would it be possible to conduct a uv/vis spectroscopy experiment on a solution containing a colored compound

Answers

Answer 1

Yes ,because all colored compounds absorb light in the visual spectrum.

What is UV-Vis spectroscopy?UV-Vis spectroscopy is an analytical technique that compares the amount of discrete wavelengths of UV or visible light absorbed or transmitted by a sample to a reference or blank sample. The sample composition influences this attribute, which may provide information about what is in the sample and at what concentration.The measurement of the attenuation of a light beam after it passes through a sample or after reflection from a sample surface is known as ultraviolet and visible (UV-Vis) absorption spectroscopy.In analytical chemistry, UV-visible spectroscopy is commonly employed to quantify analytes such as transition metal ions, strongly conjugated chemical compounds, and biological macromolecules. The UV-visible spectrum is used to determine the size and concentration of nanoparticles.

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Related Questions

Devise a 6-step synthesis of a carboxylic acid from ethyne using the reagents provided.

Answers

A synthesis reaction is one in which a product is made from two  or mote reactants.

What is reaction mechanism?

The term reaction mechanism refers to the sequence of steps that has to be involved as a reactant is converted to products.

The process of converting ethyne to carboxyllic acid passes through a six step process which includes the oxidation of the substrate using permanganate in basic solution.

The detailed mechanism for the synthesis of a carboxylic acid from ethyne  is shown in the image attached to this answer.

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Devise a 6-step synthesis of a carboxylic acid from ethyne using the reagents provided.

The carbonyl carbon in a ketone is attacked primarily by the peroxy oxygen bonded to hydrogen as opposed to the peroxy oxygen bonded to carbon because:

Answers

Answer:

This is because peroxy oxygen bonded to hydrogen can easily undergo nucleophilic protonation with the carbonyl carbon to form an alcohol

Explanation:

A ketone is a functional group that contains a carbonyl group (carbon-oxygen double bond ( R1R2-C=O).

The carbonyl carbon doubly bonded to the oxygen is electron deficient as a result of difference in electronegativity between carbon and oxygen, hence is susceptible to nucleophilic attacks

R1R2 - C = O

where R1 and R2 are organic substituents.

The peroxy oxygen that is bonded to hydrogen (H -O-O-R) is the electron-rich centre and easily attacks electron-deficient centres like the carbonyl carbon in ketones to form an alcohol.

The bond between the hydrogen attached to the peroxy oxygen is broken and the resultant hydrogen ion undergoes protonation with the oxygen of the carbonyl group to form an alcohol

R1R2 - C = O + H - O-O - R =>

R1R2- CH - OH + R - O-O-R1

(Show work) An Erlenmeyer flask contains a mixture of argon neon and krypton gas. what would be the total pressure if Pn=240mmhg Pne=52mmhg and Pkr= 419mmhg?​

Answers

Answer:

The total pressure of the gas mixture is given by the sum of the partial pressures of each gas:

Ptotal = Pn + Pne + Pkr

Substituting the given values:

Ptotal = 240 mmHg + 52 mmHg + 419 mmHg

Ptotal = 711 mmHg

Therefore, the total pressure of the gas mixture is 711 mmHg.

why aliminium is use in manufacturing aeroplanes

Answers

Answer: Aluminum is ideal for aircraft manufacture because it's lightweight and strong.

Explanation:

answer for brainlist and extra points!!

answer for brainlist and extra points!!

Answers

Answer:D

Explanation:

Answer: D- artificial selection

which compound(s) exhibit only london dispersion intermolecular forces? (select all that apply.) pf3 of2 n2 ch3ch2nh2 ch3ch2oh ch4

Answers

Because they are non-polar molecules, SF6 and PF5 compound(s) only show london dispersion intermolecular forces. The attractive and repulsive forces are referred to as intermolecular forces.

that develop in a substance's molecules. Individual molecules of a substance interact with one another through the mediation of these forces. Polarizability is the term used to describe a molecule's propensity to produce a charge separation or induced dipole.  intermolecular forces have a strength of the interaction between two dipoles, indicated as, can be used to express it.

The non-polar molecules are those that do not have charges at the end because their electrons are evenly distributed throughout and those that symmetrically cancel one another. Is called  non-polar molecules.

