Perchloric acid monohydrate is added to distilled water to give a concentration of 6.2 mg/l. if water is supplied at a rate of 8 mgal/day, 301 lb pounds of perchloric acid monohydrate will be required per day.
What is perchloric acid used for?
Perchloric acid is used to split potassium from sodium, and in lots of laboratory assessments and processes. Uses for the salts of perchloric acid consist of explosives and plating metals. Perchloric acid may also explode, and it decomposes on heating generating poisonous and corrosive fumes.
Is perchloric acid safe?
Perchloric acid is one of the most powerful mineral acids acknowledged and therefore may be very unfavourable to the skin, eyes and mucus membranes on contact. Inhalation of the vapours also can result in extreme harm to the respiration system.
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which of the following molecules can form hydrogen bonds? which of the following molecules can form hydrogen bonds? ch4 h2o nah hi bh3
The following molecules can form hydrogen bonds. the following molecules can form hydrogen bonds is H₂O.
Hydrogen bond is a type of bond in which attractive force between the hydrogen atom that is covalently bonded with the more electronegative atom such as a N, O and F atom . so, from the given compound it is clear that the molecules which can form hydrogen bond is only water. it arise because of the dipole dipole interaction. there are two types of hydrogen bonding : intramolecular hydrogen bonding and the intermolecular hydrogen bonding.
Thus, The following molecules can form hydrogen bonds. the following molecules can form hydrogen bonds is H₂O.
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What is the estimated effective nuclear charge, zeff, experienced by an electron in a 3p orbital of a chlorine atom?.
Therefore, +17 + (-10) = +7 is the effective nuclear charge. Simply counting the number of electrons in the outer shell—without applying any charges—will get the same result. That would be the 3s2 3p5 for Cl, where 2 + 5 = 7.
Use the formula Zeff = Z - S, where Z is the atomic number and S is the number of shielding electrons, to calculate the effective nuclear charge of an atom. By deducting the number of valence electrons from the total number of electrons in the atom or ion, one can calculate the number of shielding electrons. Effective nuclear charge (Zeff) is an atom's net positive charge that attracts an electron. The closest estimate of this net charge is. Effective nuclear charge (Zeff) is calculated as Z minus Zcore.
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Is work done whenever you hold a heavy object for a long time?
No, work is not done whenever you hold a heavy object for a long time
What is work done ?The result of a force's displacement and its component of force exerted by the object in the direction of displacement is what is known as the force's work. When we push a block with some force, the body moves quickly and work is completed.
No work, as that term is used here, is done until the object is moved in some way and a component of the force travels along the path that the object is moved. Because there is no displacement when holding a heavy object still, energy is not transferred to it.Learn more about Work done here:
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how does the atomic structure of a material impact its properties and the way that material functions (I need a paragraph)
Answer:
answer below
Explanation:
The atomic structure primarily affects the chemical, physical, thermal, electrical, magnetic, and optical properties. The properties of a material offer clues as to the structure of the material. The strength of metals suggests that these atoms are held together by strong bonds.
When the rate of reaction of bleach and dye are studied which reactant is in excess?.
In the reaction between bleach and dye, the bleach was excess relative to the dye.
what are the properties of bleach ?bleach is used for bleaching of cotton and linen in textile industry and also used as bleaching wood pulp in paper industry, bleaching washed clothes in laundry.
It is the main constituent of a solution which constitute ~3-6% sodium hypochlorite (NaOCl), is a mixed with small amounts of sodium hydroxide, hydrogen peroxide, and calcium hypochlorite.
Chlorine bleach is a type of base and especially good at removing stains and dyes.
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Calculate the amount of heat released when one bottle (250 g) of ethanol is cooled from 45°C to 40°C. The specific heat of ethanol is 2.45 J/g°C
2054 J
-1533 J
-3063 J
4063 J
Answer:
C) -3063J
Explanation:
multiply m, c, and change in T
what is the concentration of a dextrose solution prepared by diluting 17 ml of a 3.0 m dextrose solution to 25 ml using a 25 ml volumetric flask?
