Which compounds exhibit geometric isomerism? Draw and name the two isomers in each case:(b) 2-pentene

Answer:

yes

Explanation:

Answer:

1.KCl is answer

Explanation:

when potassium chloride KCl is dissolved in water,it will dissociate to form k+ and cl- .thus,the solute must be k+Cl- .

I hope it's helpful!

The substance dissolved in a solvent or water is called a solute it makes up the homogenous mixture called solution by getting dissolved in it.

The \(\rm KCl\) is the solute in the aqueous solution of \(\rm KCl\).

Therefore, option A, \(\rm KCl\) is the solute.

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Two possible sources of systematic (determinate) error in the experiment are; Incorrect calibration of volumetric glasswareIncorrect mass of NaCl

To calculate the concentration of NaCl in the resulting solution in mg/L NaCl, we can use the formula; Concentration (mg/L) = (Mass of solute ÷ Volume of solution in L) × 1000 g / 1 mg NaCl is present in the stock solution of 25 mL. So, the mass of NaCl in the solution would be;0.0842 g ÷ 25 mL = 0.00337 g/mL. Now, in the resulting solution, a 1.00 mL aliquot of the stock solution is transferred to a 50.00 mL volumetric flask and diluted to volume. Therefore, the volume of the resulting solution is 50.00 mL. We will substitute these values in the formula, Concentration (mg/L) = (0.00337 g/mL ÷ 50 mL) × 1000 g / 1 mg concentration (mg/L) = 67.4 mg/L. Therefore, the concentration of NaCl in the resulting solution in mg/L NaCl is 67.4 mg/L.7.  Concentration = 67.4 mg/LTolerance = 4.28 mg/LTotal concentration = 67.4 + 4.28 mg/L = 71.68 mg/LWe round off this value to one decimal place; Total concentration = 71.7 mg/LTherefore, the concentration of NaCl in the resulting solution using propagation of error through the calculation is 67.4+0.4 mg/L.8. Two possible sources of random (indeterminate) error in the experiment are; Errors in temperature measurement. Errors in measurement of water volume. Two possible sources of systematic (determinate) error in the experiment are; Incorrect calibration of volumetric glasswareIncorrect mass of NaCl.

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Answer:

The lightest elements in the universe — hydrogen, helium, and a little lithium — were born shortly after the Big Bang.

Explanation:

Iron is the heaviest element produced in large stars by nuclear fusion near the end of their life cycle .

Nuclear fusion is the process by which two light atomic nuclei combine to form a single heavier one while releasing massive amounts of energy.

The main advantage of nuclear fusion is it is safe source for the generation of electricity.

Characteristics of nuclear fusion -:

Hence ,Iron is the heaviest element produced in large stars by nuclear fusion near the end of their life cycle .

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Answer:

1.01x236/1.90

=125.4mL

the si unit for time is second

the si unir for length is meter

the si unit for mass is kilogram

the si unit for temperature is kelvin

1: Time: second 2. Length: meter 3. Mass: kilogram 4. Temperature kelvin are the SI units of measurements.

What do you mean by SI unit of measurements?

It is unit of the standard of reference which is chosen to measure any type of physical quantity.

SI Units of Measurements is the system which stands for the international system of unit.

The SI, uses standard symbols, units and abbreviations, developed by the Bureau International.

The SI unit of mass is the kilogram, length is a meter, time is second, temperature is kelvin, electric current is ampere, amount of substance is mole, luminous intensity is candela.

SI unit has a huge amount of application  universally in both technical and scientific research to avoid the confusion.

This system is important as  it helps the entire world to understand the measurements in one set of unit systems.

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According to the electron sea model, the melting points of metals are not as extreme as the boiling points. Therefore, the given statement is correct is true.

The Electron Sea Model's whole hypothesis relies around the behavior of atoms throughout this bonding. The movement of unpaired electrons between positively charged metal ions in a mesh is known as metallic bonding.