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The complete question is-

Which Compound(S) Exhibit Only London Dispersion Intermolecular Forces? (Select All That Apply.) OF2 CH3OH SF6 CH3CH2NH2 PF5 BrF3

Calculate the volume of gas, in L, occupied by 1.74 moles of SF6 (g) at 273 K and 1 atm

Answers

The volume of gas is 3,949.31 litre, occupied by 1.74 moles of SF6 (g) at 273 K and 1 atm.

What is an ideal gas law ?

The ideal gas law is also called as perfect gas law. It is the relation between the pressure P, volume V, and temperature T of a gas.  

Given:

Volume of gas = ?

Number of moles (n) = 1.74 moles

Temperature (T) = 273K

Pressure (P) = 1 atm

R (gas constant) = 8.314

By an ideal gas equation

PV = nRT

By putting above value in ideal gas equation, we get

1 × V = 1.74 × 8.314 × 273

V = 3,949.31 litre

Thus, The volume of gas, in L is 3,949.31 litre, occupied by 1.74 moles of SF6 (g) at 273 K and 1 atm.

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What are three concepts that you may explore while learning in a physical science course?

Answers

Chemistry, geology, astronomy

WILL MARK AS BRAINLIEST IF CORRECT

WILL MARK AS BRAINLIEST IF CORRECT

Answers

Answer:

I don't know what is the actual answer

Prop-2-en-1-ol (allyl alcohol) has the following structure. Which reagent would react with prop-2-en-1-ol to form a product that could exist as optical isomers?   ​

Answers

The reaction of prop-2-en-1-ol with HBr in the presence of a peroxide catalyst would produce a product that exists as optical isomers.

Prop-2-en-1-ol (allyl alcohol) has a chiral center, which means that it can exist as optical isomers. To form a product that could exist as optical isomers, the reagent should react with the chiral center of the molecule, causing it to become asymmetric.

One reagent that could achieve this is hydrogen bromide (HBr) in the presence of a peroxide catalyst. This reaction, known as hydrobromination, involves the addition of HBr across the double bond of prop-2-en-1-ol to form 2-bromopropan-1-ol. The addition of HBr to the double bond creates a new chiral center, which results in the formation of two enantiomers of the product.

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Explain why the answer is correct and why the others aren’t.
Pleaseeee

Explain why the answer is correct and why the others arent. Pleaseeee

Answers

Answer:

Buffalo and Watertown.

Explanation:

This is correct as the Interior lowlands are located ib the US. These are correct as the others are in the US but aren't located anywhere near the Interior Lowlands.

What is a reasonable measurement for the distance to the nearest star?

A. 4.2 parsecs

B. 4.2 light years

C. 4.2 Astronomical Units

D. 4.2 kilometers

Answers

Answer: i believe the answer is parsecs!

Explanation:

Describe the energy inputs and outputs of a bonfire.​

Answers

Answer:

The logs are the input and the flames are the output

Explanation

what force causes the bulk flow of fluids (gases and liquids)?

Answers

The force that causes the bulk flow of fluids (gases and liquids) is pressure gradient.

Bulk flow is the movement of fluids from an area of high pressure to an area of low pressure.

The pressure gradient is the change in pressure over a given distance, and fluids naturally flow from higher pressure to lower pressure in order to equalize the pressure gradient.

This is evident in many natural phenomena, such as wind and water currents, as well as in man-made systems like pipelines and ventilation systems.

Understanding the principles of pressure and bulk flow is important in fields such as fluid mechanics, physiology, and engineering, as it allows for the efficient movement and control of fluids for various purposes.

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Under what circumstances are electron geometry and molecular geometry not the same?

Answers

Electron geometry and molecular geometry are not the same under circumstances when a molecule has one or more lone pairs of electrons. Electron geometry refers to the arrangement of electron groups around a central atom, while molecular geometry describes the arrangement of atoms in a molecule. In molecules with only bonded atoms and no lone pairs, both geometries will be identical.

However, when lone pairs are present, they occupy space and repel the bonded atoms, leading to a difference between the electron geometry and molecular geometry. Lone pairs exert a greater repulsion force compared to bonding pairs because they are not constrained by two nuclei. This causes the molecular shape to be altered as the bonded atoms are pushed closer together.

