In the laboratory, a general chemistry student measured the pH of a 0.423 M aqueous solution of nitrous acid to be 1.902. Use the information she obtained to determine the K₂ for this acid. K₂(experiment) =

Q: Consider the TLC chromatogram shown below This is the developed TLC plate obtained by a student…

A: We know that when a mobile phase is made more polar than originally, all compounds travel further…

Q: How many grams of KHP are needed in the standardization of 25.0 ml 0.100 M NaOH? Mol. Wt KHP = 204.2…

A: We will equate the number of moles of KHP and NaOH

Q: For each chiral carbon labeled in the structures below (see the numbers), assign R or S absolute…

A: Given structures are :

Q: = Report - Goog X ed Scholarship Ap CovalentActivity.do?locator-assignment-take NGLSync Porta OWLv2…

A:

Q: The units for the answer is KJ/mol. But this answer says joules. why is that?

A: Previous answer is incorrect.

Q: Explain how enthalpy changes relate to the solubility difference between sodium chloride and caesium…

A: Ans.  The lattice enthalpy of alkali metal chlorides decreases down the group, so, the solubility of…

Q: Ell -0.201 V for the reaction 3Pt(s)+12C1 (aq) + 2NO₁ (aq) +8H(aq) → 3PtCl(aq) + 2NO(g) + 4H₂O(1)…

A: From E°cell we can calculate individual half cell potentials.

Q: What is the relationship between the following two molecules? НО -Н ОН ОН -ОН НО H н-он ОН Н -ОН O…

A: We have to find the relationship between these two molecules.

Q: Complete the following table: Some polyatomic ions name sulfate anion phosphate anion hydronium…

A:

Q: Compare: capacity factor, k' I 0.18 0.16 0.14 0.12 0.1 11 0.08 0.06 0.04 0.02 0 the quantity in I is…

A:

Q: What is the equivalent weight of Na₂S₂O3.5H₂O? Na = 23.0, S = 32.1, O = 16.0, H = 1.0

A: finding the equivalent weight of Na2s2o3.5h2o

Q: Classify the formulas as amines, amides, or neither. Amines HỌC-NH, RCONH, Amides RCH,NH, ||…

A: Given,  The amines, amides and neither molecules from the list of molecules are:

Q: II. O: H 1. pkA=6.0 What is the one letter code for the primary sequence of the peptide? SFCMDLR…

A: Peptide is small chain of Amino acid

Q: Molybdenum (Mo) is element 42 on the periodic table. A sample contains 7.31x1022 atoms of Mo.…

A:

Q: At a certain temperature, 0.363 mol CH4 and 0.637 mol H₂S are placed in a 1.50 L container. CH₂(g) +…

A: The correct answer is given below

Q: Write the empirical formula of at least four binary ionic compounds that could be formed from the…

A: Write the empirical formula of at least four binary ionic compounds that could be formed from the…

Q: Given a solution of iodine which is 1mL ≈ 0.0198 g As203, and a sodium thiosulfate solution of which…

A: 1) An iodine solution can be standardized by arsenic trioxide (As2O3). The reaction equation is…

Q: At a certain temperature, 0.363 mol CH4 and 0.637 mol H₂S are placed in a 1.50 L container. CH₂(g) +…

A:

Q: what is the NMR spectrum of benzylcyclohexan-1-ol. explain in detail how to expect to see the nmr…

A:

Q: Which of the following separation techniques is ideal to separate a solute from the solvent of a…

A: Extraction is the answer. In the extraction process the desired product is extracted from the…

Q: What is the volume of 0.662 mol of He if the density of He is 0.1785 g/L?

A: Given,  The moles of He = 0.662 mol.  The density of He = 0.1785 g/L The volume of He is:

Q: Which of the following correctly explains why car tires may appear more deflated in winter than in…

A: Tiers seems to deflated more  in cold days.

