1 22. In this work, the use of ion-exchange technology for lactic acid recovery is proposed. Phone 910-450-4357,Option 1, then Option 2. This nitrite concentration was only due to ammonia oxidation. Typically, organic chemists compare the various values from their determination in water, DMSO and the. NH 4 Cl is an acidic salt. The compound forms several hydrates CoCl 2 &183;n H 2 O, for n 1, 2, 6, and 9. (b) In alkaline solutions insoluble Cu(OH) 2 is precipitated. NH 3 HCl NH 4 Cl. Appointment required. Chloramine, also sometimes referred to as monochloramine, has the chemical formula NH 2 Cl. Match the List I (reaction) with List II (reaction intermediate) and select the correct answer using the codes given below the Lists. Dedicated at the University of Tennessee at Chattanooga on April 7, 2022. (a) CH 3 NH 2. (NCLH) stock quote, history, news and other vital information to help you with your stock trading and investing. when Chlorine gas (Cl2) reacts with ammonia present in excess it leads to ammonium chloride (NH4Cl) and Nitrogen gas. Mercurous chloride. Count the number of atoms of each element on each side of the equation and verify that all elements and electrons (if there are chargesions) are balanced. Hint for Naming NH4Cl. 40 mol NH 4 Cl are mixed to give 1 L of solution. C o (N H 3) 5 (S O 4) B r and. The structures of many naturally occurring alkaloids have profound physiological and psychotropic effects in humans. The mission of the NHCL program is to enhance public appreciation for the contributions of the chemical sciences to modern life in the United States and to encourage a sense of pride in their practitioners for chemistrys rich history. Catalysts 2021, 11, 1497 3 of 29 Catalysts 2021, 11, x FOR PEER REVIEW 3 of 30 i. stock was issued. Okkal (PO), Kalady, Kerala 683550. American Pitbull Bath 1221 pic. Solutions, Phase Equilibrium, Conductance, Electrochemistry & Functional. 4 and 108. . Abstract and Figures. new haven. NH 3 Cl Cl Cl M NH 3 NH 3 NH CoCl 2 (NH 3) 4 Optically inactive M NH 3 NH 3 NH 3 NH 3 Optically inactive 3 Trans Cis Cl. Monochloramine, dichloramine (NHCl2) and trichloramine (NCl3) are produced by adding chlorine to a solution containing ammonia, by adding ammonia to a solution containing free residual chlorine or by adding premixed solutions of ammonia and chlorine to water (14). Science Chemistry The organic bases cocaine pKb 8. NO 2 NHOH (Product) 4 Zn NH Cl 1 71. Solutions, Phase Equilibrium, Conductance, Electrochemistry & Functional. This buffer is also called Ammoniacal Buffer, Dissolve 90 g of ammonium chloride in 375 mL of 2830 ammonium hydroxide, and dilute to 500 mL with water. Eversource is an energy provider serving customers in Connecticut, Massachusetts and New Hampshire. Course Code BCHCT-135. . the result only the ionic product of the sulphides of group II radicals exceed their corresponding solubility product and hence only these are precipitated. V ol. Progress Report 1 Due May 31, 2024 - Funding 225,000. Ammonium chloride is an inorganic compound with the chemical name Ammonium Chloride. Progress Report 2 Due August 31, 2024 - Funding 225,000. The molar conductance of its solution corresponds to a total of. It is the chloride salt of the metal ammine complex Ni (NH 3) 6 2. 33, No. NH 3 NH 4 is not oxidized by Cl&183;but by HClOClO and other active chlorine species, as Cl&183;primarily exists on the anode surface whereas NH 4 cannot reach the anode surface. According to this concept , , (i) Acid is a substance (molecule or ion) which has a tendency to donate a proton to any, , substance, an, (ii) A base is a. NHS ester O O N O O R N HO O O NHS ester NHS reagent Stable conjugate (amide bond) Primary amine on protein O O N O O R N H O R P NH 2 P pH 79 Figure 3. Hope the information shed above regarding NCERT MCQ Questions for Class 12 Chemistry Chapter 13 Amines with Answers Pdf free download has been useful to an extent. Therefore, you will write the complex with NH 3 first, followed by the one with Cl (the same order as the formula). NH 3 (g) HCl (g) NH 4 Cl (s) It typically takes just a few minutes for the ring to form, but the exact time will depend on the dimensions of the tube, the amount of the solutions which are put on the cotton wool wads and the temperature of the room. Also, the infrared spectroscopy correlation table is linked on bottom. 