When the rate of reaction of bleach and dye are studied which reactant is in excess?.

The solvent will flow to the top of the TLC plate and the chemicals identified on the silica plate will travel farther than expected if the TLC plate is left in the developing chamber for an extended period of time.

That might lead to inaccurate Rf readings and the close-together spots colliding. With tweezers, remove the plate, and as soon as you can, pencil in the solvent front line.

If you wait too long, it will fade and you won't have all the data you need to figure out the Rf values.

There is no way to tell where the line should be drawn because the solvent front reached the top.

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Xenon a noble gas shows the greatest deviation from the ideal gas law at high pressures.

Real gases behave very differently from ideal gases at high pressures or low temperatures. It's useful to be aware that the ideal gas law considers the size of gas molecules to be minimal or nonexistent.

Due to its size and the fact that it is the largest of the group, Xe is predicted to deviate from the ideal gas the most under conditions of high pressure or low temperature.

Van der Waal forces come into play as gaseous atoms or molecules grow closer to one another under high pressure and low temperature. As a result, atoms or molecules begin to attract one another. As a result, gas behaves the furthest from its ideal state. While in an ideal world there would be no intermolecular forces of attraction, we can assume that gases do not attract one another.

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The wavelength of the wave having a frequency of 5.00×10¹⁴ s⁻¹ is 6×10⁻⁷ m

We know that the velocity is related to wavelength and frequency according to the following formula:

Velocity (v) = wavelength (λ) × frequency (f)

v = λf

Thus, with the above formula, we can determine the wavelength. Details below:

Velocity (v) = wavelength (λ) × frequency (f)

3×10⁸ = wavelength × 5.00×10¹⁴

Divide both sides by 5.00×10¹⁴

Wavelength = 3×10⁸ / 5.00×10¹⁴

Wavelength = 6×10⁻⁷ m

Therforee, the wavelength is 6×10⁻⁷ m

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Calcium hydroxide is created when calcium and oxygen mix.

Calcium Hydroxide in the Electron Dot formula:

Ca is a compound (OH)

Name of second compound is Calcium Hydroxide.

A Lewis structure is a very condensed representation of the electrons in the valence shell of a molecule. It is used to show the electron arrangements around specific atoms in compounds. The electrons are shown as "dots" or as a line when two atoms are bound together. To reach the "ideal" electron configuration, the octet rule and formal charges must be met.

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The term "buffer" refers to a solution's capacity to withstand pH fluctuations, even when additional bases or acids are introduced. Buffer has the ability to neutralize any acids or bases supplied to the system in order to stabilize it.

Equivalent molar ratios of KH2PO4 and K2HPO4 when combined with water result in the creation of buffer solution. A particular kind of dibasic salt is dipotassium phosphate. K2HPO4 is the solution that is created when hydrogen ions are added to K3PO4, and it functions as a conjugate acid. H2PO4 acts as a weak acid and HPO2 acts as a conjugate base of a in this system of buffers diluted acid . As a result, this KH2PO4 and K2HPO4 solution in water serves as a buffer.

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Answer:

Explanation:

The law of conservation of matter state that matter can't be created or destroyed but can change from one form to another. Option C is correct.

What is the law of conservation of matter?

According to the principle of conservation of matter, although matter cannot be generated or destroyed.

The law of conservation of matter state that matter can't be created or destroyed but can change from one form to another.

Hence option C is correct.

Answer:

c

Explanation:

Precipitate Ca₃(PO₄)₂ would be created by mixing sodium phosphate with calcium acetate.

When dissolved compounds react, they might produce one or more solid products in a process known as precipitation. Double displacement, double replacement, or metathesis reactions are some names for several of these processes, which frequently include the exchange of ions between ionic compounds in aqueous solutions.

Two soluble salts react to form precipitates, an insoluble salt.

The following equation illustrates the reaction between calcium acetate and sodium phosphate:

3Ca(C₂H₃O₂)₂ + 2Na₃PO₄ → Ca₃(PO₄)₂ +6NaC₂H₃O₂

The reaction produces Ca3(PO4)2, which is an insoluble salt and a precipitate.

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Explanation:

Relation between concentration and absorbance: Absorbance is directly proportional to the concentration of the substance. The higher the concentration, the higher its absorbance.

