Na Therefore, the number of moles of sodium chloride (NaCl) that can be produced is: 4.5 moles Na * (2 moles NaCl / 2 moles Na) = 4.5 moles NaCl Hence, from 4.5 moles of sodium (Na), you can produce 4.5 moles of sodium chloride (NaCl) according to the balanced chemical equation.

For more question on moles

https://brainly.com/question/15356425

#SPJ11

Answer:

A.

It contains three times as many hydrogen atoms as carbon atoms.

B.

It consists of 75% hydrogen by mass.

C.

Each molecule contains exactly four atoms.

D.

Each carbon atom is bonded to three hydrogen atoms.

Explanation:

it has 75% Hydrogen by mass

If we assume CH3 as 100% which is 4 parts.

Then 3 parts corresponds to Hydrogen which is 75% and remains is carbon,25 %

Answer:

Au, C, K, O

Explanation:

Au = Gold

C = Carbon

K = Potassium

O = Oxegen

H20 = Not an element on the periodic table

CO2 = Not an element on the periodic table

NaCl = Not an element on the periodic table

Milk = Not an element on the periodic table

Mud = Not an element on the periodic table

Air = Not an element on the periodic table

Hope this helps! :)

Answer:

the answer is 4=Be 9 =F 16=S 17 = CL

Explanation:

atomic no 4 = beryllium (Be)

" " 9 = fluorine (F)

16 = sulfur (S)

17 = chlorine (CL)

The atomic number of Beryllium is 4, the atomic number of fluorine is 9,  atomic number of sulfur is 16 and the atomic number of chlorine is 17.

The atomic number is defined as the number of protons in the nucleus of an atom or the number of electrons revolving around the nucleus in orbits or shell.

So we can conclude that he atomic number of Beryllium is 4, the atomic number of fluorine is 9,  atomic number of sulfur is 16 and the atomic number of chlorine is 17.

Learn more about atom here: https://brainly.com/question/6258301#SPJ2

Answer:

3

Explanation:

pH+pOH=14

Answer:

The answer is option A.

Distilled water

Since all the chemicals that will cause hardness in the water has been removed.

Hope this helps.

Answer:

1.VOLUME– The amount of space an object takes up. Basic Unit (SI Unit) for Solids – Cubic Meter, m3. LENGTH/DISTANCE – The measurement between two points.

2.one particle per cubic meter.

3.it means it is heavier

4.In a liquid the particles are still close together but a little further apart than in a solid.

5.In gases the particles are much further apart than in solids or liquids.

Explanation:

thats all i can type lol

⁹⁴Pu₂₄₄-------> ⁹⁵Am₂₄₃ + electron is a nuclear equation for plutonium emitting gamma radiation

Alpha particles plutonium is created in an activator when uranium atoms absorb neutrons. Nearly all plutonium is man-made. Plutonium mainly emits alpha particle is a type of radiation that is easily ceased and has a short range. It also emits neutrons, beta particles, and gamma rays. It also emits neutrons, beta particles, and gamma rays.

It is contemplated toxic, in part, because if it were to be inhaled it could deposit in the lungs and finally cause damage. There are five common isotopes of plutonium because it emits alpha particles, plutonium is most menacing when inhaled.

So we can conclude that Plutonium isotopes emit alpha rays except for plutonium-241 for which the energy of beta electrons is curiously low.

Learn more about Plutonium here: https://brainly.com/question/15186972

#SPJ1

The reaction you're describing is a halogenation reaction where an unsymmetrical alkene reacts with a halogen (X2) and water (H2O) to form a halohydrin. The general reaction can be represented as follows:

Asymmetrical alkene + X2 + H2O → Halohydrin

For example, let's consider the reaction between propene (an asymmetrical alkene) and chlorine gas (Cl2) in the presence of water (H2O):

CH3CH=CH2 + Cl2 + H2O → CH3CH(Cl)CH2OH

In this reaction, the double bond of propene is broken and a chlorine atom is added to one carbon atom, while a hydroxyl group (-OH) is added to the other carbon atom.

This forms a halohydrin, which in this case is 2-chloropropanol. The reaction mechanism involves the formation of a cyclic intermediate called a halonium ion, which is then attacked by water to form the halohydrin.

Note that the halogenation of an unsymmetrical alkene can lead to the formation of different products, depending on the regioselectivity of the reaction. In the example above, the reaction is regioselective because the chlorine atom is added to the less-substituted carbon atom of the alkene.

learn more about halogenation here:

https://brainly.com/question/31033378?utm_source=android&utm_medium=share&utm_campaign=question

#SPJ11

During the preparatory phase of glycolysis, glucose undergoes a series of reactions to form two molecules of glyceraldehyde-3-phosphate. The key steps involved in the preparatory phase of glycolysis are Phosphorylation, Isomerization, Second Phosphorylation, and Cleavage.

The products formed in each step are: Glucose-6-phosphate, Fructose-6-phosphate, Fructose-1,6-bisphosphate

Two molecules of glyceraldehyde-3-phosphate (G3P)

Phosphorylation: Glucose is phosphorylated by ATP to form glucose-6-phosphate, catalyzed by the enzyme hexokinase.

Isomerization: Glucose-6-phosphate is converted to fructose-6-phosphate by the enzyme phosphoglucose isomerase.

Second Phosphorylation: Fructose-6-phosphate is phosphorylated by ATP to form fructose-1,6-bisphosphate, catalyzed by the enzyme phosphofructokinase.

Cleavage: Fructose-1,6-bisphosphate is cleaved into two molecules of glyceraldehyde-3-phosphate (G3P) by the enzyme aldolase.

To know more about Phosphorylation, here

brainly.com/question/29104155

#SPJ4

--The complete Question is, During the preparatory phase of glycolysis, glucose undergoes a series of reactions to form two molecules of glyceraldehyde-3-phosphate. What are the key steps involved in the preparatory phase of glycolysis, and what are the products formed in each step?--

In order to calculate the average bond energy of the O−H bond, we need to consider the energy changes involved in breaking the bonds in H2 and O2 and the energy change in forming the bonds in H2O.

The reaction involves breaking two H−H bonds and one O=O bond in the reactants, and forming four O−H bonds in the product. The energy change (ΔH) for the reaction is -571 kJ. Given that the bond energy of H−H is 435 kJ and the bond energy of O=O is 498 kJ, we can calculate the total energy change in breaking the bonds in the reactants:

Energy change = 2 × (bond energy of H−H) + (bond energy of O=O)

                 = 2 × 435 kJ + 498 kJ

                 = 1368 kJ

Since the reaction is exothermic (ΔH < 0), the energy released in forming the bonds in the products will be equal to the magnitude of the energy change: Energy change in forming bonds = 571 kJ Now, we can calculate the average bond energy of the O−H bond:

Average bond energy of O−H = (Energy change in forming bonds) / (Number of O−H bonds formed)

                                         = 571 kJ / 4

                                          ≈ 142.75 kJ

Therefore, the average bond energy of the O−H bond is approximately 142.75 kJ.

Learn more about reaction here: brainly.com/question/15736742

#SPJ11

Based on the assertion and reasons given, it can be seen that the Assertion is true, but the reason is false.

Camphor and ammonium chloride are not separated because they are volatile substances. Hence assertion is true.

Camphor on heating sublimes, only when mixed with sodium chloride so the reason is false.

The bark and wood of the camphor tree were once used to make the chemical known as camphor.

Today, turpentine oil is typically used to make camphor. The fragrance of camphor is quite distinctive. It helps with symptoms like pain and itching by stimulating the nerves, it seems.

Read more about camphor here:

https://brainly.com/question/15149136
#SPJ1