500 Design Length-10. a NH 4 b Cl 2 c NH 4 Cl Step 2 Create a System of Equations Create an equation for each element (N, H, Cl) where each term represents the number of atoms of the element in each reactant or product. in laterite leaching processes. C o (N H 3) 5 (S O 4) B r and. NH 3 Cl Cl Cl M NH 3 NH 3 NH CoCl 2 (NH 3) 4 Optically inactive M NH 3 NH 3 NH 3 NH 3 Optically inactive 3 Trans Cis Cl. Thirdly, it won&39;t matter what your friends put for Soph. The mission of the NHCL program is to enhance public appreciation for the contributions of the chemical sciences to modern life in the United States and to encourage a sense of pride in their practitioners for chemistrys rich history. Uses of Ammonium Chloride. 49146 gmol. Chemical Properties of Ammonium Chloride (NH 4 Cl). A certain buffer solution equals concentration of X and HX. choose the site nearest you boston - includes merrimack valley, metro west, north shore, south shore. View real-time stock prices and stock quotes for a full. Laboratory (910) 450-4606. a Nh 3 b HCl c Nh 4 Cl d H 2 Step 2 Create a System of Equations Create an equation for each element (Nh, H, Cl) where each term represents the number of atoms of the element in each reactant or product. Phone 910-450-4357,Option 1, then Option 2. The ammonium ion is the conjugate acid of the base ammonia, NH 3; its acid ionization (or acid hydrolysis) reaction is represented by. I just labeled them as "AP" in the drop down menu and next to the actual type-in, I put in parenthesis "CL. The gaseous state is more stable thermally as compared to liquid state. Ionization energies calculated by the transition-state method are compared with experimental ESCA values and differences in the electronic structure of. The structure of the complex is (a) Co(NH 3) 3 Cl 3 2NH 3 (b) CO(NH 3) 4 Cl 2 Cl NH 3 (c) CO(NH 3) 4 ClCl 2. Formula in Hill system is C 3 H 10 Cl N Computing molar mass (molar weight) To calculate molar mass of a chemical compound enter its formula and click &39;Compute&39;. It is soluble in water (37). a NH 4 b Cl 2 c NH 4 Cl Step 2 Create a System of Equations Create an equation for each element (N, H, Cl) where each term represents the number of atoms of the element in each reactant or product. Word Equation. The tert-butyldimethylsilyloxy group is ca. Ammonium chloride is formed. Balance the. Balance the reaction of AgCl NH3 Ag (NH3)2 Cl. The chloride ion is the conjugate base of hydrochloric acid, and so its base ionization (or base hydrolysis) reaction is represented by. Since there is an equal number of each element in the reactants and products of NH4Cl NH3 HCl, the equation is balanced. ) HCl HO P O HO N COOH COOH (PMIDA) HO P O HO H N OH O Glyphosate (PMG) HCl (31) HO P O HO H N OH O Na 2 MoO 4 H. Find the latest Norwegian Cruise Line Holdings Ltd. 9 (2021) An Updated Review on Synthesis and Biological Activities of Thiosemicarbazide Analogs A Revie w 1959. 10, 1. Get information in the palm of your hand. These transformations entail depolymerization via cleavage of Pt-Cl-Pt linkages PtCl 2 2 L PtCl 2 L 2. 49146 gmol. 1 Preporation Dissolve 3. Search by Systematic name, Synonym, Trade name, Registry number, SMILES or InChI. The new Medical Center was built on a 162-acre site on the Northeast Creek at a cost of 46 million. 2 2 NaCp Cp. Office of Data and Informatics. Metallic Be is used for making windows of X rays tubes. The pH of a buffer solution prepared by dissolving 30g of Na 2CO 3 in 500mL of an aqueous solution containing 150mL of 1M HCl. Access your residential account, report outages, and more. Write the hydrolysis reaction for the anilinium ion (C6H5NH3) C6H5NH3 H2O C6H5NH2 H3O Step 38 3. 