The relationship between absorbance of light by a solution and its concentration should be Linear

b) Linear

so that when concentration increases, absorbance Increases

c) Increases

The Beer-Lambert Law, also known as the Beer-Lambert-Bouguer Law, describes the relationship between the absorbance of light by a solution and the concentration of the absorbing solute in that solution. This law is fundamental in spectroscopy and is used to quantify the concentration of a solute in a solution.

The Beer-Lambert Law is expressed as:

A = ε * c * l

Where:

A is the absorbance of the solution (unitless),

ε is the molar absorptivity or molar extinction coefficient (a constant specific to the solute and the wavelength of light),

c is the concentration of the solute in the solution (usually in mol/L or M),

l is the path length of the light through the solution (usually in centimeters).

The relationship between absorbance of light by a solution and its concentration should be: Linear

so that when concentration increases, absorbance: Increases

In a linear relationship, the absorbance of light by a solution increases in direct proportion to the concentration of the solute in the solution. As the concentration of the solute increases, more light is absorbed by the solution, leading to a higher absorbance value.

Therefore, when the concentration of a solution increases, the absorbance of light by that solution also increases in a linear fashion.

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The complete question is:

The relationship between absorbance of light by a solution and its concentration should be ___

Choose:

a) Exponential

b) Linear

c) Inverse

so that when concentration increases, absorbance ___

Choose:

a) Does Not Change

b) Decreases

c) Increases

The sequence of events that resulted in the end of reconstruction include:

The Reconstruction era was a period in American history  following the American Civil War (1861–1865) and lasting until approximately the Compromise of 1877—when the last federal troops were withdrawn from the South—where attempts were made to deal with the problems of readmitting the eleven states that had seceded from the Union and fought against it in the Civil War, and to redress the political, social, and economic legacies of slavery.

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Three molecules of ribulose-1,5-biphosphate are generated from the remaining five G3P molecules.

Calvin cycle, also known as the photosynthesis's light-independent phase. In this stage, glucose is synthesized using the NADPH and ATP created during the light stage.

There are three primary phases of the Calvin cycle: carbon fixation, reduction, and regeneration.

In the process of fixing carbon, ribulose-1,5-biphosphate, a CO2 acceptor, combines with three molecules of CO2 to produce two molecules of 3-phosphoglycerate. This reaction is catalyzed by RUBISCO (PGA)

PGA is reduced by NADPH during the reduction stage, and ATP phosphorylates PGA to generate six molecules of glyceraldehyde-3-phosphate (G3P). According to the answer, while the other five molecules of G3P continue in the cycle, one leaves it to be used to create glucose.

The initial five molecules of G3P are rearranged into three molecules of the five-carbon CO2 acceptor known as ribulose-1,5-biphosphate during the third stage, dubbed the regeneration stage (RUBP).

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Actual mass of CO recovered is 99.4g

Balance equation is : SiO2 + 3C    SiC + 2CO

Molar mass of CO is 28.01 g/mol

Moles of CO = given mass/molecular mass = 100/28.1 = 3.55mol

mass = moles of sio2 x molecular mass

Actual mass = 3.55mol of CO x 28 = 99.4g

The amount of matter that makes up an element's atom, or atomic mass. It is expressed as a multiple of 1.992646547 1023 gram, which is equal to one-twelfth of the mass of the carbon-12 atom, which has an atomic mass of 12 units. 1 atomic mass unit (amu) is equal to 1.660539040 1024 grams on this scale. An indicator of an element's atomic mass is the atomic mass unit (AMU or amu). The atomic mass unit (AMU), also called the dalton (Da) or the unified atomic mass unit (u), expresses both atomic and molecular masses. Only 1/1,836 the mass of a proton, 9.1093837015 1031 kg, is the rest mass of an electron. Therefore, compared to a proton or neutron, an electron is thought to be almost massless, and the electron mass

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C9H8O4 + NaOH = C9H7O4Na + H2O, which is the same reaction, is a balanced chemical equation that describes an acid-base reaction that enables you to calculate the moles of aspirin contained in a sample.