Q: Rank the following carbocations in order of decreasing stability (most → least): CH₂CHCH₂…

A:

Q: +X Describe the atomic orbital shown in this picture. +Z A) 2pz B) 2py C) 2px D) 3px E) 3py +y

A:

Q: When liquids change to a solid state, they   Question 5 options:   absorb energy.   release energy.…

A: When liquids change to a solid state, they...release or absorb the energy answer is given below with…

Q: Compare: number of plates, N W₁ = 2.5; W₁l = 3.0 I 0.18 0.16 0.14 0.12 0.1 11 0.08 0.06 0.04 0.02 0…

A: No of plates = N = 5.54 * (Retention Time / Half of base width)2

Q: 2.) On Table Q, take a look at the "Structural Formula" of all three classes of organic compounds…

A: Given,      The structural formula of ethane, ethene, and ethyne. We have to write the similarities…

Q: The unit for reaction rates is mol*L/s. The order of a reaction is determined experimentally.…

A: 1) the unit for reaction rates is mol×L/s

Q: StectureD is more stable. Deaw the Newman projections for these two Chairs?

A:

Q: Identify the Lewis acid and Lewis base in the following equation:…

A:

Q: If an atom of Uranium, Element 92, were to absorb an Alpha particle (comprising two protons and two…

A: For a balanced nuclear reaction sum of mass number and sum of atomic numbers must be same on both…

Q: The octahedral ion complex [CoF6] 3‒ absorbs at 675 nm. (a) What color is the complex? (b)…

A:

Q: Which is correct and which is incorrect from the following sentences? In any case, give a brief…

A: Here we have to predict the true or false statement from the following given statements.

Q: What is the potential that develops at the interface between the saturated KCI solution in the salt…

A: Electrochemistry is branch of chemistry in which  both oxidation and reduction reaction occurs…

Q: Given the following reactions 2NO → N₂ + O₂ AH = -180 kJ 2NO+ 0₂ → 2NO2 AH = -112 kJ the enthalpy of…

A:

Q: 3. PBr3 + H2O → H3PO4 + HBr

A: PBr3 +H2O → H3PO4 + HBr  Step 1: Here only P take part in redox system . In PBr3 , oxidation state…

Q: Show the retrosynthesis and the synthesis of the following compounds: OH Target material Starting…

A: Dear student, the given question is a multiple question, hence I solved first question according to…

Q: How do I calculate the numner of moles contained in this sample? 1.06 x 10 (to the 25th power) atoms…

A:

Q: Question 4 For the molecules shown below, which ones represent constitutional isomers of each other?…

A:

Q: A mixture of 0.592 M H₂O, 0.480 M Cl₂O, and 0.747 M HClO are enclosed in a vessel at 25 °C. H₂O(g) +…

A: Given, H2O (g) + Cl2O (g) ⇌ 2HOCl                           Kc = 0.0900 at 25 ℃   [H2O] = 0.592 M,…

Q: Choose the correct products for the following single displacement reaction. If there is no reaction,…

A:

Q: Methanol is a highly toxic compound that can cause permanent damage in the optic nerve, leading to…

A: Here we have to predict the inter-molecular forces of attraction present in methanol.

Q: A sample of hydrogen occupies 107 L at STP (standard temperature & pressure) in a flexible…

A: Given that:  Initial volume(V1) = 107L Initial P1 = 1atm Intital T1 = 273 K Final volume(V2) = 135L…

Q: 1. What is the specific gravity of N2 * at 80°F and 745 mm Hg compared to air at 80°F and 745 mm Hg?

A:

Q: 5. Draw the structure of a disaccharide that consists of two a-galactoses connected by an al-4…

A:

Q: We want to determine the purity of copper in the wires used for electrical cables. This can be done…

A:

Q: fy the reaction endothermic or exothermic and give the cha on. (s) + 2 Fe (s) + 645 kJ → 2 Al (s) +…

A: As heat is added to reaction,  so it is endothermic reaction.

Q: For which of the following reactions is AHxn equal to AH of the product(s)?You do not need to look…

A:

Q: Q1. What are the similarities in the chemical structure of the compounds? Are the compounds made up…

A: Answer 1. Glycerol - Mostly known as glycerine is a poly-alcohol compound that is colorless,…

Q: The enthalpy of formation of ammonia is -46 kJmol-1 and the bond dissociation enthalpies of nitrogen…

A: