At the equivalence point of a titration reaction: a analyte present in excess b titrant present in excess c both the analyte and titrant present in excess d neither the analyte and titrant present in excess e yield is 50%

Q: 2 (g) + 3H2 (g)  2NH3 (g) ΔrS = - 201 J K−1mol−1 ΔrH = - 99.3 kJ mol-1 a)    Calculate the ΔrG…

A: The balanced equation is: N2(g) + 3H2(g) ⇌ 2NH3(g)  ∆rS = - 201 J.mol-1.K-1 or - 0.201 kJ.mol-1.K-1…

Q: A gas mixture called Heliox, 6.11% O2 and 93.89% He by mass, is used in scuba tanks for descents…

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Q: The copper concentration of an unknown water sample was analyzed by flame absorption spectroscopy…

A: #(i): The linear regression equation for the absorbance versus copper concentration (μg/mL) is Y =…

Q: 2) Consider a water sample in a closed system with Cr,co3=8x10-4 M and pH=8. a) What is the…

A: Given: CT,CO3=8×10-4 Minitial pH=8

Q: ▾ Part A For the following systems at equilibrium A: 2NOCI(g) B: H₂(g) + I2(g) = 2HI(g) classify…

A: Part A:     Following systems at equilibrium are :    A: 2NOCI(g) <====> 2NO(g) + Cl2(g) Here…

Q: When a 3.00 g sample of RbBr is dissolved in water in a calorimeter that has a total heat capacity…

A: First we need to calculate the heat using heat capacity and temperature change.  Then we need to…

Q: ily has a mixture of 4 compounds that they want to separate. All 4 compounds appear as white solid…

A: We are given 4 different compounds (all white powders) to separate.  Since compounds#1 and 4 have…

Q: Calculate the pH of a 3.11 M solution of KA given that  for the acid:  HA Ka = 4.21⋅10−44.21⋅10-4

A: A solution of 3.11 M KA . The Ka for HA acid is 4.21 × 10-4 .We have to calculate the pH of the…

Q: Figures below show the graphite tube and the schematic heating cycle profile for graphite furnace…

A: Graphite furnace atomic absorption spectroscopy (GF-AAS) is also known as Electrothermal Atomic…

Q: An aqueous solution is prepared to be 0.394 M in sodium acetylsalicylate and 0.283 M in benzoic…

A: Given, Concentration of Sodium acetylsalicylate = 0.394 M Concentration of benzoic acid = 0.283 M…

Q: Select all the following statements that are correct. X 8 X 8x X = Cl or Br 2 A. Compound 1 will…

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Q: 45. Alclometasone dipropionate (ACLO- VATE) ointment contains 0.05% w/w of the drug in 15-g and 45-g…

A: Here we are required to find the difference in Mass of  the drug in tube.

Q: For sulfate experiment, unknown was dissolved in 200mL of water. A careless student added only 100…

A: If the concentration of solute is greater than the maximum possible concentration, a precipitate…

Q: 1. If the reaction below is initially at equilibrium, and then each of the following changes are…

A: Given reaction : H2 (g)  + Cl2 (g) →2HCl (g)

Q: A scuba diver releases a balloon containing 153 L of helium attached to a tray of artifacts at an…

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Q: Calcium-45 has a half-life of 162.61 days. If 4 mg of this isotope remains after 300 days, what is…

A: Radioactive decay follows first-order kinetics. The half-life of the first-order reaction does not…

Q: PhCH₂Cl + LDA B 3 2 1 1 -A B 2 trans- PhHC=CHCH3 -A [Choose] [Choose ] [Choose ] [Choose C D 3 A B O…

A: PhCH2Cl produces carbene intermediate when it reacts with Lithium diisopropylamine(LDA). The…

Q: Given the length and width as 750 mm and 660 mm. What should be the depth of a rectangular well in…

A: First we need to convert the given volume from cubic decimeters to cubic millimetres because length…

Q: Where did the 180 come from

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Q: Predict the electron pair geometry and the molecular structure of each of the following molecules or…

A: Lewis’s structure: Lewis’s bonding theory is based on the octet rule. The Lewis structure is a…

Q: Below are some common interferences that may be encountered in atomic absorption spectroscopy: (i)…

A: Chemical interference in atomic absorption spectroscopy

Q: In one demonstration of this reaction, 42.00  mL of H2 are collected over water at 25°C. Atmospheric…

A: Given : V = 42.00 mL             T = 298 K          P = 748 mmHg  Tip : by using ideal gas equation…

Q: Does doubling the concentration of an alkylhalide and maintaining the alkoxide concentration double…

A: Given that, the alkoxide (RO-) reaction with alkyl halide (R'-X). We have to answers What happened…

Q: What is the total pressure of this system at 179°C? Temperature Pressure of 1,2-propanediol…

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Q: How many milliliters of 0.837 M H2SO 4 would be required to exactly neutralize 699 mL of 0.532 M…

A: H2SO4 is an acid whereas NaOH is a base.