Acetylsalicylic acid is simply known by its common name, aspirin. It is a benzoic acid that has had an acylated alcohol (really a phenol) function substituted in the ortho position. As a result, there are two possible reactions that might happen when aspirin and NaOH are combined: the quicker reaction is the deprotonation of the acid function, which results in sodium acetylsalicylate. In fact, several aspirin formulations contain this ingredient.

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The heat that enters or leaves the system is determined by the enthalpy change that takes place during a reaction. whether there is a rise in the system's enthalpy.

Kidney stones are frequently linked to calcium oxalate crystals, which can develop when the body has an excessive amount of oxalate (found in foods like spinach). Severe groin or stomach discomfort, nausea, fever, and problems urinating are all signs of kidney stones.

In healthy adults who consume 800 mg of calcium per day, two to twenty percent of the oxalate they consume is absorbed in their digestive tracts. The most effective moderator of oxalate absorption is calcium.

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Acid has a pH below 7 while water has a pH of 7. A strong acid with a pH of roughly 3, HCl is. Water gets more acidic and loses pH in the range of 4-5 when HCl is added to it.

A substance's pH is a gauge of how basic or acidic it is. It is a measurement of the amount of H+ present in the solution. It is equivalent to the negative logarithm of the concentration of H+ ions mathematically.

A solution is acidic if its pH value is less than 7, and basic if it is greater than 7. Acids have a lower pH because they contain more H+ ions. Strong acid hydrochloric acid has a pH between 2 and 3.

Water has no charge. Water becomes acidic in pH if any acid is introduced. Therefore, if HCl is given to water, the pH of the water will change to 3-5 depending on the acid content.

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And let us address the bottle capacity....and this is given by the product. We know that, 1ml= 10⁻³ L

126,515 × 0.335 L =   42382 .525 L and it is the the bottle capacity.

The number of bottles you need is given by

33500/ 0.355=  9436 Bottles and there are enough caps . The limiting quantity is the beverage and there are  reserve bottles and caps for the breakages and the failed seals that will undoubtedly occur.

Having brewed beer, ginger beer, or other beverages at home (and this is something that it is easy to do, and you get VERY good results). Most of the time, the bottles are the finite resource. You must gather, carefully clean, and disinfect each bottle.

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Answer:

C) -3063J

Explanation:

multiply m, c, and change in T

Option D.  Investigation 4, represents the statement from which investigation is an example of repetition.

Each is a repeated run of your combination of things and stages. Repetition does the replica runs consecutively even as replication does more than one run but throughout identical but special experimental runs. The investigation is a radical search for data, particularly the ones which are hidden or need to be sorted out in a complicated state of affairs. The intention of the research is commonly to decide how or why something befell.

Experimental investigations contain a procedure in which a "honest test" is designed and variables are actively manipulated, managed, and measured which allows you to collect proof to aid or refute a causal courting.

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Disclaimer:- your question is incomplete, please see below for the complete question.

A white solid precipitate is created when silver nitrate (AgNo3) and barium chloride (BaCl2) are combined.

The main distinction between a balanced equation and a net ionic equation is that a balanced equation displays all of the system's reactions together, but a net ionic equation just displays the net reaction that followed the conclusion of a given reaction.

Similar charges repel one another (positive to positive or negative to negative). A neutral item is one that typically has an even mix of positive and negative charges. Negative and positive charges in an item must balance out for static electricity to occur.

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In the mentioned reaction:

Cu²⁺ + e⁻ → Cu ; Cu²⁺ is reduced

Fe → Fe³⁺ + 3e⁻ ; Fe is oxidized

2l⁻ → l₂ + 2e⁻ ; l⁻ is oxidized

2H⁺ + 2e⁻ → H₂ ; H⁺ is reduced

Oxidation is the process of adding oxygen or electronegative elements or removing hydrogen or electropositive elements. According to the electronic concept, oxidation is defined as the process of losing one or more electrons.

Reduction is the process of adding hydrogen or electropositive elements or removing oxygen or electronegative elements. According to the electron concept, reduction is defined as the process of gaining one or more electrons.

For the given problem,

The oxidation number of Cu²⁺decreased from +2 to 0. thus, it is reduced.

The oxidation number of Fe increased from 0 to +3, it is therefore oxidized.

The oxidation number of l⁻  increased from -1 to 0. It is oxidized.