The concentration of a dextrose solution prepared by diluting 17 ml of a 3.0 m dextrose solution to 25 ml using a 25 ml volumetric flask is 2.04 m.
This problem is solved by using the concept of concentration and volume.
As we know that,
C1 × V1 = C2 × V2
From the problem,
The initial concentration of dextrose C1 = 3.0 m
The initial volume of dextrose V1 = 17 ml.
The initial volume of dextrose V2 = 25 ml.
We have to find the final concentration of dextrose.
Calculation of final concentration of dextroseBy substituting all the values, we get
3.0 × 17 ml = C2 × 25 ml
51 = C2 × 25 ml
C2 = 51 / 25
C2 = 2.04 m
Thus, we concluded that the concentration of a dextrose solution prepared by diluting 17 ml of a 3.0 m dextrose solution to 25 ml using a 25 ml volumetric flask is 2.04 m.
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the reaction of benzaldehyde with acetone and sodium hydroxide produces choose... this is an example of choose... reaction.
The reaction of benzaldehyde with acetone and sodium hydroxide produces this is an example of mixed aldol condensation reaction.
The reaction of benzaldehyde with acetone and sodium hydroxide produces dibenzalacetone. . this is an example of mixed aldol condensation. in mixed aldol condensation molecule of an aldehyde react ketone to form dibenzalacetone. the more reactive is the aldehyde as compared to that of ketone. thats why rapidly reacts with anion of ketone. the formula of dibenzalacetone C₁₇H₁₄O. The two benzaldehyde molecules react with acetone and form dibenzalacetone.
Thus, The reaction of benzaldehyde with acetone and sodium hydroxide produces this is an example of mixed aldol condensation reaction.
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draw the lewis structure of co2. what is the shape of the molecule? is it polar or nonpolar? what types of molecules would you expect to dissolve in co2?
The structure of CO2 is linear as it has two oxygen atoms on both side of carbon, it nullifies the polar charge and makes it a nonpolar molecule.
According to Lewis structure we know that it denotes the number of electrons donated or shared to complete the octane rule (all atoms must have 8 electrons in the outer shell).
Lewis's structure gives us the idea of whether a compound is basic or acidic in nature in terms of the electrons shared. In the given condition, for CO2 the Lewis structure is shown below.
If we draw the Lewis structure for CO2, we will get a linear structure as it would contain two oxygen atoms on both side of carbon. As it contains two carbon atoms, it shares a covalent bond with carbon.
As there are two oxygen atoms on both side of carbon and being equally electronegative it cancels out the charges and makes it a nonpolar molecule.
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When three molecules of carbon dioxide (co2) react with three molecules of rubp during the calvin cycle, six molecules of the sugar g3p are produced. One g3p molecule exits the calvin cycle during phase 2. What happens to the other five g3p molecules?.
Three molecules of ribulose-1,5-biphosphate are generated from the remaining five G3P molecules.
What is Calvin cycle?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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PLEASE HELP!!!! I am so behind on school work and need to get my grades up quick PLEASE!! Which statements are observations that Darwin made on his voyage?
There was a fossil of a large, extinct, armored animal that looked like a modern-day armadillo.
There were runaway horses that had formed wild herds in the North American plains.,
The Galapagos Islands had slightly different tortoises on each of the islands.
He observed that the flightless dodo bird was still alive and not extinct.
The Galapagos Islands had slightly different tortoises on each of the islands is an observation that Darwin made on his voyage (Option C).
What is the evolutionary Darwin theory?The evolutionary Darwin theory is a model proposed by Charles darwin about how species change (evolve) across time as a function of environmental characteristics and the process of natural selection.