Q: Examine the reaction/mechanism. Select all the statements that are correct. 000 LOH + H-CI د COH₂ 1…

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Q: Using the following choices supply the missing components in the given table. OCH 3 a I VI N3 N3 a…

A: In an organic reaction solvent and temperature helps to decide whether it would follow unimolecular…

Q: 200

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Q: 3.65 g3.65 g sample of an unknown gas at 75 ∘C75 ∘C and 1.00 atm1.00 atm is stored in a 1.95 L1.95 L…

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Q: Identify the reactant or reactiants of the following reaction. CH3 O CH3 www CH3 "CH3

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Q: It is the degree or magnitude of capability to resist changes in the pH of the buffer…

A: Buffer is defined as a solution which consists of a mixture of a weak acid and the conjugate base of…

Q: Br Ce W4+ p2- Question 6 Write out the electron configurations, in noble gas shorthand notation, for…

A: Electronic configuration --> Na --> [Ne] 3s1 P2- --> [Ne] 3s2 3p5 Br --> [Ar]  4s2  3d10…

Q: What is the fundamental difference between a mixture of elements and a compound? elements in a…

A: An element is made up of same kind of atoms whereas a compound can be formed of two or more kind of…

Q: A sample of zinc metal reacts completely with an excess of hydrochloric acid: Zn(s) + 2HCl(aq) →…

A: we need to calculate the amount of zinc consumed in the reaction

Q: Which structure (or structures) represents (or represent) the enantiomer of the molecule below? OCH3…

A: Definition of enantiomer: An enantiomer is one of two stereoisomers that are non superimposable…

Q: Ammonium phosphate ((NH¹)¸PO4) is an important ingredient in many fertilizers. It can be made by…

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Q: Provide the correct IUPAC name for the compound shown here.

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Q: He(g) has an average kinetic energy of 4370 J/mol4370 J/mol under certain conditions, what is the…

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Q: On earth, tin has 10 different stable isotopes. The heaviest, 124 Sn makes up 5.80% of naturally…

A: Isotopes are atoms of the same element that have same number of protons and different number of…

Q: QUESTION 1 The Ksp for Co(OH)2 at 25 °C is 2.5 x 10-16, What is the molar solubility of Co(OH)2 in…

A: Note: As per the guidelines solution of first question has been made. For the expert solutions of…

Q: and Question: How does temperature affect the rate of diff 1. Observe: Set the temperature (Temp.)…

A: To explain how temperature affect the rate of diffusion

Q: (a) (b) : Br: H-Br: :0: H : Br: Br: H₂Ö:

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Q: Complete and balance the following nuclear equations by including the missing particle. Part H+B+3?…

A: In a nuclear reaction total charge and mass is conserved. So we can determine the charge and mass of…

Q: Why is it that the phosphate below can readily epimerize at the 3-position but the same…

A: Proton alpha to the carbonyl group are acidic as the anion form can easily be stabilized by…

Q: 3 points (I): What molar ratio of benzoate ion to benzoic acid would be required to prepare a buffer…

A: Given, Ka of C6H5COOH=6.5×10-5 pH=5.2

Q: Calculate the equilibrium concentration of H₂. Express the molarity to three decimal places.

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Q: TRUE OR FALSE  During neutralization reaction, the concentration of the buffer system remains the…

A: This is a problem based on ionic equilibrium where we are dealing with buffer system .

Q: 1. НСООН 2. CH3C Hз 3. HCFO

A: Since you asked multiple questions so as per Q&A guidelines of portal I solved first three parts…

Q: Arrange the following phenolic compounds based on increasing pH. OH ОН ОН I A. III < II < 1 B.…

A: This question is related to acidic strength of benzenoid organic compounds. Inductive and…

Q: Classify each item as an element or a compound: (a) the gas inside a neon light: (select) (b) the…

A: we have to classify the given as element or compound