6mg of NHS or 1. Holiday Hours 10 AM - 6 PM. Metal ions are dark gray, nitrogen atoms are light gray, and hydrogen atoms are light color. HOCl OCl H ; Ka 10-7. Nacl 25 Ml Sodium Chloride Asli Original Natrium Klorida Nhcl Infus, Rp68. This white crystalline solid is well known for its low solubility in water and its sensitivity to light. ) In chemistry, a hydrogen bond (or H-bond) is. This is also formed as the by-product of the Solvay process. Share your ideas and get valuable insights from the community of like minded traders and investors. Send enquiry. Click hereto get an answer to your question 48 In a buffer solution the ratio of concentration of NH,Cl and NH,OH is 1 1 when it changes in 2 1 what will be the value of pH of buffer- (A) Increase (B) Decrease (C) No effect (D) None m artant role in. It supports account-to-account payments (Direct Credit) and collection (Direct Debit) related transactions. View a power outage map, report an outage or access helpful resources. 1 Review. The correct answer is 9. Core Course in Chemistry. It is formed by a reaction between ammonia and chlorine or sodium hypochlorite. This is also formed as the by-product of the Solvay process. Find, read and cite all the research you. NH 2 Cl Cl NH 2 Co NH Cl 2 NH 2 Co Cl NH 2 NH NH 2 cis 2 NH 2 Non superimposable mirror images. Newmarket Belgian malinois puppies 0. Royal Caribbean Group. Because peptides and proteins contain multiple carboxyls and amines, direct EDC-mediated crosslinking usually causes. 0 g sodium hydroxide in approximately 450 mL water. Mar 8, 2022 &0183; NH 4 Cl NH 3 HCl. In this study, a process of alkali leaching-carbonation-acid leaching-solvent extraction was developed to recover and enrich gallium from corundum flue dust. Carbon dioxide CO 2 44 22 Quick lime CaO 56 28 Soda Ash Na 2 CO 3 106 53. Step 1 addition of hydroxide ion to the carbonyl carbon. 6 &215; 10 15. The primary hazard is the threat posed to the environment. 00 mL of 12. Probably the best-known examples of cis and trans isomers of an MA 2 B 2 square planar complex are cis-Pt(NH 3) 2 Cl 2, also known as cisplatin, and trans-Pt(NH 3) 2 Cl 2, which is actually toxic rather than therapeutic. It is formed by a reaction between ammonia and chlorine or sodium hypochlorite. Cl is balanced 2 atoms in reagents and 2 atoms in products. The new Medical Center was built on a 162-acre site on the Northeast Creek at a cost of 46 million. Capitalize the first letter in chemical symbol and use lower case for the remaining letters Ca, Fe, Mg, Mn, S, O, H, C, N, Na. 1 Study App and Learning App with Instant Video Solutions for NCERT Class 6, Class 7, Class 8, Class 9, Class 10, Class 11 and Class 12, IIT JEE prep, NEET preparation and CBSE, UP Board, Bihar Board, Rajasthan Board, MP Board, Telangana Board etc. Balancing step by step using the inspection method. Bedford, New Hampshire stack of archie comic books. ) Rated voltage (V a. Students (upto class 102) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (MainsAdvance) and NEET can ask questions from any subject and. It is also known as sal ammoniac, the salt of ammonia and hydrogen chloride. Metro Pillar 390), Rohini-110085 Ph- 47155238, 9310378303, 9868445900 TAKSHILA INSTITUTE Coordination & Organometallic CompoundsPermutation and Combinations (c) H N 3 Co H N 3 NH 3 Cl Cl Cl. Na is balanced 1 atom in reagents and 1 atom in products. a catalyst for the one-pot synthesis of 3,4-dihydropyrimidin-2-(1H)-ones; a promoter in the multicomponent synthesis of pyrrolo3,4-bpyridine-5-onea reagent to improve the hydrolysis rate of magnesium hydride for the generation of hydrogen. Cobalt(II) chloride is an inorganic compound of cobalt and chlorine, with the formula CoCl 2. nhcl 100ml original. northwest CT. The inorganic framework is connected to the organic moieties through the NH 3 heads, which interact