Naming Compounds
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Naming Polyatomic Ions and Acids Oxyanions
Oxyanions Naming Polyatomic Ions and Oxyanions Acids Oxyanions- negative ions containing Oxyanions may contain the prefix oxygen. “hypo-”, less than, or “per-”, more than. These have the suffix “-ate” or “-ite” For example - “-ate” means it has more oxygen atoms ClO4 Perchlorate bonded, “-ite” has less - ClO3 Chlorate For example - ClO2 Chlorite 2- SO4 sulfate ClO- Hypochlorite 2- SO3 sulfite Acids Naming acids Naming Acids Certain compounds produce H+ ions in Does it contain oxygen? water, these are called acids. If it does not, it gets the prefix “hydro-” and If it does contain an oxyanion, then the suffix “-ic acid” replace the ending. You can recognize them because the neutral compound starts with “H”. HCl If the ending was “–ate”, add “-ic acid” Hydrochloric acid If the ending was “–ite”, add “-ous acid” For example HCl, H2SO4, and HNO3. HF Don’t confuse a polyatomic ion with a H2SO4 Sulfuric Acid Hydrofluoric acid neutral compound. H2SO3 Sulfurous Acid HCN HCO - is hydrogen carbonate, not an acid. 3 Hydrocyanic acid Examples Examples Nomenclature (naming) of Covalent compounds HNO3 HNO3 Nitric Acid HI HI Hydroiodic acid H3AsO4 H3AsO4 Arsenic Acid HClO2 HClO2 Chlorous Acid 1 Determining the type of bond Covalent bonding is very Covalent bonding is very First, determine if you have an ionic different from ionic naming compound or a covalent compound. similar to ionic naming A metal and a nonmetal will form an You always name the one that is least Ionic names ignored the subscript ionic bond. electronegative first (furthest from because there was only one possible Compounds with Polyatomic ions form fluorine) ratio of elements. -
Acetate C2H3O2 Or CH3COO Or CH3CO2 Ammonium NH4
Name:_____________________ Memorization For AP Chem Polyatmic Ions AP Chemistry Polyatomic Ion list - - - Acetate C2H3O2 or CH 3COO or CH 3CO 2 + Ammonium NH 4 - Ammonium Carbonate NH 4CO 3 Cyanide CN - 2- Carbonate CO 3 2- Dichromate Cr 2O7 - Dihydrogen phosphate H2PO 4 - Hydrogen carbonate HCO 3 - Hydrogen sulfate HSO 4 - Hydronium H3O Hydroxide OH - 2- Monohydrogen Phosphate HPO 4 - Nitrate NO 3 - Nitrite NO 2 2- Oxalate C2O4 - Permanganate MnO 4 3- Phosphate PO 4 2- Sulfate SO 4 2- Sulfite SO 3 Hypochlorite ClO - - Chlorite ClO 2 - Chlorate ClO 3 - Perchlorate ClO 4 2- Chromate CrO 4 2- Silicate SiO 3 Thiocyanate SCN - 2- Thiosulfate S2O3 - Bromate BrO 3 2- Selenate SeO 4 - Bisulfite HSO 3 Name:_____________________ Memorization For AP Chem Rules for Naming an Acid When the name of the anion ends in –ide, the acid name begins with the prefix hydro-, the stem of the anion has the suffix –ic and it is followed by the word acid. -ide becomes hydro _____ic Acid Cl- is the Chloride ion so HCl = hydrochloric acid When the anion name ends in –ite, the acid name is the stem of the anion with the suffix –ous, followed by the word acid. -ite becomes ______ous Acid - ClO 2 is the Chlorite ion so HClO 2 = Chlorous acid. When the anion name ends in –ate, the acid name is the stem of the anion with the suffix –ic, followed by the word acid. -ate becomes ______ic Acid - ClO 3 is the Chlorate ion so HClO 3 = Chloric acid. Rules for Naming Ionic Compounds 1. -
And Inter-Protein Couplings of Backbone Motions Underlie
www.nature.com/scientificreports OPEN Intra- and inter-protein couplings of backbone motions underlie protein thiol-disulfde exchange cascade Received: 26 July 2018 Wenbo Zhang1,3, Xiaogang Niu2,3, Jienv Ding1,3,5, Yunfei Hu2,3,6 & Changwen Jin1,2,3,4 Accepted: 6 October 2018 The thioredoxin (Trx)-coupled arsenate reductase (ArsC) is a family of enzymes that catalyzes the Published: xx xx xxxx reduction of arsenate to arsenite in the arsenic detoxifcation pathway. The catalytic cycle involves a series of relayed intramolecular and intermolecular thiol-disulfde exchange reactions. Structures at diferent reaction stages have been determined, suggesting signifcant conformational fuctuations along the reaction pathway. Herein, we use two state-of-the-art NMR methods, the chemical exchange saturation transfer (CEST) and the CPMG-based relaxation dispersion (CPMG RD) experiments, to probe the conformational dynamics of B. subtilis ArsC in all reaction stages, namely the enzymatic active