According to the electron sea model, the melting points of metals are not as extreme as the boiling points. This is because the cations and electrons are - in a metal. It does not take much energy for a solid to become liquid. But metallic bonds are very - , so it does require a lot of energy to separate atoms from the cations in their sea of electrons. This statement is true.

Therefore, the given statement is correct is true.

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The change between continuum and slip-flow regimes in atmospheric boundary layer can occur at an altitude of around 10 meters above the surface.

In the atmospheric boundary layer, the change from continuum to slip-flow regime occurs as the height above the surface increases to 10 meters. At this height, the atmospheric boundary layer is still considered to be in the continuum regime, but the influence of the roughness elements on the surface becomes significant, leading to a transition to the slip-flow regime.

This transition is an important consideration for atmospheric boundary layer modeling and for understanding the atmospheric boundary layer structure and turbulence.

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The molarity of the H3PO4 solution is 0.361 M, and the normality of the solution is 1.084 N.

First, we need to determine the molar mass of H3PO4:
1 P = 30.97 g/mol
3 H = 3 x 1.01 g/mol = 3.03 g/mol
4 O = 4 x 16.00 g/mol = 64.00 g/mol
Total molar mass = 30.97 + 3.03 + 64.00 = 98.00 g/mol
Next, we'll calculate the molarity of the solution:
Molarity (M) = (mass of solute in grams) / (molar mass x volume of solution in liters)
M = (35.2 g) / (98.00 g/mol x 1 L) = 0.361 M
To find the normality, we need to consider the number of hydrogen ions that can be replaced in the reaction (i.e., the number of acidic protons). H3PO4 has 3 acidic protons, so we multiply the molarity by 3 to obtain the normality:
Normality (N) = Molarity x number of acidic protons
N = 0.361 M x 3 = 1.084 N

Thus, the molarity of the H3PO4 solution is 0.361 M, and its normality is 1.084 N.

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Answer:

p=F/A.Explanation:

Answer:

Explanation:

ALRIGHT EPIC GAMER IM GONNA INTRODUCE YOU TO THE AWESOME WORLD OF THE PERIODIC TABLE

look at this

6

C

Carbon

12.011

ok so this is what one block on the periodic table looks like

the protons and electrons are going to be the smaller number

so the protons and electrons for carbon are 6

but your question does  not ask for electrons so its fine.

How many protons? LOOK AT THE SMALLER NUMBER IN ELEMENT BLOCK ON PERIODIC TABLE.

How many neutrons? Take the bigger number and subtract the smaller number from it. so it would be for carbon: 12.011 - 6 = 12 neutrons.

to find the name of the atom, just count the number of electrons and then look for the element with the same number to find the name

The symbοls fοr these elements are:

A chemical element is a chemical substance that cannοt be brοken dοwn intο οther substances. The basic particle that cοnstitutes a chemical element is the atοm, and each chemical element is distinguished by the number οf prοtοns in the nuclei οf its atοms, knοwn as its atοmic number.

Fοr example, οxygen has an atοmic number οf 8, meaning that each οxygen atοm has 8 prοtοns in its nucleus. This is in cοntrast tο chemical cοmpοunds and mixtures, which cοntain atοms with mοre than οne atοmic number.

The chemical elements that meet the given criteria (atοmic number less than 15 and atοmic mass greater than 23.9u) are:

Therefοre, the symbοls fοr these elements are:

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Answer:

On the pereiodic table.

Explanation:

The second most reactive of the four carboxylic acid derivatives' relative reaction rates.

However, carbonic acid, not carboxylic acid, is present in human blood. It performs its function in the respiratory system, where it is in charge of concluding the hormonal process that enables breathing. The process is as follows: Blood is transported to the tissues and organs after it has been oxygenated.

The screening assessment resulted in the conclusion that none of the four chemicals in the carboxylic acid group are hazardous to the environment or to human health at the present exposure levels.

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The mass number is the atomic mass rounded to a whole number, i.e., which is a value that rounds the atomic weight to a near number.

The expression mass number is used in chemistry to denote the total amount of subatomic particles i.e. atomic protons and neutrons, which are present in a given atom (for example hydrogen has only one proton and one neutron).