with the chlorine atoms of the MnCl 4 2 framework via hydrogen bonds (NHCl), and each. The hybridization of NH 2 Cl is sp 3. NH CL BUY AND HOLD STRATEGY LP (LEI 549300J6GOXEWY6VO305) is a legal entity registered with BUSINESS ENTITY DATA B. IUPAC identifier. Part numbers Part numbers with insulated with metal metal gripping gripping lugs lugs. Conversely, ion-dipole. In this video we&39;ll write the correct formula for Ammonium chloride (NH4Cl). x 10-. Many complexes have been described, the following are illustrative pink K 2 PtCl 4, a widely employed water-soluble. The dominant species of HClOClO active chlorine species are varied at different pH values (Fig. 477 T 298 K jee main 2023; Share It On Facebook Twitter Email. Previous Article. Adding a proton gives CH 3 NH 3 , its conjugate acid. However, the NH 4 ion will NH 4 (aq) H 2 O NH 3 (aq) H 3 O (aq) Recall from the section Arrhenius Acids and Bases. 0 license, unless otherwise stated. Examples of these drugs include nicotine, morphine, codeine, and heroin. The sublimation of ice to gas is more of an increase than. b indevende ;, 05 er of independent Variable, t is meant the smallest num er, (2) Component By the term componen &176; ition of each phase can, constituents, taking part in the state of equilibrium, by means of which. 1 point For a correct explanation The intermolecular forces between NH 2Cl molecules and water are stronger than those between NCl 3 Cl molecules and water, which leads to the greater solubility of NH 2 in. Its instability has involved it in a number of accidents, such as the PEPCON. Hexaamminenickel chloride is the chemical compound with the formula Ni (NH 3) 6 Cl 2. 6923 M" Assuming that the volume of the solution does not change after adding the ammonium chloride, the number of moles you&39;d get in the solution will be c nV implies n c V n "1. The sublimation of ice is a large increase in Entropy because gas has more Entropy than solids. NH 4 Cl, NH 4 NO 3 , NH 4 HCO 3. , Manchester VIDEO TOUR - 2-BR w FREE Heat - Great Commuter Location READY NOW 1,638. Farm & Garden for sale in New Hampshire. . 1h ago Newmarket. 2006 FORD RANGER FX4 4X4 AUTOMATIC FRAME SOLID. 0 license, unless otherwise stated. , Manchester VIDEO TOUR - 2-BR w FREE Heat - Great Commuter Location READY NOW 1,638. nitrogen oxides were identied by Heath and Majer. Jun 22, 2018 Answer link. VD (NH 4) 2 CO 3, (NH 4) 2 S 2. Then find the corresponding values for absorption, appearance and other attributes. Welcome to Sarthaks eConnect A unique platform where students can interact with teachersexpertsstudents to get solutions to their queries. 1220 Starting at 16 per hour Grappone Automotive Group. Compute Mass of Each Element. th&237; d agcl(r) cac2o4(r) trong ho&225; ph&226;n t&237;ch, phn. If a complex is charged, it is called a complex ion (ex. Doublelayered SnO 2 NH 4 ClSnO 2 for efficient planar perovskite solar cells with improved operational stability. new haven. Among the. Bedford, New Hampshire stack of archie comic books. Orange St. NH 2 Cl Cl NH 2 Co NH Cl 2 NH 2 Co Cl NH 2 NH NH 2 cis 2 NH 2 Non superimposable mirror images. It is the chloride salt of the coordination complex Co(NH 3) 6 3, which is considered an archetypal "Werner complex", named after the pioneer of coordination chemistry, Alfred Werner. Count the number of atoms of each element on each side of the equation and verify that all elements and electrons (if there are chargesions) are balanced. 