reduced state, the intra-molecular C10–C82 disulfde-bonded intermediate state, the inactive oxidized state, and the inter-molecular disulfde-bonded protein complex with Trx. Our results reveal highly rugged energy landscapes in the active reduced state, and suggest global collective motions in both the C10–C82 disulfde-bonded intermediate and the mixed-disulfde Trx-ArsC complex. Protein thiol-disulfde exchange reactions play fundamental roles in living systems, represented by the thiore- doxin (Trx) and glutaredoxin (Grx) systems that maintain the cytoplasmic reducing environment, the protein DsbA that catalyzes the formation of protein disulfde bonds in bacterial periplasm, as well as the protein disulfde isomerase (PDI) proteins that facilitate correct disulfde bonding1–5. -
Introduction to Chemistry
Introduction to Chemistry Author: Tracy Poulsen Digital Proofer Supported by CK-12 Foundation CK-12 Foundation is a non-profit organization with a mission to reduce the cost of textbook Introduction to Chem... materials for the K-12 market both in the U.S. and worldwide. Using an open-content, web-based Authored by Tracy Poulsen collaborative model termed the “FlexBook,” CK-12 intends to pioneer the generation and 8.5" x 11.0" (21.59 x 27.94 cm) distribution of high-quality educational content that will serve both as core text as well as provide Black & White on White paper an adaptive environment for learning. 250 pages ISBN-13: 9781478298601 Copyright © 2010, CK-12 Foundation, www.ck12.org ISBN-10: 147829860X Except as otherwise noted, all CK-12 Content (including CK-12 Curriculum Material) is made Please carefully review your Digital Proof download for formatting, available to Users in accordance with the Creative Commons Attribution/Non-Commercial/Share grammar, and design issues that may need to be corrected. Alike 3.0 Unported (CC-by-NC-SA) License (http://creativecommons.org/licenses/by-nc- sa/3.0/), as amended and updated by Creative Commons from time to time (the “CC License”), We recommend that you review your book three times, with each time focusing on a different aspect. which is incorporated herein by this reference. Specific details can be found at http://about.ck12.org/terms. Check the format, including headers, footers, page 1 numbers, spacing, table of contents, and index. 2 Review any images or graphics and captions if applicable. -
Evidence Against Stabilization of the Transition State Oxyanion by a Pka-Perturbed RNA Base in the Peptidyl Transferase Center
Evidence against stabilization of the transition state oxyanion by a pKa-perturbed RNA base in the peptidyl transferase center K. Mark Parnell*, Amy C. Seila†, and Scott A. Strobel*‡§ Departments of *Molecular Biophysics and Biochemistry, †Genetics, and ‡Chemistry, Yale University, 260 Whitney Avenue, New Haven, CT 06520-8114 Edited by Harry F. Noller, University of California, Santa Cruz, CA, and approved July 16, 2002 (received for review April 8, 2002) The crystal structure of the ribosomal 50S subunit from Haloarcula activity, suggesting that 23S and 5S rRNA may constitute the marismortui in complex with the transition state analog CCdA- bulk of the peptidyl transferase center (8). phosphate-puromycin (CCdApPmn) led to a mechanistic proposal The most unambiguous evidence that the active site of the wherein the universally conversed A2451 in the ribosomal active ribosome is comprised of RNA came from the 2.4-Å crystal site acts as an ‘‘oxyanion hole’’ to promote the peptidyl transferase structure of the Haloarcula marismortui 50S ribosomal subunit reaction [Nissen, P., Hansen, J., Ban, N., Moore, P.B., and Steitz, T.A. reported by Ban et al. (9) and Nissen et al. (10). The structure of the (2000) Science 289, 920–929]. In the model, close proximity (3 Å) 50S subunit complexed with the transition-state analog CCdA- between the A2451 N3 and the nonbridging phosphoramidate phosphate-puromycin (CCdApPmn) was vital to this structural oxygen of CCdApPmn suggested that the carbonyl oxyanion identification. CCdApPmn includes the minimal components of formed during the tetrahedral transition state is stabilized by both peptidyl transferase substrates (11). CCdA binds the P site, and hydrogen bonding to the protonated A2451 N3, the pKa of which puromycin binds the A site (Fig. -
Monoatomic Ions You Should Know
