1. Write the structural formulas and give IUPAC names for all isorneric alcohols of molecular formula
С4Н9OH​

Answer:

The reaction of ethyl acetoacetate with 1,3-Dibromopropane and 2 moles of Sodium Ethoxide in Ethanol.

Explanation:

The structure of ethyl acetoacetate is shown below:

The structure of 1,3-dibromopropane is shown below:

Ethyl acetoacetate on reaction with sodium ethoxide in ethanol forms a carbanion intermediate and the formation of carbanion takes place twice and form a cyclic ring.

The entire reaction is shown below:

The structure of C9H14O3 is shown in the chemical reaction that is shown below:

Answer:

D

Explanation:

because alkanes don't dissolve in water. They are insoluble.

Answer:

The molarity of the acetic acid in this vinegar is 0.853 M

Explanation:

Step 1: Data given

Volume of vinegar sample = 10.00 mL

Concentration of NaOH = 0.5052 M

16.88 mL are required to neutralize the acetic acid

Step 2: The reaction

HC2H3O2(aq) + NaOH(aq) ⇔ NaC2H3O2(aq) + H2O(l)

Step 3: Calculate molarity of cetic acid (HC2H3O2)

C1*V1 = C2*V2

⇒with C1 = the molarity ofHC2H3O2= TO BE DETERMINED

⇒with V1 = the volume of HC2H3O2 = 10.00 mL = 0.01 L

⇒with C2 = the molarity of NaOH = 0.5052 M

⇒with V2 = the volume of NaOH = 16.88 mL = 0.01688L

C1 = (C2*V2)V1

C1 = (0.5052 * 0.01688 ) / 0.01

C1 = 0.853 M

The molarity of the acetic acid in this vinegar is 0.853 M

Given :

The distance between a point charge and a neutral atom and is multiplied by a factor of 5.

To Find :

By what factor does the force on the neutral atom by the point charge change.

Solution :

We know, electrostatic force between two object is directly proportional to product of charge and inversely proportional to distance between them.

Now, charge in neutral atom is 0 C.

So, the electrostatic force between two of them is also 0 N.

Therefore, by changing distance between the charge the forces did no change ( it remains zero).

Answer:

Hydrogen Bonds

Explanation:

Opposite charges attract one another. The slight positive charges on the hydrogen atoms in a water molecule attract the slight negative charges on the oxygen atoms of other water molecules. This tiny force of attraction is called a hydrogen bond.

Answer:

I hope you understand please follow me please

Answer:

=  0.238 L

Explanation:

From the given information:

To convert cm³ to L(liter), we utilize the advent of a unit fraction that comprises a liter in the upper part of the fraction(numerator) and a cubic centimeter in the lower part of the fraction(denominator)

Recall that:

1000 cm³ = 1 liter

∴

238.0 cm³ = [tex]\dfrac{238.0 \ cm^3}{1} \times \dfrac{1 \ L}{1000 \ cm^3}[/tex]

=  0.238 L

Explanation:

pls the question is not clear to me

Answer:

Write the empirical formula of at least four binary ionic compounds that could be formed from the following ions: Ca^2 , Al^3 ,I^-,S^2-

Explanation:

1)Formula of calcium iodide:

The compound of Ca^2+ and I^-1:

[tex]CaI_2[/tex]

2) Formula of calcium sulfide:

[tex]CaS[/tex]

3) Formula of aluminum iodide:

[tex]AlI_3[/tex]

4) Formul aluminum sulfide:

[tex]Al_2S_3[/tex]

These are the four ionic compounds that are formed.

Answer:

See Explanation

Explanation:

From the parameters given here in this question;

n= 1.46 moles

P= 0.982 miles

T= 13°C + 273 = 286 K

R= 0.0821 L.atm/mol.K

We are to find the volume using the ideal gas equation which states that;

PV=nRT

V= nRT/P

V= 1.46 × 0.0821 × 286/0.982

V= 34.9 L

b) Boyle's law can be proven from the kinetic theory of gases. Boyle's law states the relationship between the volume and pressure of an ideal gas. Boyle's law states that the pressure of a given mass of ideal gas is inversely proportional to it's volume at constant temperature and pressure. This is the only correct statement among the options listed in the question.