Therefore, with this data, we can see that mass number denotes the overall amount of protons and neutrons present in a given atom, which is equal to one in the hydrogen atom

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Answer:

273.6 g

Explanation:

mass =(density)(volume)

mass=(5.7g/cm^3 )(48 cm^3)

cancel out your cm^3 and your are left with grams

multiply (5.7g)(48)=273.6 g

The mass of an object with a density of 5.7 g/cm³ and a volume of 48 cm³ is 273.6 grams.

Density is defined as the degree to which a material is packed together.

It is also defined as a mass per unit volume of the substance.

Its SI unit is kilogram per cubic meter or  gram per meter.

Density can be expressed as

Density = mass / volume

Mass =  density x volume

As given, Density = 5.7 g/cm³

                Volume = 48 cm³

So, Mass =  5.7 g/cm³ x  48 cm³

               =  273.6 grams

Thus, the mass of an object with a density of 5.7 g/cm³ and a volume of 48 cm³ is 273.6 grams.

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Answer:

=242.47 g of HF

Explanation:

The equivalency solution has a pH of 2.624.

Nitrous acid is frequently created by adding a mineral acid to aqueous sodium nitrite solutions. Typically, acidification is carried out at ice-cold temperatures, and HNO2 is consumed on-site. Nitrous acid in its free form is unstable and breaks down quickly.

In a neutralization process, weak nitrous acid (HNO2) reacts with strong basic KOH.

HNO2 + KOH → KNO2 + H2O

Then, we determine how many moles of KOH were used:

volume KOH x concentration equals moles KOH. KOH

moles KOH = 0.190 L x 0.377 mol/L

moles KOH = 0.07153 mol

Next, we calculate the initial concentration of HNO2:

concentration HNO2 = moles HNO2 / volume HNO2

concentration HNO2 = 0.07153 mol / 0.190 L

concentration HNO2 = 0.3765 M

[HNO2] = 0.5 x 0.3765 M

[HNO2] = 0.1883 M

The following equation can be used to model how nitrous acid dissociates in water:

HNO2 + H2O ⇌ H3O+ + NO2-

The following equation relates the pKa to the acid dissociation constant, Ka, for this reaction:

pKa = -log Ka

So we can find the Ka value from the given pKa:

pKa = -log Ka

3.35 = -log Ka

Ka = 10⁻³

Ka = 4.47 x 10⁻⁴

The relationship shown below is true for the concentrations of the species involved at equilibrium:

Ka = [H3O+][NO2-] / [HNO2]

Ka = [H3O+][NO2-] / [HNO2]

Ka = [H3O+] [HNO2]

Solving for [H3O+], we get:

[H3O+] = Ka / [HNO2]

[H3O+] = (4.47 x 10⁻⁴) / (0.1883 M)

[H3O+] = 0.002374 M

Finally, we can calculate the pH of the solution:

pH = -log[H3O+]

pH = -log(0.002374)

pH = 2.624

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10.5 kJ is required to convert the temperature of water.

What is Temperature?

Temperature is a unit used to describe hotness or coldness. It can be stated in terms of any number of arbitrary scales and shows the direction in which heat energy will naturally flow, i.e., from a hotter body to a colder body (one at a lower temperature). Temperature is not the same as the energy of a thermodynamic system; for instance, an iceberg has a significantly larger total heat energy than a match.

As opposed to extensive characteristics, like mass or volume, temperature is referred to as an intense property—one that is independent of the quantity of matter being considered—along with pressure, density, and other comparable properties.

q=m⋅c⋅ΔT, where

q - heat absorbed

m- the mass of the sample

c- the specific heat of the substance

ΔT - the change in temperature, defined as final temperature minus initial temperature

q=100.0g⋅4.18Jg∘C⋅(50.0−25.0)∘C

q= 10.5 kJ

10.5 kJ is required to convert the temperature of water.

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The mass percent of hydrogen in sodium bicarbonate (NaHCO3) is 1.20% (to the hundredths place).