For example, consider the ammonia molecule (NH3). The central nitrogen atom has three bonded hydrogen atoms and one lone pair of electrons. The electron geometry is tetrahedral, but due to the lone pair repulsion, the molecular geometry is trigonal pyramidal. Similarly, in a water molecule (H2O), there are two bonded hydrogen atoms and two lone pairs of electrons on the central oxygen atom. The electron geometry is again tetrahedral, but the molecular geometry is bent or V-shaped.

In summary, electron geometry and molecular geometry differ when a molecule has one or more lone pairs of electrons, as they affect the spatial arrangement of the bonded atoms due to increased repulsion forces.

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Using the laws of chemical reactions solve the following exercises.
(a) It is known that 4 g of molecular hydrogen react completely with 32 g of molecular oxygen forming water. Now, under the same conditions of the previous reaction, 4g of molecular hydrogen with 16g molecular oxygen; write the corresponding chemical reactions, and find the efficiency of the reaction.
(b) It is known that every 2g of atomic sulfur reacts with 3g of molecular oxygen to form sulfur trioxide. Write the corresponding chemical reaction, and calculate the grams of oxygen molecular and atomic sulfur needed to form 200 g of sulfur trioxide.
(c) The nitrogen atom forms five compounds with oxygen that are stable under conditions
standard atmospheric. These nitrogen oxides 1
have the following chemical formulas: N2O, NO,
N2O3, N2O4, and N2O5. Explain this phenomenon.

Answers

(a) Efficiency: 100% for 4 g H₂ + 16 g O₂ → H₂O.

(b) 200 g SO₃ requires 60 g O₂ and 40 g S.

(c) Nitrogen forms five stable oxides due to oxidation state variation and different nitrogen-to-oxygen ratios.

(a)

To find the efficiency of the reaction when 4 g of molecular hydrogen reacts with 16 g of molecular oxygen, we need to compare the amount of water produced with the theoretical maximum amount.

Molar mass of H₂ = 2 g/mol

Molar mass of O₂ = 32 g/mol

The balanced equation shows that 2 moles of H₂ react with 1 mole of O₂ to form 2 moles of H₂O. Therefore, the theoretical yield of water can be calculated as follows:

4 g H₂ × (1 mol H₂ / 2 g H₂) × (2 mol H₂O / 2 mol H₂) × (18 g H₂O / 1 mol H₂O) = 18 g H₂O

The efficiency of the reaction is the actual yield of water obtained divided by the theoretical yield, multiplied by 100%:

Efficiency = (Actual yield / Theoretical yield) × 100%

Efficiency = (18 g H₂O / 18 g H₂O) × 100% = 100%

(b) To calculate the grams of molecular oxygen and atomic sulfur needed to form 200 g of sulfur trioxide (SO₃), we need to use stoichiometry and the molar masses of the substances involved.

Molar mass of S = 32 g/mol

Molar mass of O₂ = 32 g/mol

From the balanced equation, we can see that 2 moles of S react with 3 moles of O₂ to form 2 moles of SO₃. Therefore, the molar mass of SO₃ can be calculated as follows:

Molar mass of SO₃ = (2 × molar mass of S) + (3 × molar mass of O₂)

Molar mass of SO₃ = (2 × 32 g/mol) + (3 × 32 g/mol) = 160 g/mol

To find the moles of SO₃ corresponding to 200 g, we use the equation:

200 g SO₃ × (1 mol SO₃ / 160 g SO₃) = 1.25 mol SO₃

According to the stoichiometry of the balanced equation, 2 moles of S react with 3 moles of O₂. Therefore, the moles of O₂ required can be calculated as follows:

1.25 mol SO₃ × (3 mol O₂ / 2 mol SO₃) = 1.875 mol O₂

Finally, we can determine the grams of O₂ and S needed:

Grams of O₂ = (1.875 mol O₂) × (32 g/mol) = 60 g O₂

Grams of S = (1.25 mol SO₃) × (32 g/mol) = 40 g S

(c)The phenomenon of nitrogen forming five stable compounds with oxygen can be explained by the different oxidation states of nitrogen and the varying ratios of nitrogen to oxygen in each compound. Nitrogen can exhibit oxidation states ranging from -3 to +5.

The nitrogen oxides listed, N₂O, NO, N₂O₃, N₂O₄, and N₂O₅, represent different combinations of these oxidation states.

N₂O has nitrogen in the +1 oxidation state.

NO has nitrogen in the +2 oxidation state.

N₂O₃ has nitrogen in the +3 oxidation state.

