How many moles of helium gas occupy 13.5 LL at 153 KK and 3.80 atmatm?

Q: Arrange the various regions of the electromagnetic spectrum in the correct order, in order of…

A: Wavelength range of infrared electromagnetic spectrum  = 700 nm - 1000 μM Wavelength range of Ultra…

Q: Describe the processing of titanium dioxide nanoparticles include reference

A: Answer - Titanium dioxide nanoparticles, also called ultrafine titanium dioxide or nanocrystalline…

Q: B. Calculate the molality of a water solution if the freezing point is: 6. -9.3°C 7. -27.9°C 8.…

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Q: A. Hydrocarbons Alkanes 1. CH4 (methane) Projection Drawing: Perspective Drawing: H. H-C-H H. a.…

A: Alkane is saturated hydrocarbon. Alkane have sp3 hydrocarbon . Alkane have tetrahedral geometry and…

Q: Identify the reducing agent, oxidizing agent, the atom or ion that is oxidized, and the atom or ion…

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Q: B. Calculate the molality of a water solution if the freezing point is: 6. -9.3°C 7. -27.9°C

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Q: With the aid of diagrams Explain how you would apply crystal field theory to explain why the five…

A: Crystal field splitting energy is defined as energy difference between two set of orbitals.

Q: What happens when a hydrogen atom is added or removed from BTB? Take note of the colours.

A: Bromothymol blue solution is blue in color at pH > 8, yellow green to green in the range 6.1<…

Q: The mathematical equation that linearly relates the concentration of the reactant against time is…

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Q: give thumbs up if all are answered correctly.    1. Balance the following chemical equations.…

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Q: If an operator 14  m from a small source is exposed to 3.0 units of radiation, what will be the…

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Q: The molar solubility of is MgCO3 6.82 x 10 mol/L. Calculate the KSP value for MgCO, + C03(aq) -2…

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Q: Which of the following is the correct equilibrium law for the reaction below? 4Cr(s) + 3CC,(@ =…

A: In this question we have to write equilibrium constant expression for the given reaction.

Q: a. Q4. Drawa schematic diagram to differentiate cyclohexanone, acetone and benzaldehyde using the…

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Q: Zine oxide ointment APF of zine oxide mixed with 85g of simple ointment, you repuire m ointment with…

A: Given :  Composition of 100 gm Zinc oxide APF ointment = 15 gm Zinc oxide + 85 gm simple ointment…

Q: The absorbance of compound A was measured in a 1.00 cm cuvette at 238 nm. A 3.96 x 10* M solution of…

A: Since you have asked a multiple sub-part question, we will solve first three sub-parts for you. For…

Q: What is the effect of adding the acid before Kl?

A: Acid is substance which release hydrogen ions when dissolved in water.

Q: Chloride ions are added to the Ag|Ag half-cell of the cell Ag|Agl|CuCu to precipitate AGCI (s). The…

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Q: Write the equilibrium expression for each of the following reactions: N2(g) + 3 H2 (g) ↔ 2NH3 (g)…

A: During writing equilibrium expression , the each concentration terms is raised by respective powers…

Q: (C). Organic peroxides exhibit as characteristic functional group oxygen-oxygen single covalent bond…

A: This question belong to organic reaction mechanism. Here there are no difference in…

Q: How would you name the compound shown below? Choose the BEST answer. H. H. H H. | | | Н— С—С— с— с…

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Q: Group work H.W) 20.8 kJ of heat energy is required to raise the temperature of 2 kg of lead from…

A: The mass of lead is = 2 kg The increase in the temperature of the lead is = (96-16)oC = 80oC The…

Q: Cyclohexane vs Benzene

A: Cyclohexane and benzene, both are cyclic compounds having 6 C atoms. However, the difference lies in…

Q: In part of the decay series of radium-226, polonium-218 decays to lead-214, which then decays to…

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Q: What is it called when the final temperature of your Solid (Tin) and the water are equal?