Monoatomic ions you should know Monoatomic Cations Elements that form a single cation Elements that form two or more cations Ion Name Ion Name Common Name + 2+ H hydrogen ion /proton Cr chromium(II) ion Li+ lithium ion Cr3+ chromium(III) ion + 2+ Na sodium ion Fe iron(II) ion ferrous ion + 3+ K potassium ion Fe iron(III) ion ferric ion + 2+ Rb rubidium ion Ni nickel(II) + 3+ Cs cesium ion Ni nickel(III) 2+ + Be beryllium ion Cu copper(I) ion cuprous ion 2+ 2+ Mg magnesium ion Cu copper(II) ion cupric ion 2+ 2+ Ca calcium ion Hg2 mercury(I) ion* mercurous ion Sr2+ strontium ion Hg2+ mercury(II) ion mercuric ion Ba2+ barium ion Sn2+ tin(II) ion stannous ion Al3+ aluminum ion Sn4+ tin(IV) ion stannic ion Zn2+ zinc ion Pb2+ lead(II) ion plumbous ion Ag+ silver ion Pb4+ lead(IV) ion plumbic ion Cd2+ cadmium ion *this is actually a polyatomic ion Monoatomic Anions (all form only single ion) Ion Name Ion Name N3- nitride ion H- hydride ion P3- phosphide ion F- fluoride ion O2- oxide ion Cl- chloride ion S2- sulfide ion Br- bromide ion I- iodide ion Polyatomic ions you should know Formula Name Formula Name - 2- C2H3O2 acetate ion CO3 carbonate ion + - NH4 ammonium ion HCO3 bicarbonate ion 2- 2- CrO4 chromate ion SO4 sulfate ion Cr O 2- dichromate ion HSO - bisulfate ion 2 7 4 - 2- CN cyanide ion SO3 sulfite ion - - HO hydroxide ion HSO3 bisulfite ion 2- - C2O4 oxalate ion ClO4 perchlorate ion - - MnO4 permanganate ion ClO3 chlorate ion - - NO3 nitrate ion ClO2 chlorite ion - - NO2 nitrite ion ClO hypochlorite ion PO 3- phosphate ion 4 2- HPO4 hydrogen phosphate ion - H2PO4 dihydrogen phosphate ion Acids you should know Hydrohalic acids Oxygen containing acids Formula Name Formula Name HF hydrofluoric acid H3PO4 phosphoric acid HCl hydrochloric acid H3PO3 phosphorous acid HBr hydrobromic acid H2SO4 sulfuric acid HI hydroiodic acid H2SO3 sulfurous acid H2CO3 carbonic acid HMnO4 permanganic acid HNO3 nitric acid HNO2 nitrous acid HC2H3O2 acetic acid H2C2O4 oxalic acid HClO4 perchloric acid HClO3 chloric acid HClO2 chlorous acid HClO hypochlorous acid . -
Significant Figures
For students and parents/guardians Table of Contents In the Elements Handbook, you’ll find use- ful information about the properties of the Elements Handbook . 901 main group elements from the periodic table. Hydrogen. 904 You’ll also learn about real-world applications Group 1: Alkali Metals. 906 for many of the elements. Group 2: Alkaline Earth Metals . 910 The Math Handbook helps you review and Groups 3–12: Transition Elements . 916 sharpen your math skills so you get the most Group 13: Boron Group . 922 out of understanding how to solve math prob- Group 14: Carbon Group . .926 lems involving chemistry. Reviewing the rules Group 15: Nitrogen Group . 932 Group 16: Oxygen Group . .936 for mathematical operations such as scientific Group 17: Halogen Group . 940 notation, fractions, and logarithms can also Group 18: Noble Gases . .944 help you boost your test scores. The reference tables are another tool that Math Handbook . .946 will assist you. The practice problems and Scientific Notation . .946 solutions are resources that will help increase Operations with Scientific Notation . 948 your comprehension. Square and Cube Roots . 949 Significant Figures . .949 Solving Algebraic Equations. 954 Dimensional Analysis . 956 Unit Conversion . 957 Drawing Line Graphs. 959 Using Line Graphs . .961 Ratios, Fractions, and Percents. 964 Operations Involving Fractions . .965 Logarithms and Antilogarithms. 966 Reference Tables. 968 R-1 Color Key. 968 R-2 Symbols and Abbreviations. 968 R-3 Solubility Product Constants . 969 R-4 Physical Constants . .969 R-5 Names and Charges of Polyatomic Ions . 970 R-6 Ionization Constants . .970 R-7 Properties of Elements. -
CHEM 1411 Nomenclature Homework - Answers Part I