19 Plan The titration is of a weak acid, HBrO, with a strong base, NaOH. It also formed by the oxidation of lead metal by copper(II) chloride Pb CuCl 2 PbCl 2 Cu. A buffer solution is prepared by dissolving 0 mole of methylamine, CH 3 NH 2 and 0. Protecting group is labile. We champion three premier membership programs the Leadership Excellence Networks (LENS), the National Council on Administrative Fellowships (NCAF), and the. CAS Registry Number This structure is also available as a. Specifically, di-, tri-, tetra-, penta-, hexa-, etc. NH4Cl HCl Cl2 HNH4 is a Double Displacement (Metathesis) reaction where one mole of Ammonium Chloride NH 4 Cl and one mole of Hydrogen Chloride HCl react to form one mole of Dichlorine Cl 2 and one mole of Nitrogen Pentahydride HNH 4 Show. Count the number of atoms of each element on each side of the equation and verify that all elements and electrons (if there are chargesions) are balanced. This is the classic acid species in solution, so a solution of NH 4 (aq) ions is slightly acidic. 0 M. ("Hydrogen bonds" in the top image are exaggerated by artifacts of the imaging technique. lng k ra v&224; tr&250;t phn cht rn v&224;o y np li, lp nhit k l&234;n. It is one of the three chloramines of ammonia, the others being monochloramine NH) and nitrogen trichloride (3). What is the conjugate acid or the conjugate base of (a) HCl; (b) CH 3 NH 2; (c) OH ; (d) HCO 3 . moles NH4Cl to grams. CuCu2 AgAg 34. Technical data - NH size 01. Metro Pillar 390), Rohini-110085 Ph- 47155238, 9310378303, 9868445900 TAKSHILA INSTITUTE Coordination & Organometallic CompoundsPermutation and Combinations (c) H N 3 Co H N 3 NH 3 Cl Cl Cl. To produce sodium chloride. VD NH 4 Cl, CuSO 4, AlCl 3 - Dung dch mui trung h&242;a to bi cation ca baz yu v&224; anion gc axit yu. princess house wine glasses, fsbo des moines
6 7 g NH 4 Cl. . Nh cl
Zinc chloride forms two salts with ammonium chloride NH 4 2 ZnCl 4 and NH 4 3 ZnCl 4Cl, which decompose on heating liberating HCl, just as zinc chloride hydrate does. first step. It is also known as sal ammoniac, the salt of ammonia and hydrogen chloride. The mixture was heated in a microwave reactor, and theM2(dobpdc) collected by filtration after cooling. fairfield county (subregion of NYC site). Together with dichloramine (NHCl 2) and nitrogen trichloride (NCl 3), it is one of the three chloramines of ammonia. Get information in the palm of your hand. Capitalize the first letter in chemical symbol and use lower case for the remaining letters Ca, Fe, Mg, Mn, S, O, H, C, N, Na. 02 Annual revenue (last year) 4. NH4Cl molecular weight. The cation features six ammonia (called ammines in coordination chemistry. Track Norwegian Cruise Line Holdings Ltd (NCLH) Stock Price, Quote, latest community messages, chart, news and other stock related information. Secondly, UC does not count honors for in-state app for Frosh-Soph classes, either, unless they are advanced math (pre-calc) or APIB courses. This is known as a hydrolysis reaction. The chloride ion is the conjugate base of. As shown in Fig. Since there is an equal number of each element in the reactants and products of C5H5NHCl C5H5NH Cl, the equation is balanced. All library branches closed 28. Infrared Spectrum of 1-chloro-2-methylpropane. Word Equation. A coordination compound CrCl, 4H 2 O precipitates silver chloride when treated with silver nitrate. 1220 Starting at 16 per hour Grappone Automotive Group. Amesbury Brand New Save 10 Eagle metal 5 Gal. Hexaamminecobalt(III) chloride is the chemical compound with the formula Co(NH 3) 6Cl 3. Pt(NH 3) 4Cl 2. pH < 7. moles NH4Cl to grams. Eversource is an energy provider serving customers in Connecticut, Massachusetts and New Hampshire. The sublimation of ice is a large increase in Entropy because gas has more Entropy than solids. ("Hydrogen bonds" in the top image are exaggerated by artifacts of the imaging technique. Ammonium chloride is also formed as the by-product of the Solvay Process. Labor and Delivery (910) 450-4280. new hampshire free stuff - craigslist. M to 6. K Cr H 2 O 2 C 2 O 42. Show transcribed image text. new hampshire free stuff - craigslist. It is used in medicine as an expectorant, especially in cough medicine. The reaction is explained below- 3 Cl 2 8 NH 3 6 NH 4 Cl N 2 (g). It is a red-violet, diamagnetic, water-soluble salt. Cl NH NH 2 NH 2 NH2 Co H2C H2C CH2 CH2 NO2 NO2 trans NH NH NH2 Co H2C H2C H2N NO2 RS-cis CH2 CH2 NO2 1 H2C 1 26 3. Dec 11, 2023 &0183; NH4Cl NH4Cl NH4Cl NH4Cl. nhit t 1 c&226;n nhanh gn bng 4g NH 4 Cl v&224; ghi li khi lng &243; m hn np b&236;nh nhit. 33, No. The plant produces these substances, collectively called secondary. Hudson fancy game board 2 tall 20x20. 