Therefore, with this data, we can see that the evolutionary Darwin theory is based on different observations such as tortoises in the Galapagos islands which led to understanding the meaning of the evolution of the species.
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What volume of 0. 220 m ethanol solution contains each of the following number of moles of ethanol?.
Each of the following number of moles of ethanol is present in a 13.2 mL volume of 0. 220 m ethanol solution.
Why do we do it?
The notion is that the number of moles of solute contained in 1L=10^3mL of solution may be calculated from the molarity of the solution. In our situation, a solution of ethanol with a concentration of 0.220 M will have 0.220 moles of ethanol per 10^3 mL of solution. This suggests that 2.90 10 3 moles of ethanol will be present in the mixture of 2.90 ×10^3 moles of ethanol in a 10^3 mL solution and 0.22 moles of ethanol in a 13.2 mL solution.
Describe ethanol.A renewable fuel called ethanol is produced from corn and other plant components. The United States uses ethanol extensively, and more than 98% of gasoline contains some ethanol.
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Write a balanced chemical equation that describes an acid-base reaction that would allow you to determine the moles of aspirin present in a sample.
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.
Describe aspirin.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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when barium chloride is allowed to react with silver nitrate to give barium nitrate and silver chloride, what are the coefficients for the balanced equation and what type of reaction is this?
A white solid precipitate is created when silver nitrate (AgNo3) and barium chloride (BaCl2) are combined.
What distinguishes a balanced equation from an ionic equation?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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16. a domain is atomic if elements of the domain is considered units. a. different b. indivisible c. constant d. divisible
A domain is atomic if elements of the domain is considered indivisible units that is cannot be divided in parts.
What is domain and at what condition is the domain is atomic specifically?A domain is atomic only when each nonzero and non- unit factors are irreducible and non dividing.Here the question is asked for when a domain is atomic and when a domain can not be atomic.And when the elements of the domain is considered units and which unit for the domain to be remain atomic.If every nonzero and along with non unit factor can be expressed in the form of product of irreducible elements then domain is atomic.Hence the answer would be indivisible , that is a domain is atomic if elements of the domain is considered indivisible units.Not constant , not divisible but only when indivisible then only domain will be atomic.To know more about domain visit:
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The isotope Z-22 has an abundance of 35% while Z-24 has an abundance of 65%. What is the average atomic mass of element Z?
The isotope Z-22 has an abundance of 35% while Z-24 has an abundance of 65%. the average atomic mass of element Z is 23.3 amu.
Z- 22 ,percent abundance = 35 %
= 0.35
Z - 24 , percent abundance = 65 %
= 0.65
average atomic mass = (mass × percent abundance + mass × percent
abundance )
= (22 ×0.35 + 24 × 0.65)
= 7.7 + 15.6
= 23.3 amu
Thus, The isotope Z-22 has an abundance of 35% while Z-24 has an abundance of 65%. the average atomic mass of element Z is 23.3 amu.
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The antacid component of tumsris calcium carbonate. Assume tumsris 40. 0 percent caco3by mass. If we have 400. Mg of tumsrhow many ml of 0. 100 m hcl can we neutralize? express your answer in ml.
The amount of 0.100 M HCl that 400 mg of Tumsr can neutralize, measured in mL, is 32 mL.
What exactly is stoichiometry?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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A boy is hit with a piece of cake. The cake has a mass of
0.56 kg and hit the boy at a speed of 17 m/s. What kinetic
energy did the piece of cake have?
If 3. 0 g of nh3 reacts with 5. 0 g of hcl, what is the limiting reactant? nh3(g) + hcl(g) --> nh4cl(s).
HCl (g)+ NH
3
(g) → NH
4
Cl (s)
write the equations that represent the first and second ionization steps for selenous acid (h2seo3) in water.