1 CHEM 1411 Nomenclature Homework - Answers Part I 1. The following are a list of binary and pseudobinary ionic compounds. Write the name when the formula is given. Write the formula when the name is given. (a) AlCl3 aluminum chloride (k) rubidium oxide Rb2O (b) AuBr3 gold (III) bromide (l) chromium (III) selenide Cr2Se3 (c) Na2S sodium sulfide (m) barium iodide BaI2 (d) Cu3P2 copper (II) phosphide (n) copper (I) fluoride CuF (e) Fe(OH)2 iron (II) hydroxide (o) copper (II) fluoride CuF2 (f) NH4OH ammonium hydroxide (p) strontium cyanide Sr(CN)2 (g) Co(CH3COO)3 cobalt (III) acetate (q) mercury (II) bromide HgBr2 (h) Zn(SCN)2 zinc thiocyanate (r) mercury (I) bromide Hg2Br2 (i) CaCrO4 calcium chromate (s) magnesium permanganate Mg(MnO4)2 (j) K2Cr2O7 potassium dichromate (t) lithium nitride Li3N 2. The following are lists of covalent compounds. Write the name when a formula is given. Write the formula when given a name. (a) CSe2 carbon diselenide (h) dichlorine heptoxide Cl2O7 (b) SF6 sulfur hexafluoride (i) xenon tetrafluoride XeF4 (c) BrF5 bromine pentafluoride (j) carbon monoxide CO (d) P4O10 tetraphosphorous decoxide (k) oxygen O2 (e) Cl2O dichlorine oxide (l) diboron trioxide B2B O3 (f) NH3 ammonia (m) arsenic trifluoride AsF3 (g) N2 dinitrogen or nitrogen (n) diiodine I2 2 3. The following are lists of acids or acid-forming compounds. Write the name when the formula is given. Write the formula when the name is given. (a) H3PO2 hypophosphorous acid (k) hydrogen cyanide HCN (g) (b) H2SO4 sulfuric acid (l) periodic acid HIO4 (c) HClO hypochlorous acid (m) hypochlorous acid HClO (d) H3PO4 phosphoric acid (n) nitric acid HNO3 (e) HBrO4 perbromic acid (o) acetic acid CH3CO2H (f) HIO2 iodous acid (p) chloric acid HClO3 (g) HI (g) hydrogen iodide (q) perbromic acid HBrO4 (h) HI (aq) hydroiodic acid (r) hydrofluoric acid HF (aq) (i) HCN (aq) hydrocyanic acid (s) phosphorous acid H3PO3 (j) HBrO hypobromous acid (t) hydrosulfuric acid H2S (aq) 4. -
WO 2016/196440 Al 8 December 2016 (08.12.2016) P O P C T
(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date WO 2016/196440 Al 8 December 2016 (08.12.2016) P O P C T (51) International Patent Classification: (81) Designated States (unless otherwise indicated, for every A61P 3/04 (2006.01) A61K 33/40 (2006.01) kind of national protection available): AE, AG, AL, AM, A61P 9/10 (2006.01) A61K 38/44 (2006.01) AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, A61K 35/74 (2015.01) A61K 31/17 (2006.01) BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, (21) International Application Number: HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, PCT/US20 16/034973 KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, (22) International Filing Date: MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, 3 1 May 2016 (3 1.05.2016) PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, (25) Filing Language: English TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (26) Publication Language: English (84) Designated States (unless otherwise indicated, for every (30) Priority Data: kind of regional protection available): ARIPO (BW, GH, 62/169,480 1 June 2015 (01 .06.2015) US GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, 62/327,283 25 April 2016 (25.04.2016) US TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, (71) Applicant: XENO BIOSCIENCES INC. -
Contaminants – Food Compendium
Solutions that meet your demands for food safety testing Excellent choices for food applications Contaminants Acrylamides > Return to Table of Contents > Search entire document Gas Chromatography/Mass Spectrometry Approaches to the Analysis of Acrylamide in Foods Application Food Safety Author Introduction Bernhard Rothweiler The discovery announced in April 2002 by scien- Agilent Technologies tists at Sweden’s National Food Administration of Deutschland GmbH acrylamide (2-propenamide) in fried and baked Hewlett-Packard Strasse 8 foods at levels many times that allowed in water 76337 Waldbronn suggested a much higher exposure than previously Germany estimated [1-3]. Acrylamide (Figure 1), a known neurotoxin, is considered a probable human car- Eberhardt Kuhn cinogen. The World Health Organization considers Agilent Technologies, Inc. 0.5 µg/L the maximum level for acrylamide in 91 Blue Ravine Road water. However, foods such as french fries, baked Folsom, CA potato chips, crisp breads, and other common USA cooked foods, were found to contain acrylamide Harry Prest between 100 and 1000 µg/kg. Acrylamide was not found in the raw foodstuffs and cooking by boiling Agilent Technologies, Inc. produced no detectable levels. Recent work has 5301 Stevens Creek Blvd. suggested that acrylamide forms via the Maillard Santa Clara, CA reaction, which occurs when amino acids and USA sugars (for example, asparagine and sucrose) are heated together [4]. The concern over these rela- Abstract tively high concentrations has led to studies of the occurrence of acrylamide in a wide variety of Discovery of acrylamide in cooked foods has required an foods. examination of foods for potential exposure. A classic H O approach employs extracting acrylamide from the food with water and converting the acrylamide to brominated H H2N derivatives. -