9 (2021) An Updated Review on Synthesis and Biological Activities of Thiosemicarbazide Analogs A Revie w 1959. where NH cl and NH op denote the closed and open states of the NH group, ND indicates the amide group after HD exchange, and k op and k cl are the opening and closing rate constants 1,2,3,4. Sodium Na 23 23 Potassium K 39 39 Bicarbonate HCO 3 - 61 61 Sulfate SO 4 -2 96 48 Chloride Cl- 35 35. Solutions with the stable concentration of hydrogen ions and thus typically with no change in pH which is almost independent of dilution and which change very little with small additions of a strong acid or alkali are called buffers. Learn more about its structure, properties, preparation, uses, health effects and FAQs from BYJU&x27;S. This white crystalline solid is well known for its low solubility in water and its sensitivity to light. " I wonder if that&39;s okay<p>. Protecting group is moderately stable might react. SEE MORE TEXTBOOKS. new hampshire heavy equipment - craigslist. NHBoth 2Cl and NCl 3 have dipole-dipole attractions to water. IUPAC identifier. log 2 0. First, bleach (NaOCl) reacts with hydrogen from ammonia (NH 3) to form hydrochloric acid (HCl) NaOCl NaOH HOCl. NH 3 Cl Cl Cl M NH 3 NH 3 NH CoCl 2 (NH 3) 4 Optically inactive M NH 3 NH 3 NH 3 NH 3 Optically inactive 3 Trans Cis Cl. a CH 3 CH 2 NH 2 b HCl c CH 3 CH 2 NH 3 d Cl Step 2 Create a System of Equations Create an equation for each element (C, H, N, Cl) where each term represents the number of atoms of the element in each reactant or product. CAS Registry Number This structure is also available as a. 0 10(-3)"L. Calculate the solubility of calcium phosphate Ca 3 (PO 4) 2 in 0. NHBoth 2Cl and NCl 3 have dipole-dipole attractions to water. OH. 11 Unit Vacant Apartment Building. Note Attempt all questions. Farm & Garden for sale in New Hampshire. ammonium chloride NH 4 Cl 53. As you can see, the charges of these ions. Balance the reaction of CaCl2 NH4OH Ca (OH)2 NH4Cl using this chemical equation balancer. Murray Raney (1885-1966) invented the catalyst now known as Raney nickel in 1926 while working out of his home laboratory near Chattanooga, Tennessee. 1 Review. 1 Structure of (a) Pt (NH3)42 (square planar) and (b) Zn (NH3)42 (tetrahedral). Progress Report 2 Due August 31, 2024 - Funding 225,000. The overall effect on an aqueous solution depends on which ion exerts more influence on the overall acidity. 00 mL of 12. Chemical Properties. BRONSTED-LOWRY CONCEPT OF ACID AND BASE, , JN. NH 2 Cl Lewis structure. Figure 19. Ammonia Hypochlorous Acid Monochloramine Water. Appointment required. western massachusetts. The plane of symmetry would contain the C-C bond of the methyl-substituted ethylenediamine, pass through the platinum cation,. Ammonium Chloride is used in fertilizers as a nitrogen source and is highly used in the crops of rice and wheat. Protecting the double bond 153. So, it was obvious that both oligopeptides were more involved in the formation and consumption of NH 2 Cl than free Tyr. OH. Monochloramine, often called chloramine, is the chemical compound with the formula NH 2 Cl. Many complexes have been described, the following are illustrative pink K 2 PtCl 4, a widely employed water-soluble. How to balance NH 3 Cl 2 N 2 NH 4 Cl. Balancing step by step using the algebraic method. 9 3. No, the structure would then have a plane of symmetry and would no longer be chiral. Eversource wants to inform you about power outages in your area. Mui axit - Mui HSO 4-c&243; m&244;i trng axit (pH < 7) VD. Nov 28, 2023 &0183; ammonium chloride (NH4Cl), the salt of ammonia and hydrogen chloride. It is a red-violet, diamagnetic, water-soluble salt. 1215 Concord (Bow) NH. in the presence of. (C) H 3 C Cl. . garage sales pittsburgh