N₂O

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research the Greenhouse effect and how it relates to heat transfer.

Answers

Answer:

The greenhouse effect is a phenomenon of radiative transfer, the process by which the energy of light waves is exchanged in matter. Radiative transfer dictates what energy is reflected, absorbed, and emitted. The greenhouse effect: A summary of the heat transfer in the Earth's atmosphere

Explanation:

trust me i have a huge brain and access to the internet

can someone help me solve the questions below using the data table below please

DATA TABLE:

Mass of flask and vinegar solution- 25.17g
Mass of flask- 15.12g
Volume of vinegar solution (in mL)- 10.00ml
Initial volume of NaOH (in mL)-0.00ml
Final volume of NaOH (in mL)-39.00ml

CALCULATIONS:
Mass of vinegar solution- 10.0503g
Volume of NaOH used in titration (in mL)-39.00ml

can someone help me solve the questions below using the data table below pleaseDATA TABLE: Mass of flask

Answers

The percent by mass of acetic acid in the vinegar is 2.33%.

Below are the steps to solve the given problem using the data table given below:

Step 1: Calculate the mass of the vinegar. Given,Mass of flask and vinegar solution- 25.17gMass of flask- 15.12gMass of vinegar solution = Mass of flask and vinegar solution - Mass of flask= 25.17 g - 15.12 g= 10.05 g

Step 2: Calculate the moles of NaOH used in the titration.Molarity of NaOH solution is 0.1 M.Moles of NaOH = Molarity × Volume of NaOH usedMoles of NaOH = 0.1 M × 39.00 mL (since the initial volume of NaOH is 0.00 mL)Moles of NaOH = 0.0039 moles

Step 3: Determine the moles of acetic acid used in the reaction.The balanced chemical equation for the reaction between NaOH and acetic acid (the main component of vinegar) is given below:CH3COOH + NaOH → CH3COONa + H2OMoles of NaOH = Moles of CH3COOH (since they react in a 1:1 ratio)Moles of CH3COOH = 0.0039 moles

Step 4: Calculate the mass of acetic acid used in the reaction.Molar mass of acetic acid is 60.05 g/mol.Mass of CH3COOH = Moles of CH3COOH × Molar mass of CH3COOH= 0.0039 moles × 60.05 g/mol= 0.234 gStep 5: Calculate the percent by mass of acetic acid in the vinegar.Percent by mass of acetic acid = (Mass of CH3COOH / Mass of vinegar solution) × 100%= (0.234 g / 10.05 g) × 100%= 2.33%.

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starting with 0.050 mole cu2 and 0.50 mol nh3 in a 1.00 l container. calculate the [cu2 ] at equilibrium.

Answers

We can define a quantity called the equilibrium constant \(K_{c}\) based on the concentrations of all the different reaction species at equilibrium, which is also sometimes written as \(K_{eq}\) or K.

Because the equilibrium constant describes the molar concentrations, at equilibrium for a specific temperature, the c in the subscript stands for concentration \(\frac{mol}{L}\).

At equilibrium, the equilibrium constant can tell us whether the reaction has a higher concentration of products or reactants. We can also use \(K_{c}\) to see if the reaction has already reached equilibrium.

If any of the reactants or products are gases, the equilibrium constant can also be expressed in terms of the partial pressure of the gases. We typically use that value as \(K_{p}\) to distinguish it from the equilibrium constant when using molar concentrations \(K_{c}\).

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starting with 0.050 mole cu2 and 0.50 mol nh3 in a 1.00 l container. calculate the [cu2 ] at equilibrium.

in a chemical reaction, glyceraldehyde-3-phosphate nad yields 1,3-bisphosphoglycerate nadh. in this reaction, what happened to nad ?

Answers

In the chemical reaction, NAD+ is reduced to NADH.

In the given chemical reaction, glyceraldehyde-3-phosphate is being oxidized, while NAD+ is being reduced. NAD+ (nicotinamide adenine dinucleotide) is a coenzyme that acts as an electron carrier in redox reactions. During the reaction, NAD+ accepts two electrons and a hydrogen ion (H+) to form NADH.

The oxidation of glyceraldehyde-3-phosphate results in the transfer of electrons to NAD+, leading to its reduction. As a result, NAD+ is converted to NADH, which now carries the extra electrons and a hydrogen ion.

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What does the hydrosphere include?