The oxidation number of H⁺ decreased from +1 to 0. It has been reduced.

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Acid will have an increased concentration in someone who is suffocating then suffocating does not affect any body acid

Acid in the body are gastric acid or stomach acid is a digestive fluid formed within the stomach lining and with pH between 1 and 3 gastric acid play a key role in digestion of protein by activating digestive enzyme

And the asphyxiation also called asphyxia or called suffocation is when the body doesn't get enough oxygen and without immediate intervention it can get lead to loss of consciousness or brain injury or death so any acid in the body doesn't affect if someone is suffocating

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The Lewis structure can be used to identify the following traits. Considering one,

H₃N + BF₃ ———> [H₃N—->BF₃]

The valence shell electrons of a molecule are depicted in a highly condensed manner in a Lewis structure. It serves as a visual representation of the electron arrangements surrounding specific atoms in molecules. In bonds involving two atoms, electrons are shown as lines or as "dots" respectively.

A molecule's Lewis structure reveals how many valence electrons are attached to each atom. The Lewis structure of a molecule can be used to infer a lot of significant information. These details include, among others;

Each atom in the molecule has a certain number of valence electrons attached to its valence shell.

The molecule's type of bonding

Whether the atoms in the molecule follow the octet rule or not

Potential resonance configurations that the molecule might have

whether or not atoms in the molecule have lone pairs of electrons.

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Ch3ho has a concentration (m) of 1.589 mol/dm3 in a solution.

Given our parameters, 230 ml per liter of solution and a mole of solutes equal?

that: mass/molar mass = moles of solutes

mass = 11.7g.

thus the formula for CH3OH's molar mass is C(12)+H(1*3) +O(16)+1 =32g.

11.7g/32g Equals 0.365 moles of solutes.

Great, now that we have the moles, we can now enjoy the molarity (concentration)

Molarity is equal to 0.365mol/230*10-3, which is 0.365mol/0.230L, or 1.589mol/dm3.

The formula for calculating molarity is molarity = number of moles of solute. litres of the solution. Since the volume of the solution will be measured in litres and the quantity of moles of solute is measured in mol. So, mol L – 1 is the unit of molarity.

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When parts of the upper mantle collide with each other, the force causes changes on the surface like volcanoes and fractures  the collision not impact the asthenosphere because asthenosphere is the plastic and brittle

The asthenosphere is the unique to our planet and earth is the only planet in the solar system with an asthenosphere and if planet doesn't have water this means it doesn't have an asthenosphere and the asthenosphere play an important role in plate tectonic movement and asthenosphere is situated underneath the solid lithosphere and the asthenosphere is ductile and deform easily compared to the overlying lithosphere so the collision not impact the asthenosphere because  asthenosphere is the plastic and brittle

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Option B. The ionization energy increases because the ratio of protons to electrons increases. explains the change in ionization energy that occurs between removing the first and second electrons from an atom.

The ionization energy is the degree of the functionality of an element to go into chemical reactions requiring ion formation or donation of electrons. it is also usually associated with the nature of the chemical bonding within the compounds shaped by the factors. See additionally binding strength; electron affinity.

Ionization energy is superb for neutral atoms, meaning that ionization is an endothermic system. more or less speaking, the nearer the outermost electrons are to the nucleus of the atom, the higher the atom's ionization electricity. In physics, ionization power is typically expressed in electronvolts (eV) or joules (J).

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Pbcl2 precipitate when 275 ml of a 0.134 m solution of pb(no3)2 is added to 125 ml of 0.0339 m solution of nacl? the ksp of pbcl2 is 1.17e-5.

Given that,

The volume of NaCl = 125 ml

Concentration of NaCl = 0.0339 m

The volume of Pb(NO3)2 = 275 ml

Concentration of Pb(NO3)2 = 0.134 m

K(eq) = 1.17 × 10(-5) --------(1)

Total volume = 275 + 125 = 400 ml

Pb(NO3)2 ------- Pb(+2) + 2 NO3(-)

at t = 0 0.134 0 0

at t = t 0 0.134 0.134

NaCl -------- Na(+) + Cl(+)

at t = 0 0. 0339 0 0

at t = t 0 0.0339 0.0339

PbCl2 ---------- Pb(+2) + 2Cl(-)

Q(sp) = [Pb+2] [ Cl-]^2

By substituting the values of conc. of all the ions, we get Pbcl2 precipitate when 275 ml of a 0.134 m solution of pb(no3)2 is added to 125 ml of 0.0339 m solution of nacl? the ksp of pbcl2 is 1.17e-5.