The oxidation state of P in [tex]Ca_3(PO_4)_2[/tex] is +5. In the compound [tex]Ca_3(PO_4)_2[/tex], there are 3 Ca ions, each with an oxidation state of +2, and 2 [tex]PO_4[/tex] ions. The correct answer is option C.

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Answer:

Most of the scientists worldwide do not accept this theory.

Explanation:

Lamarck's theory states that acquired traits can be passed on from parents to offspring. This theory can not be sufficiently substantiated by indisputable scientific evidences hence it is not accepted by majority of scientists worldwide.

Since science is empirical and the theory is mostly based on vague speculations rather than concrete evidence, it was long rejected by many biologists.

This theory suggests that all life forms will gradually evolve from simple to complex organisms while the simple organisms gradually disappear. This is not the case.

Answer:

Draw and upload the structures

of the following derivatives of

the carboxylic acids:

a. Ethyl 2-hydroxypropanoate

b. Butyl 3,3-dimethyhexanoate

c. N-Ethyl-N-methylbenzamide

d. 2,3-Dibromohexanamide

Explanation:

a.  Ethyl 2-hydroxypropanoate

indicates that the given molecule has -oate suffix that means it has an ester(R-COO-R') functional group.

Prop- indicates that the main carbon chain has three carbon atoms.

Ethyl group at the second position is the substituent.

b. In this molecule has also -oate functional group which means it has an ester functional group.

The rootword hex-indicates that the main carbon chain has six carbons.

Butyl-3,3-dimethyl group is the substituent.

c. N-ethyl-N-methylbenzamide

In this molecule, the aimde group indicates the presence of -CONH2 group.

N-methyl group prefix indicates that the methyl group is attached to N-atom.

N-ethyl prefix indicates the presence of ethyl group to N-atom.

d. 2,3-dibromohexanamide indicates the presence of amide functional group and two bromo groups as substituents at the second and third carbons.

The structures of all the compounds are shown below:

Answer: The structures of all the acid derivatives are attached below.

Explanation:

Some of the acid derivatives are:

To name a compound, first look for the longest possible carbon chain.

Amide group is a type of functional group where an amine group is attached to a carbonyl group. The general formula of amide is [tex]R-CO-NH_2[/tex], where R is an alkyl or aryl group.

Esters are a kind of organic molecules having functional groups, where R and R' are the alkyl or aryl groups. They are formed by the combination of alcohol and carboxylic acid.

These functional group compounds are named in two words which is alkyl alkanoates, where alkyl refers to the alcoholic part and alkanoate refers to the carboxylic acid part of the molecule. The numbering of the parent chain in esters is done from the carboxylic carbon. The alkyl part is not given any numbers.

For (a): Ethyl 2-hydroxypropanoate

The longest possible carbon chain has 3 carbon atoms and prefix used will be 'prop-'.

A hydroxy (-OH) group is attached to the 2nd position.

The structure is attached in the image below.

For (b): Butyl 3,3-dimethyhexanoate

The longest possible carbon chain has 6 carbon atoms and prefix used will be 'hex-'.

2 methyl groups are attached at the 3rd position

The structure is attached in the image below.

For (c): N-Ethyl-N-methylbenzamide

The longest possible carbon chain is a benzene ring

1 methyl and 1 ethyl groups are attached directly to the N-atom

The structure is attached in the image below.

For (d): 2,3-Dibromohexanamide

The longest possible carbon chain has 6 carbon atoms and prefix used will be 'hex-'.

2 bromo groups are attached at the 2nd and 3rd position

The structure is attached in the image below.

Answer:

Therefore, Pnitrogen=97.5kpa

Explanation:

100.0-2.49

=97.5

435= i don't know

Answer:

37.09 g of B₅H₉ is required to form 148 g of  borate salt( Na₂B₄O₇  )

Explanation:

Given the data in the question;

B₅H₉ → H₃BO₃ → Na₂B₄O₇

find the mass (in grams) of B5H9 required to form 148 g of the borate salt by this reaction sequence.