Glaciers
Groundwater
Lava
Polar Ice

Answers

The hydrosphere include glaciers, groundwater, and polar ice. That is option A, B and C.

What is hydrosphere?

Hydrosphere is defined as the part of the earth that is made up of water which includes the surface of the planet, underground, and in the air.

The water found in the hydrosphere of earth moves in cycles in such a way that non is lost.

The components of the hydrosphere include the following:

oceans, Polar ice,freshwater,surface water, groundwater, glacial water, and atmospheric water vapour.

The polar ice is part of the hydrosphere because it is the frozen part of the earth's hydrosphere.

The lava is not part of the hydrosphere but part of lithosphere and it's released when volcanic eruptions occurs.

Therefore is can be concluded that glaciers, groundwater, and polar ice are parts of the hydrosphere while the lava is not part of the hydrosphere.

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Which property of light does this diagram show?

Answers

Full question need, post more


Explain biomass combustion and energy recovery using grate
furnace or fluidized bed systems

Answers

Biomass combustion is referred to as a process in which organic materials are burnt and their remains are used to produce energy.

The process of combustion is very simple it refers to the burning of biomass which include wood, farm waste, and crops which are further used to produce or generate energy in the form of electricity and also heat, it can be termed as renewable energy that utilized the energy of biomass to produce another form of energy.

The Grate furnace method is one of the common methods used for biomass combustion and comprises several steps for the recovery of energy.    

The first step consists of drying up the biomass by removing all the moisture using heat. The next step includes the production of flames and heat by combusting hydrogen present in it. After that, the remaining solid waste will undergo combustion in the presence of oxygen.

The last step includes the disposal of ash which gets accumulated due to incombustible materials like sand.

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Which lists the waves in order of wavelength, from longest to shortest?
A) X-rays, infrared, radio waves
B) infrared, visible light, gamma rays
C) ultraviolet, microwaves, visible light
D) radio waves, gamma rays, visible light

Answers

Answer:

B

Explanation:

gamma rays have the shortest wave length

Infrared, visible light and gamma rays are lists of the waves in order of wavelength, from longest to shortest. Hence, option B is correct.

What is wavelength?

Wavelength is the distance between identical points (adjacent crests) in the adjacent cycles of a waveform signal propagated in space or along a wire.

The electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, X-rays, and gamma-rays.

Hence, option B is correct.

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Which of the following describes what a scientist does?

Answers

Answer:

people who discover new things fyi you dont have any answer choices on there

Explanation:

there are different type of scientist

Answer:

A scientist asks questions about the world.

Explanation:

Which ion will combine with sulfide in a 2:1 ratio, and why?

a). chloride
b). magnesium ion
c). ammonium
d). nitrate

Answers

The ion which will combine with sulfide in a 2:1 ratio is Choice B: Ammonium.

The sulfide ion is negatively charged and needs two electrons to complete it's octet;

In essence, it needs two positive charges.

However, since the question asks Which ion will combine with sulfide in a 2:1 ratio.

The ion is ammonium ion; NH4+

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BRAINLIST!!!

Which of the following best describes a process of erosion?

A.
Rocks along the coast are broken up by waves crashing into the shore.
B.
Mud, silt, sand, and pebbles are carried across the region by running water.
C.
Glaciers wear down and smooth rock as they slide across it.
D.
The wind lays down sediment to form small hills called dunes.

Answers

Answer:

The answer is C

A student conducts a calorimetry experiment to determine the change in enthalpy for an acid base reaction. 100.00 mL of a 1.000M of a monoprotic acid at 25.0∘C and 100.00 mL of 1.000MNaOH at 25.00∘C are mixed. The density \& specific heat capacity of the resulting solution 1.023 g/mL&4.267 J/g∘C respectively. After mixing, the solution's final temperature is 31.19∘C. (a) Determine the heat absorbed by the solution in this experiment. (10 pts) (b) The calorimeter used in this experiment also experiences and increase in temperature of 6.19 ∘C. The heat capacity of the calorimeter is 15 J/∘C. Determine the heat absorbed by the calorimeter in this experiment. (10 pts) Problem 5 continued... (c) The student is at home working on their lab report write-up. They realize they did not record the identity of the acid they used in this experiment. When they look at the lab manual they read that they had the choice of hydrochloric acid (ΔH=−58 kJ/mol), nitric acid (ΔH=−57 kJ/mol) and acetic acid ( ΔH=−55 kJ/mol). They look up the change of enthalpy for each acid's reaction with sodium hydroxide. Calculate the change in enthalpy for the reaction in their experiment to determine the identity of the acid.