First ionization reaction: -
H₂SeO₄(aq) + H₂O(l) → H₃O⁺(aq) + HSeO₄⁻(aq)
Second ionization reaction: -
HSeO₄⁻(aq) + H₂O(l) → H₃O⁺(aq) + SeO₄⁻²(aq)
Selenic acid is a diprotic and a strong acid with the formula: H₂SeO₄.
When it reacts to water, it releases two protons in two ionizations.
Finally, it gives hydronium to the medium.
H₂SeO₄(aq) + H₂O(l) → H₃O⁺(aq) + HSeO₄⁻(aq)
HSeO₄⁻(aq) + H₂O(l) → H₃O⁺(aq) + SeO₄⁻²(aq)
According to the given condition the selenous acid is a diprotic acid (two hydrogen ions) we can identify two ionization reactions, the first one, showing up the dissociation of the first hydrogen to yield hydrogen selenic ions and the second one, showing up the dissociation of the hydrogen sulfate ions to hydrogen ions and selenic ions.
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How does the enthalpy change of this reaction and your knowledge of molecular structure inform your understanding of why excess oxalate ions in the body can lead to kidney stones but excess chloride ions will not?.
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.
What does urine containing calcium oxalate mean?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.
Does calcium promote absorption of oxalate?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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The following balanced chemical equation
represents a chemical system at equilibrium: K/U
C2H4 1g2 1 Br2 1g2mC2H4Br2 1g2
colourless brown colourless
(a) What visual changes will you see at equilibrium?
(b) What is occurring at the molecular level?
(c) Is the equilibrium static or dynamic?
a) The brown color of bromine is discharged
b) There is an addition reaction occurring
c) The equilibrium that occur here is a dynamic equilibrium
What is equilibrium?
We say that a system is in a state of equilibrium when the rate of the forward reaction is equal to the rate of the reverse reaction. In this case, we can say that the system is in a state of dynamic equilibrium.
a) We know that as the bromine is added to the ethene there would be the decolorization of the bromine water.
b) At the molecular level, the bromine is being added to the double bond in the alkene and a vicinal dihalide is produced.
c) The equilibrium is dynamic.
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explain how a difference in temperature effects the pressure of oxygen gas, the volume of water displaced and the experimental molar volume of o2 gas.
A gas's volume is inversely related to its pressure and directly related to both its temperature and its volume. The volume of a gas is thought to be directly proportional to its absolute temperature according to Charles' law.
Explain Charle's law.The experimental gas law known as Charles' law, commonly referred to as the law of volumes, illustrates how gases tend to expand when heated. Charles's law can now be expressed as follows:
The Kelvin temperature and the volume will be directly proportional when the pressure on a sample of a dry gas is kept constant.
This direct proportional relationship can be expressed as follows:
V ∝T
It follows that:
[tex]\frac{V}{T} = k[/tex]
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The map below shows Mach's route to the pool. Mich left his house and walked to Javier's house. It took him 12 minutes. Then, Mitch and Javier walked to Andrew's house. It took them 6 minutes.
Finally the 3 boys walked to the pool in 2 minutes. What was Mach's average speed for his entire journey?
100%
A
B
Andrew
C
D
100 m
500 m
7 m/min
60 min
Javier
800 m
Compare and contrast filtration and chromatography
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.
What is chromatography ?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 cd 2 ion forms a tetrahedral complex with bromide ions. calculate the equilibrium constant for the formation of the complex, given that: if the cadmium bromide complex is dissolved in water to make a solution of 1.00 m, once equilibrium has been reached the concentration of free (uncomplexed) cadmium is 0.0593 m.
the cd 2 ion forms a tetrahedral complex with bromide ions Kf = 5.01×103 Formation equilibrium of [CdBr4]2- is Cd2+(aq) + 4Br-(aq) <-------> CdBr42-(aq) Dissociation Equilibrium of CdBr42- is CdBr42-(aq.
What is the Difference Between Square Planar and Tetrahedral Complexes?
Tetrahedral complexes are coordination complexes that have a central metal atom surrounded by four constituent atoms in corners of a tetrahedron.