S                                M.W

B₅H₉                          63

H₃BO₃                       62

Na₂B₄O₇                   201

So, moles of Na₂B₄O₇  = 148 / 201 = 0.736

Since Boron will be conserved,

Moles of Boron atoms in Na₂B₄O₇  will be;

⇒ 4 × 0.736 = 2.944

Now, Moles of Boron in Na₂B₄O₇ = Moles of Boron in H₃BO₃ = Moles of Boron in B₅H₉  

Hence,

Moles of Boron in B₅H₉ = 2.944

Moles of B₅H₉ = 2.944 / 5 = 0.5888

Mass of B₅H₉ = 0.5888 × 63 = 37.09 g

Therefore, 37.09 g of B₅H₉ is required to form 148 g of  borate salt( Na₂B₄O₇  )

Given :

If a certain gas occupies a volume of 12 LL when the applied pressure is 6.0 atm.

To Find :

The pressure when the gas occupies a volume of 3.0 LL .

Solution :

Since, their is no information of temperature, let us assume it is constant throughout the process.

We know, by ideal gas equation  at constant temperature :

[tex]\alpha P_1V_1 = P_2V_2\\\\6 \times 12 = P_2 \times 3\\\\P_2 = 24\ atm[/tex]

Therefore, the pressure when the gas occupies a volume of 3.0 LL is 24 atm.

Answer:

Number 2 is the balanced equation

Explanation:

There is

4 Na on both sides

2 O on both sides

4Na + O2 -2Na2O is a balanced equation.

An equation for a chemical reaction is said to be balanced if both the reactants and the products have the same number of atoms and total charge for each component of the reaction.

The law of conservation of mass states that when a chemical reaction takes place, the mass of the reactants and products should be equal.

The chemical equation that depicts the chemical reaction must be balanced as a result. When the total number of atoms in the reactants and products sides of a chemical equation equals one, the equation is said to be balanced.

An unbalanced chemical equation lists the reactants and products in a chemical reaction but doesn't state the amounts required to satisfy the conservation of mass.

Therefore, 4Na + O2 -2Na2O is a balanced equation.

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Answer:

When heated, the molecules of the liquid in the thermometer move faster, causing them to get a little further apart. This results in movement up the thermometer. When cooled, the molecules of the liquid in the thermometer move slower, causing them to get a little closer together.

Explanation:

I hope it can help

An increase in temperature indicates the molecules in the liquid are moving faster and the temperature is rising in the thermometer.

Mercury thermometer are useful in measuring body , liquid and vapor temperature.

Mercury is used in the thermometer , The movement of the liquid in a thermometer shows changes in temperature.

The volume expansion coefficient of Mercury is very high and so by 1 degree rise in temperature there is 0.018 % increase in volume.

An increase in temperature indicates the molecules in the liquid are moving faster and the temperature is rising in the thermometer.

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Answer:

0.012288122055459

Explanation:

i might be wrong

Answer:

mass = moles x molar mass

m= 3.7 x (23x2+16)

m= 3.7x62

m= 229.4g

198.4 grams are there is 3.7 moles of Na₂O.

The number of moles is defined as the ratio between given mass and molar mass.

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}\\\\[/tex]

Given:

Number of moles= 3.7 moles

To find:

Mass=?

Molar mass of Na₂O= 62 g/mol

Thus substituting the values in the given formula

[tex]\text{Given mass}=\text{Number of moles}*\text{Molar mass}\\\\\text{Given mass}= 3.2 \text{moles}*62 \text{g/mol}\\\\\text{Given mass}=198.4 \text{g}[/tex]

Thus, 198.4 grams are there is 3.7 moles of Na₂O.

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Answer: 1.5 moles of [tex]Pb(OH)_2[/tex] are produced.

Explanation:

We are given:

Moles of sodium hydroxide = 3.50 moles

The given chemical equation follows:

[tex]Pb(NO_3)_2(aq)+2NaOH(aq)\rightarrow Pb(OH)_2(s)+2NaNO_3(aq)[/tex]

By stoichiometry of the reaction:

If 2 moles of NaOH produces 1 mole of [tex]Pb(OH)_2[/tex]

So, 3 moles of NaOH will produce = [tex]\frac{1}{2}\times 3=1.5mol[/tex] of [tex]Pb(OH)_2[/tex]

Hence, 1.5 moles of [tex]Pb(OH)_2[/tex] are produced.