Answers

The heat absorbed by the solution in this experiment:Given volume of 1.000M of a monoprotic acid = 100.00 mLGiven volume of 1.000M NaOH = 100.00 mLDensity of the resulting solution

= 1.023 g/mLSpecific heat capacity of the resulting solution

= 4.267 J/g°CInitial temperature of the solution = 25°CFinal temperature of the solution

= 31.19°C

The change in temperature = (31.19 - 25)°C

= 6.19°CCalculate the number of moles of the acid:100.00 mL of 1.000M of the acid

= 0.1 L × 1.000 mol/L

= 0.1 molThe number of moles of NaOH

= 0.1 molThe number of moles of H+

= 0.1 mol (Since the acid is monoprotic)The heat absorbed by the solution:q

= m × c × ΔTWhere,m

= mass of the solution

= volume × density

= (0.1 + 0.1) L × 1.023 g/mL

= 0.2046 kgc

= specific heat capacity of the solution

= 4.267 J/g°CΔT = change in temperature

= 6.19°CTherefore,q

= 0.2046 × 4.267 × 6.19

= 5.464 J (answer)The heat absorbed by the calorimeter:Heat absorbed by the calorimeter

= (Mass of the calorimeter × Specific heat capacity of the calorimeter × Change in temperature)Heat capacity of the calorimeter = 15 J/°CMass of the calorimeter

= Heat capacity of the calorimeter / Specific heat capacity of the calorimeter

= 15 J/°C ÷ 4.267 J/g°C

= 3.51 g

= 0.00351 kgChange in temperature

= 6.19°C

Total heat absorbed by the calorimeter:Heat absorbed by the calorimeter = 0.00351 × 6.19 × 15

= 0.33 J (answer)The change in enthalpy for the reaction:ΔH

= -q / nFor the given reaction, we have a strong base (NaOH) reacting with a monoprotic acid. Therefore, the reaction is as follows:HA (aq) + NaOH (aq) → NaA (aq) + H2O (l)The balanced chemical equation is:NaOH (aq) + HX (aq) → NaX (aq) + H2O (l)where,HX is the monoprotic acid.NaOH and HX react in a 1:1 molar ratio.Therefore, the number of moles of NaOH that reacted in the experiment is equal to the number of moles of HX.ΔH (HX) = -q / n(HX)ΔH (HX)

= -q / 0.1ΔH (HX)

= -5.464 kJ/molThe student used hydrochloric acid because the value of the change in enthalpy (-58 kJ/mol) is the closest to the value calculated.

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at 20°c, a cell containing 0.6m glucose is in equilibrium with its surrounding solution containing 0.5m glucose in an open container. what is the cell’s ψp?

Answers

The cell’s pressure potential or ψp is 2.44 bars if the cell contains 0.6M glucose at 20°c with its surrounding solution containing 0.5M glucose.

As;

ψoutside = ψcell ( here ψ represents water potential)

Therefore;

ψp outside + ψs outside = ψp cell + ψs cell ( Since, ψ = ψp + ψs)

As ψs = -iCRT, therefore

0 + (-iCRT outside) = ψp cell + (-iCRT cell)

In iCRT, i represents the ionization constant

C represents the Molar concentration

R represents the Pressure constant 0.0831 liter bars/mole at degrees Kelvin

T represents temperature (degree kelvin)

Substituting the values;

(-1)(0.5M)(0.0831)(20 + 273) = ψp - (1)(0.6M)(0.0831)(20 +273)

-12.17 = ψp cell - 14.61

ψp cell = (-12.17) + 14.61

ψp cell = 2.44 bars

Therefore, the cell’s pressure potential (ψp) is calculated to be 2.44 bars if the cell contains 0.6M glucose at 20°c with its surrounding solution containing 0.5M glucose.

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The students are studying the process of how controlled gasoline explosions that take place in a cars engine change the potential chemical energy into the kinetic mechanical energy that moves the car.
which statement is true about this reaction?
A..This is an exothermic reaction because energy is absorbed.

B.this an endothermic reaction because energy is absorbed.