To determine the mass percent of hydrogen (H) in sodium bicarbonate (NaHCO3), we need to first calculate the molar mass of NaHCO3, which is:

NaHCO3 = 1(Na) + 1(H) + 1(C) + 3(O)

= 23.00 + 1.01 + 12.01 + (3 x 16.00)

= 84.01 g/mol

The mass of hydrogen in one mole of NaHCO3 is 1.01 g, since there is only one hydrogen atom in each molecule of NaHCO3.

Therefore, the mass percent of hydrogen in NaHCO3 can be calculated as follows:

mass percent H = (mass of H / mass of NaHCO3) x 100%

= (1.01 g / 84.01 g) x 100%

= 1.20%

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Answer:

I mean If you're asking a question, then yes.

The pH of resulting buffer from the Henderson- Hasselbalch is 10.01.

To calculate the pH of the buffer, we need to use the Henderson-Hasselbalch equation:
pH = pKa + log([A-]/[HA])
First, we need to find the concentration of NH3 and NH4Cl in the solution.
Molar mass of NH3 (ammonia) = 17.03 g/mol
Molar mass of NH4Cl (ammonium chloride) = 53.49 g/mol
Concentration of NH3 = (7.81 g / 17.03 g/mol) / (0.250 L)
Concentration of NH4Cl = (6.54 g / 53.49 g/mol) / (0.250 L)
Next, we need to find the pKa of NH3/NH4Cl.

The pKa of NH4Cl is approximately 9.24.
Finally, substitute the values into the Henderson-Hasselbalch equation:
pH = 9.24 + log([NH3] / [NH4Cl])
Calculate the ratio [NH3] / [NH4Cl] and substitute it into the equation to find the pH.

So, the pH of resulting buffer from the Henderson- Hasselbalch is 10.01.

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Answer:

The generic equation for a combustion reaction is AB + O2 à AO + BO

Explanation:

Answer:

a) The predominant Brownstead-Lowry acid- base is perchloric acid

b) A conjugate acid base pair is HClO4 and ClO4^-

c) forward reaction is favored and equilibrium position lies towards the far right

Explanation:

The molecular equation is;

HClO4(aq) + NaH2PO4(aq) -----> H3PO4(aq) + NaClO4(aq)

The net ionic equation of the reaction is;

H^+(aq) + H2PO4^-(aq) ----> H3PO4(aq)

The predominant Brownstead-Lowry acid- base is perchloric acid .

A conjugate acid base pair is HClO4 and ClO4^-

Since the both species; perchloric acid and sodium dihydrogen phosphate are both highly soluble in water yielding ions and also dissociate to a large extent in solution, the forward reaction is favoured leading to the formation of phosphoric acid. Remember that phosphoric acid does not easily dissociate in solution hence the forward reaction is faster than the reverse reaction and the equilibrium position lies towards the far right.

The reaction with S_N₂mechanism is likely to be faster than the reaction with S_N₂ mechanism. This is because the carbocation intermediate formed in S_N₁ mechanism is more stable.

The pair of reactions given below is:

CH₃Cl + NaOH→CH₃OH + NaCl

CH₃I + NaOH→CH₃OH + NaI

The type of substitution mechanism:

The first reaction involves S_N₁ mechanism (unimolecular nucleophilic substitution). The second reaction involves S_N₂ mechanism (bimolecular nucleophilic substitution).

Prediction of the reaction that will occur at a faster rate:

The reaction with S_N₁ mechanism is likely to be faster. The rate of this reaction mainly depends on the stability of the carbocation intermediate formed after the initial step. In this case,CH₃Cl reacts to form a tertiary carbocation which is more stable than the primary carbocation formed in CH₃I.

Drawing the correct organic product:

CH₃Cl + NaOH→CH₃OH + NaCl

CH₃I + NaOH→CH_3OH + NaI

CH₃C reacts with NaOHin an S_N₁ mechanism to produceCH₃OH and NaCl.


CH₃ reacts withNaOH in an S_N₂mechanism to produce CH₃OH and NaCI.


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