Extreme Environments and High-Level Bacterial Tellurite Resistance
microorganisms Review Extreme Environments and High-Level Bacterial Tellurite Resistance Chris Maltman 1,* and Vladimir Yurkov 2 1 Department of Biology, Slippery Rock University, Slippery Rock, PA 16001, USA 2 Department of Microbiology, University of Manitoba, Winnipeg, MB R3T 2N2, Canada; [email protected] * Correspondence: [email protected]; Tel.: +724-738-4963 Received: 28 October 2019; Accepted: 20 November 2019; Published: 22 November 2019 Abstract: Bacteria have long been known to possess resistance to the highly toxic oxyanion tellurite, most commonly though reduction to elemental tellurium. However, the majority of research has focused on the impact of this compound on microbes, namely E. coli, which have a very low level of resistance. Very little has been done regarding bacteria on the other end of the spectrum, with three to four orders of magnitude greater resistance than E. coli. With more focus on ecologically-friendly methods of pollutant removal, the use of bacteria for tellurite remediation, and possibly recovery, further highlights the importance of better understanding the effect on microbes, and approaches for resistance/reduction. The goal of this review is to compile current research on bacterial tellurite resistance, with a focus on high-level resistance by bacteria inhabiting extreme environments. Keywords: tellurite; tellurite resistance; extreme environments; metalloids; bioremediation; biometallurgy 1. Introduction Microorganisms possess a wide range of extraordinary abilities, from the production of bioactive molecules [1] to resistance to and transformation of highly toxic compounds [2–5]. Of great interest are bacteria which can convert the deleterious oxyanion tellurite to elemental tellurium (Te) through reduction. Currently, research into bacterial interactions with tellurite has been lagging behind investigation of the oxyanions of other metals such as nickel (Ni), molybdenum (Mo), tungsten (W), iron (Fe), and cobalt (Co). -
Speed Accuracy Productivity
Solutions that meet your demands for: speed accuracy productivity Excellent choices for environmental applications Productivity Tools Applications > Return to Table of Contents > Search entire document Integrated Second Peristaltic Pump for Improved Sample Throughput and Reduced Matrix Effects Technical Overview Introduction Second Peristaltic Pump Option As a simpler, less expensive alternative to Agilent’s Based on the input of dozens of ISIS users, Agilent Integrated Sample Introduction System (ISIS), the decided to introduce a simplified, more economi- Second Peripump Option permits both rapid cal solution for rapid sample uptake and constant sample uptake and constant flow nebulization for flow nebulization: a computer-controlled second improved throughput and matrix tolerance and is peristaltic pump that is fully compatible with fully compatible with all the most recent hardware recent software and hardware enhancements to and software improvements on the 7500 Series improve matrix tolerance and productivity. ICP-MS. The second peristaltic pump option works seam- Uncoupling Sample Uptake from Sample Nebulization lessly with both Pre-emptive and Intelligent Rinse functions, as well as with the new High Matrix With the introduction of its ISIS in 1999, Agilent Sample Introduction (HMI) accessory. The result is pioneered the use of constant flow nebulization in simple, fully integrated, high sample throughput ICP-MS. By uncoupling the sample uptake rate for even the most difficult samples, with no danger (using a separate, high-capacity peristaltic pump) of plasma overloading or sample carryover. from the nebulizer flow rate (using a small, close- coupled peristaltic pump), very high sample throughput could be achieved without the concur- Nebulizer Nebulizer rent overloading of the sample introduction system pump and plasma.