C.this is an exothermic reaction because energy is released

D.this is an endothermic reaction because energy is released​

Answers

Answer:

C.this is an exothermic reaction because energy is released

Explanation:

The explosion of gasoline in a car engine is an exothermic reaction.

An exothermic reaction is one in which heat is given out to the environment. That means, heat is released during the reaction.

When gasoline undergoes controlled explosion in car engines, heat is released, hence the answer.

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why is it important that the admitting doctor record information about the patients hearts,lungs,and other body systems when the pain is in the patient's abdomen what does cato's attitude reveal about the worries/anxieties of powerful roman men in the 2nd century bce? Can somebody please help me with this essay? I'm begging please! (750 - 800 words)Fall of Communism in Eastern Europe:Gorbachev's reforms and decision not to use force to support Communism in the satellitesUnrest in the satellites nationsSpecific examples of what happened in at least three of the countries a new office building will have 640 co workers.A construction code requires that the new building 2 restrooms for every 80 workers in the building.Based on the construction code what is the total number of bathrooms the new office building must have? Acrylonitrile and ethyl acetate have the same boiling point: 77.2C. In one to two sentences, explain what outcome you would expect if a mixture of these two substances were distilled (SHORT ANSWER) A group of 8 friends went to lunch and spent a total of $76, which included the food bill and a tip of $16. They decided to split the bill and tip evenly among themselves. Which equations and solutions describe the situation? Select two options.The equation StartFraction 1 over 8 EndFraction (x + 16) = StartFraction 76 over 8 EndFraction represents the situation, where x is the food bill.The equation StartFraction 1 over 8 EndFraction (x + 16) = 76 represents the situation, where x is the food bill.The solution x = 60 represents the total food bill.The solution x = 60 represents each friends share of the food bill and tip.The equation 8 (x + 16) = 76 represents the situation, where x is the food bill. If we have 0.06 moles of HCI How many grams of magnesium metal is that? On a dogleg golf hole, one golfer hits the ball 260 yards and then another 160 yards to reach the green. The angle between the two hits is equal to 100 degrees. How far would the golfer have to originally hit the ball for it to go directly to the same position on the green? HELP FAST. Which category or categories (subsets) does -2.5 belong to? Select all that apply. A. Integer B. Irrational C. WholeD. Rational E. Natural a client with diabetic nephropathy has end-stage renal disease and is starting dialysis. what should the nurse teach the client about hemodialysis? ________ consists of a succinct description of the core target market to which a product is directed and a compelling picture of how the firm wants that core market to view the product. Recall What was considered the primary interest and major accomplishment of Chinese painting? Find the value of y.answer choicesA. 118B. 32.5C. 65D. 130 Q25 give correct answer in 10 mins i will thumb upthanksQUESTION 25 El Toro Manufacturing Inc declared a 25% share dividend when it had 200,000 ordinary shares (5 par value) outstanding. The market price per share was 8 on the declaration date. The e +++ba0CAll of the following statements are all true exceptThe quotient of a and b is positive.The quotient of O and cis O.The quotient of cand bis negative.The quotient of O and a is undefined. What we say teacher in french Will give brainless-est please help with this cant figure it out NO LINKS PLEASE they don't work According to Mr. Pinkney, the ownership of slaves in the southern states is tolerable because slavery A. must grow for the economy to grow. B. is common throughout the world. C. is the right thing to do for Africans. D. will soon spread to other territories. PLEASE ANSWER FAST!!!!! I WILL GIVE BRAINIEST, EXTRA 25 POINTS, THANKS, 5 STARS!!!!! The diagram below shows the branching tree diagram for humans. The text box below it shows the set of derived shared characteristics for the branching tree.A slanting, horizontal line is shown. On the extreme left, there is a label that says Common Ancestor. Along the slanting, horizontal line there are five dots labeled from left to right as 1, 2, 3, 4, and 5. There is one vertical line between each of the consecutive five dots. The lines are labeled from left to right as Perch, Frog, Pigeon, Rats, and Human. A text box below the branching tree diagram is labeled Derived Shared Characteristics. In the box it says from left to right, Terrestrial during all stages, Jaws, Walking on two legs, Mammary glands and hair, and Four limbs.Look at the possible derived shared characteristics, shown in the text box. Think about where these should be placed along the branching tree diagram. eory.According to cell theory, which of the following aremade of cells? Check all that apply.O flowersrocksbloodwaterbacteriasugarskinRETRY