In the presence of oxygen, the phosphorous present in biodegradable material ends up mainly as ________.   a. PO43− b. PF5 c. PH3 d. P4S10 e. P4O10

Q: 2. In heterogeneous reaction and system at equilibrium such as decomposition of solid sodium…

A: Given reaction is :  2NaHCO3 (s) <----------> Na2CO3 (s) + H2O (g) + CO2 (g)  Write the…

Q: Q2- How mainy mls of Atropine sulphate present in lab. As a stock sol. Of 1: 20 conc. should be used…

A: 1:20 concentration indicate that 20 mL of stock solution contains 1 g of atropine sulphate.

Q: draw chemical structure (condensed) of the following: i) trans-1-isopropyl-2-methyl-cyclohexane…

A: i) trans-1-isopropyl-2-methyl-cyclohexane -  It has main chain of cyclohexane with one isopropyl…

Q: 4) What fraction of a -1.20 to 1.4 o? for gousian datribution lies within a

A: We have to find What fraction of a population lies for a gaussian distribution within -1.20 to 1.40?

Q: ection of reaction given the following : H2(8) + CO2 (g ) H2O(g) + CO (g) 71,0.0100 mol of H2 and…

A: From the given data, [H2] = 0.010 M [CO2] = 0.02 M [H2O]  = 0 M [CO] = 0 M Reaction Quotient(Q) = =…

Q: Compare the structural features of these two possible bonding arrangements for OSF4 and use this…

A: The structures given are,

Q: 2. Determination of the molecular weight of proteins. A student performs a protein separation in the…

A: Here we are required to separate protein by electrophoresis.

Q: 16. Figure shows variation of log D (Diffusivity of Au atoms, self diffusion). as a function of 1/T.…

A: diffusion of metal ions and ARRHENIUS PLOTS

Q: It is found that the energy required to reduce particles from a mean diameter of l.00 cm to 0.300 cm…

A:

Q: 1. At 373K, Kp =0.416 for the equillbrium 2NOBr(g) > 2NO(g) + Brz(g) If the pressures of NOBr(g) and…

A: Given: Kp = 0.416  at 373K  Pressure of NOBr and pressure of NO is equal  So find presure of ( PBr2…

Q: 2) Below is a graph of reaction rate versus time. a. Identify where on the graph where the reaction…

A: Answer: For the any system at equilibrium, all the parameters those define the system like color,…

Q: Some people have an allergic reaction to the food preservative sulfite (SO32−). Sulfite in wine was…

A: Given the excess I3-(aq) is back titrated with S2O32-(aq) according to the below-balanced equation:…

Q: At 25°C, the K, for a certain monoprotic acid HA is 6.2x10-10, what will be the K, value for the…

A: Here we are required to find the dissociation constant for the weak monoprotic acid HA

Q: Which one motecule has a Chieat asymmetcie Carbon atom? BY () ) CHzCHz CHCH2 CH3-5 CH3 (B) ) CH3-–…

A: This question is related to stereochemistry. A chiral centre is that which is attached to four…

Q: Benzoic acid (C6H5COOH) Find the following with the given data: Freezing point of lauric acid…

A: Given: Mass of lauric acid = 80 g Mass of unknown = 10 g = 0.01 Kg. Kf of lauric acid = 3.9 degree…

Q: Oxidizing Reducing Electrode E°cathode EO anode = E°cell Agent Agent Potential (V) Au (aq) + 3 e…

A: In this question, we want to determine the value of standard potential for cell between Au3+ and Ni.…

Q: 16.Name the following molecule. HOH 4

A: We will first find the parent chain and number them accordingly. Then find the substituent.

Q: What is the total number of 3/3 stereoisomers? CI .CI CI

A: Chiral carbon: The sp3 hybridized carbon atom that is attached to the four different types of atoms…

Q: What are the configurations of carbons 2 and 3 in the Fischer projection below? CH A. 2R, 3R B. 2R,…

A:

Q: 3. Draw the structure of procainamide hydrochloride, mark the aromatic amino-group and suggest the…

A: Procainamide is an aromatic amide group. The molecule looks as follows:

Q: 1. Using IUPAC nomenclature provide the correct names for the following compounds. CH3 H2C a. HO.

A: IUPAC name is used for naming the organic compound as recommended by international union of pure and…

Q: Balance the following oxidation-reduction reaction as if it were to occur in a basic solution. I(aq)…

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Q: Which of the following amino acids is naturally occurring? - CH,OH H- ČH,COO- ČH,CH,CO0-

A: 1) You answer is incorrect because last structure of alpha amino acid is not naturally occurring…

Q: What is the molarity of a solution with 94.3 g of glucose molar mass 180.16 g per moles in 636 g of…

A:

Q: The monomers -OH and HN- NH2 но would react with each other to form a polyester a polycarbonate O a…

A:

Q: 1. 2. 3.