The structure of square planar and tetrahedral complexes, as well as the characteristics of transition metal complexes, are all well described by crystal field theory. The square planar complexes have a four-tiered crystal field diagram, whereas the tetrahedral complexes have a two-tiered crystal field diagram, which is the main distinction between the two types of complexes.
Additionally, transition metals with electron configurations that finish in d8 have a propensity to create square planar complexes, whereas metals with d0 and d10 have a propensity to form tetrahedral complexes.
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2. Balance the equations and identify the type of reaction. (48 points total: 6 points per question=2
points per reaction type and 4 points for the coefficients)
a) 2Na₂N → 2Na + N₂ reaction type combination reaction.
b) H₃PO₄ +3KOH → K₃PO₄ + 3H₂O reaction type double-Replacement Reaction.
c) N₂ + 3H₂ → 2NH₃ reaction type combination reaction.
d) 2H₂O₂ → O₂ + 2H₂O reaction type combination reaction.
e) Zn + 2HCl → ZnCl₂ + H₂ reaction type displacement reaction.
f) C₂H₆ + 7O₂ → 2CO₂ + 3H₂O reaction type combustion reaction.
g) CuCl₂ + H₂S → CuS + 2HCl reaction type double displacement reaction.
How is an equation balanced written?The reaction arrow's left and right sides of a balanced equation have an equal number of each type of atom. The products go on the right side of the arrow when writing a balanced equation, and the reactants go on the left.
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A 0. 600 g sample of a compound of arsenic and oxygen was found to contain 0. 454 g of arsenic. What is the empirical formula of the compound?.
A 0. 600 g sample of a compound of arsenic and oxygen was found to contain 0. 454 g of arsenic. The empirical formula of a compound is As₂O₃.
The mass of a oxygen in the compound is
Mass of O=(Sample mass-Mass of As)
=(0.600-0.454)g
=0.146 g
The atomic mass of arsenic(As) is 75 g/mol and of oxygen(O) is 16 g/mol. Hence moles of oxygen and arsenic are
Moles of As=0.454 g×(1 mol/78 g)
moles of As=0.006053 mol
Moles of O=0.146 g×(1 mol/16 g)
moles of O=0.009125 mol
Divide both moles by 0.006053 mol
moles of As=(0.006053/0.006053)=1
moles of O=(0.009125/0.006053)=1.508≈1.5
Since we cannot take fractional moles in a compound. Hence multiply by 2 to both values of moles
moles of As=(1×2)=2
moles of O=(1.5×2)=3
Since 2 and 3 are values in the subscript of the As and O. Hence, the empirical formula is As₂O₃.
Therefore, the empirical formula of a compound is As₂O₃.
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which of the ions that you studied underwent hydrolysis? explain whether or not your results were as expected (i.e. acidic/basic/neutral solution).
Hydrolysis can happen to both cations and anions, however not all ions react in this way. Both the free cation and the free anion are created during the dissolution of an ionic salt in water.
NO3 2 will it undergo hydrolysis?The salt of the powerful acid (HNO3) and the powerful base (Ba(OH)2) is barium nitrate (Ba(NO3)2). Strong acids and strong bases do not hydrolyze in aqueous solution when their salts are present. In aqueous solution, barium nitrate (Ba(NO3)2) does not hydrolyze as a result.
What is a good illustration of a hydrolysis reaction?Some instances of hydrolysis include dissolving a weak acid or base salt in water or dissolving sulfuric acid in water, which results in the formation of hydronium and bisulfate compounds. Proteins, lipids, and complex carbohydrates in diet are also broken down via hydrolysis.
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which would have a greater effective nuclear charge value, the valence electron of an ne atom or the valence electron of an na atom?
Answer:
na atom
Explanation:
which is sodium because it has 11protons -10 electrons =+1.Hence the valency of sodium is 1