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Q: According to Arrhenius a base is a species that in aqueous solution A) increases the concentration…

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Q: H. H H. H. H-C С — С—С—ОН H. H Н H. H. エ エ エ エーUーエ エーUーエ エーローエ エーリーエ

A:

Q: For a certain reaction changeH֯ =-83.5 kJ and changeSͦ =-148 j/K. If the values of changeH֯ and…

A: Answer: Given data: ∆H°=-83.5kJ∆H°=-83500kJ ∆S°=-148J/K

Q: For each of the following reactions, identify the acid and the base. Also indicate which acid- base…

A: The species which donates a pairs of electrons is called Lewis base and the species which accept a…

Q: Calculate the pH of a 0.174 M KCIO solution. Remember that only the decimal places in a pH represent…

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Q: 1. What is the percent by mass of 6 g of copper (II) sulfate dissolved in 84 g of water? 2. A…

A: In the question given above we need to find concentration terms %m/m and %v/v. I have solved only…

Q: Which statement describes equilibrium in a chemical reaction? A Equilibrium occurs when there are…

A: Equilibrium reactions are those reactions in which there is no change in concentrations of Reactants…

Q: Sulfur-35 is a radioactive isotope that decays through beta emission. The product of this reaction…

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Q: The chemist, Schrödinger, has the following major contribution. (A) An electric current produces new…

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Q: All of the following statements are false for the spontaneous combustion of hydrogen gas at 400 K…

A: Given: Spontaneous combustion of hydrogen gas at 400 K  For a reaction to be spontaneous, ∆G < 0…

Q: H.W) 1013.25 J of heat energy is supplied to 1mol of NH3 (2) which is initially volume is 4L at…

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Q: H.W) 1013.25 J of heat energy is supplied to 1mol of NH3 ( which is initially volume is 4L at…

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Q: When (3.4100x10^2) Joules of heat are added to a sample, the temperature increases from…

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Q: Calculate the standard reaction enthalpy for the reaction between CIF3 and O2. 2CIF3(g) + 202(g) →…

A: The enthalpy change of any reaction is defined as the difference between the enthalpy of the…

Q: Flame Atomic Absorption Spectroscopy (FAAS) method is selected due to its wide applicability for…

A: To discuss the safety and precautions during the FAAS experiment.

Q: 18/8 stainless steel is made up of 18% (m/m) chromium and 8% (m/m) nickel in iron. What mass of…

A: The mass of chromium can be calculated as follows

Q: Which of the following statements are true for Beers Law? 1. Absorbance increases as concentration…

A: ••According to Beer's law , absorbance is directly  proportional to path length through the sample…

Q: A solution of sodium thiosulfate was standardized by dissolving 0.2450 g of KIO3 (214.00 g/mol) in…

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Q: Explain why heat is needed in the hydrolysis of esters

A: Hydrolysis of esters is a reaction with water catalyzed by either an acid or a base.

Q: Chemistry A student measured concentrations of potassium ions in the solutions using flame…

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Q: 2. Identify the type of reaction depicted: Phz AWINCH CH 80 °C HC-CH, + "P DMSO dis HH OC. Ph, +H…

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Q: 5. a) When the molecule below is treated with HCI, thế curved arrow formalism to draw a mechanism…

A: Carbocation has tendency to undergoes rearrangement from less stable carbocation to more stable…

Q: Br + ClO + H* → Br, + CI + H,O Sn²+ + VO, + H* → Sn* + v²* + H,O 3-

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Q: BSelec1 the two reactants needed to mate the produc. A) B) D) E) OH G) H)

A: From the given reaction we can easily seen that we have to prepare a amide .so we can choose a acid…

Q: 2. Barbituric acid, HC,H,N,O, a weak organic acid used to manufacture hypnotic drugs and some…

A: Here the concentration of barbituric acid is 0.25M and Ka of barbituric acid is 9.8×10^-5. We have…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.