A: For all the nomenclature of given structures, it is very important to decide the proper basic unit…

Q: What is the IUPAC name of the following compound? CH3CH2CH2C-H

A: In this question, we will name the compound by according to IUPAC rule.  You can see below.

Q: For each quantity in the table below, write the symbol of the SI unit in which it would usually be…

A: Radioactive decay is the process by which a unstable nuclei of a atom loses energy to produce a…

Q: 3. (a) A solution of 20.91 % by weight H2SO, has a specific gravity of 1.150. Wwhat is the normality…

A:

Q: 1. It is desired to prepare calcium sulfate solution by dissolving 250 grams of calcium sulfate in…

A:

Q: What is the activity (in Bq) of a sample of Cs-137 if 31.6 years ago it was recorded to have an…

A: Given: The initial activity of Cs-137 = 9932.8 Bq And the time passed = 31.6 years. The half-life of…

Q: freezing point depression constant of the solvent is 3.43°C/m?

A:

Q: Q3 We want to measure the concentration of a molecule in water that absorbs green light. When a…

A: As per the rules only three sub-parts can be answered

Q: What is the purpose of the buffer salts?   The buffer salts serve to make water a better conductor…

A: To explain the purpose of the buffer salts.

Q: identify the hybridization of each carbon in all the following structures

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Q: IA) + H,0 oH oH +H,0

A:

Q: A solution of 0.021 M AgNO₃ that is also 1.23 M NH₃. The kf for Ag(NH₃)₂⁺ is 1.7x10⁷. In a 1.5L of…

A: Given: Concentration of Ag+ (From AgNO3) = 0.021 M Concentration of NH3 = 1.23 M Volume of solution…

Q: Consider the reaction: NH4*(ag) + 2NO2 (aq) → N2(e) + 2H2O(2) Rate = k[NH4*][NO2] Which of the…

A: According to le chatlier's principle, increasing the concentration of reactants will make the…

Q: find the product (name too) from this reaction and draw the mechanism as well showing arrows

A:

Q: 3. Draw the formula of papaverine hydrochloride, mark the tertiary nitrogen in its structure and…

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Q: 1. Which of the following statements is false considering the reaction below? 2NO + 2H2 () 2N2 +…

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A:

Q: How long will it take to plate out 1.9 g Ni from aqueous Ni2+ with a current of 114.4 A? WHERE ARE…

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Q: 1 Zn + 2 HCI → 1 ZNCI, + 1 2, Given 300 grams of zinc, what is the theoretical yield of hydrogen in…

A:

Q: Cr2O3 (s) + 3 H2S (g) → Cr2 S3 (s) + 3 H2O (1) Chromium(III) oxide reacts with hydrogen sulfide gas…

A: 1) Mass of Cr2O3=8 g , Molar mass = 152 g mol-1 Mass of  Cr2S3=?, Molar mass=200 g mol-1

Q: A 500 mL of 3.0 M NaOH solution was diluted in order to produce a 1.0 M solution? What is the volume…

A:

Q: Question 6 What is the actindy of Lo my of 124,("% = 1.7 KIo pars)? of 1.0

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Q: Three common compounds used in "ice melt" are magnesium chloride, calcium chloride and sodium…

A: #(a): Given that 37.45 g CaCl2 is soluble in 50.0 mL of water. Solubility is calculated as mol/L or…

Q: Determine the molecularity of the rate limiting step in this mechanism: S1 (fast): C6H6 + Br2 +…

A:

Q: 2) Draw the products of the following reaction: CH;CH; OCH,CH; 1. 2 CH,MgCl 2. Н.О. Н Answer:

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Group 15 elements

The elements of group 15 are phosphorus, nitrogen, bismuth antimony, and arsenic. The most abundant element which is present in the air is nitrogen and the percentage of nitrogen present in the air is 78%. In the free state, the elemental nitrogen is present as diatomic gas (N2). In the organic matter obtained from plants and animals, phosphorus is the dominant element present. In nucleic acids, phosphate groups are present. Phosphates are also found in teeth and bones. The other elements arsenic, bismuth, and antimony are found as sulfides. Arsenopyrite, bismuth glance, and stibnite are examples of sulfides of arsenic, bismuth, and antimony respectively.