Answer: The given transition metal ions in order of decreasing number of unpaired electrons are as follows.

[tex]Mn^{4+} > V^{3+} = Ni^{2+} > Fe^{3+} > Cu^{+}[/tex]

Explanation:

In atomic orbitals, the distribution of electrons of an atom is called electronic configuration.

The electronic configuration in terms of noble gases for the given elements are as follows.

[tex]Fe^{3+} - [Ar] 3d^{5}[/tex]

So, there is only 1 unpaired electron present in [tex]Fe^{3+}[/tex].

[tex]Mn^{4+} - [Ar]3d^{3}[/tex]

So, there are only 3 unpaired electrons present in [tex]Mn^{4+}[/tex].

[tex]V^{3+} - [Ar] 3d^{2}[/tex]

So, there are only 2 unpaired electrons present in [tex]V^{3+}[/tex].

[tex]Ni^{2+} - [Ar] 3d^{8}[/tex]

So, there will be 2 unpaired electrons present in [tex]Ni^{2+}[/tex].

[tex]Cu^{+} - [Ar] 3d^{10}[/tex]

So, there is no unpaired electron present in [tex]Cu^{+}[/tex].

Therefore, given transition metal ions in order of decreasing number of unpaired electrons are as follows.

[tex]Mn^{4+} > V^{3+} = Ni^{2+} > Fe^{3+} > Cu^{+}[/tex]

Thus, we can conclude that given transition metal ions in order of decreasing number of unpaired electrons are as follows.

[tex]Mn^{4+} > V^{3+} = Ni^{2+} > Fe^{3+} > Cu^{+}[/tex]

Answer:

There are about 68.33 grams of oxygen present in 93.98 g of CO2.

Solution :

Given :

Amount of anserine solution = 0.200 M

pH value is = 7.20

Preparation of 0.04 M solution of anserine from the 0.2 M solution.

0.2 M x [tex]x[/tex] = 0.04 M x 1000 ml

[tex]x[/tex] = 200 ml

So the 200 ml of 0.2 M anserine solution is required to prepare0.04 M of anserine.

0.1 M x [tex]x[/tex] = 0.04 x 1000 ml

[tex]x[/tex] = 400 ml

Therefore, 400 ml of HCl is needed.

Answer:

1.17 mol

Explanation:

Step 1: Write the balanced equation

2 Al + 6 HCl → 2 AlCl₃ + 3 H₂

Step 2: Calculate the moles corresponding to 85.0 g of HCl

The molar mass of HCl is 36.46 g/mol.

85.0 g × 1 mol/36.46 g = 2.33 mol

Step 3: Calculate the number of moles of H₂ produced from 2.33 moles of HCl

The molar ratio of HCl to H₂ is 6:3.

2.33 mol HCl × 3 mol H₂/6 mol H₂ = 1.17 mol H₂

Answer:

no

Explanation:

Answer:

See explanation and image attached

Explanation:

Fischer esterification is a type of reaction used  to convert carboxylic acids to ester in the presence of excess alcohol and a strong acid which acts as a catalyst. Another final product formed in the reaction is water.

The mechanism for the fischer esterification of Benzoic acid and  C H 3 O H in the presence of HCl as the catalyst is shown in the image attached to this answer.

The final products of the reaction are methyl benzoate, water and H^+ as shown in the image attached.

The methyl ester, water, and the acid catalyst (HCl) are byproducts of the Fischer esterification process, which involves protonation, nucleophilic attack, elimination, and deprotonation processes.

Carbonyl oxygen protonation: The carbonyl oxygen of the carboxylic acid (benzoic acid) is protonated by the acid catalyst (HCl) in the first step. The protonation of the carbonyl carbon increases its electrophilicity and promotes the alcohol's nucleophilic assault. Attack by the alcohol's nucleophilic oxygen (methanol, CH3OH) on the protonated carboxylic acid's carbonyl carbon results in the formation of a tetrahedral intermediate. The acid catalyst also helps with this phase. Elimination of water: In the following step, the water molecule must be removed from the tetrahedral intermediate. The hydroxyl group (-OH) from the carboxylic acid and a hydrogen from the hydroxyl group of the alcohol are removed to create this water molecule. Deprotonation: A deprotonation occurs after the removal of water.

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