= (275 × 0.134/ 400) (125 × 0.0339/400)^2

= 9.8 × 10(-6)

As we noticed that, Ksp > Qsp

Therefore, PbCl2 will not precipitate.

Thus, we concluded that the Pbcl2 precipitate when 275 ml of a 0.134 m solution of pb(no3)2 is added to 125 ml of 0.0339 m solution of nacl? the ksp of pbcl2 is 1.17e-5.

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Calcium has approximately 20.439% of mass in calcium sulphate compound.

Calcium sulphate is the inorganic compound with the formula CaSO4 and related hydrates. in the form of anhydrite, it is used as a dessicant. One particular hydrate is better known as plaster of paris and another occurs naturallly as the mineral gypsum. It has many uses in the industry. All forms are white solids that are poorly soluble in water. Calcium sulfate causes permanent hardness in water.

The compounds exist in three level of hydration corresponding to different crystallographic structure and to minerals.

a. CaSO4 is an anhydrous state. The structure is related to that of zirconium orthosilicate.

b. CaSO4.H2O Dihydrate

c. CaSO4.1/2H2O Hemihydrate.

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The amount of 0.100 M HCl that 400 mg of Tumsr can neutralize, measured in mL, is 32 mL.

Chemical A chemical reaction's reactants and products are studied quantitatively in stoichiometry. The Greek words "stoikhein" (which means element) and "metron" (which means measure) are the roots of the English word "stoichiometry."

CaCO3 makes up 40 percent of Tumsr. As a result, 400 mg of Tumsr will have

400 x 40/100 = 160 mg CaCO3

According to the reaction's equation:

CaCO₃ +  2HCl  →  CaCl₂ + H₂O +  CO₂(carbondioxide)

Mole ratio = 1:2

Mole of CaCO₃ = 0.16g/100 = 0.0016 moles

Equivalent mole of HCl = 0.0016 x 2 = 0.0032 moles

Volume of 0.0032 mole= 0.0032/0.1

Volume of 0.0032 mole = 32 ml.

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On a solid media, chromatography requires solvent separation. Different boiling points are used in distillation. A liquid is removed through evaporation from a solution to leave a solid behind. Filtration separates different-sized particles.

Chromatography is a method used in laboratories to separate mixtures into their constituent parts. The combination is dissolved in a liquid solvent known as the mobile phase, which transports it through a system where a substance known as the stationary phase is fixed.

Chromatography paper is another name for filter paper. Paper for chromatography is entirely white. Chemical analysis filter paper, quality filter paper, ashless filter paper, air filter paper, engine oil filter paper, fuel filter paper, etc.

The basis for gel filtration chromatography is the distinct migration of dissolved solutes through gels with predetermined-sized holes.

Thus, A column of insoluble but highly hydrated polymers, such as dextran, agarose, or polyacrylamide, is used in gel filtering or gel-permeation chromatography.

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The percent yield will be 103 %

Mass of potassium bicarbonate = 1.00 g

Molar mass of potassium bicarbonate = 100.115 g/mol

Mass of potassium carbonate = 0.710 g

Molar mass of potassium bicarbonate = 138.205 g/mol

Calculated yield = 0.690 g

Percent yield = ?

Calculated yield is given, if not you can find out by following steps:

Write the balanced chemical equation

    2KHCO₃ →  K₂CO₃ + H₂O + CO₂

Hence 2 moles of KHCO₃ decompose to produce 1 mole of K₂CO₃

This means that 2 × 100.115 g of KHCO₃ will produce 138.205 g of K₂CO₃

    Calculate for 1 g = 138.205  / 200.23

    Calculate for 1 g = 0.690 g

This means that 1 g of KHCO₃ will produce 0.690 g of K₂CO₃

Now calculate % yield

    % yield = (actual yield / calculated yield)

    % yield = (0.710 / 0.690) 100

    % yield = 1.029 * 100

    % yield = 103 %

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