ALERT: Utility/Power Failure on Campus – UPDATE

June 11, 2025 - 11:28 AM

UPDATE: Utility/Power Failure on Campus

Meadville Water Authority is just completing the the main water line repair on the north side of campus and and the water line should be pressurized shortly.

CAUTION FROM THE WATER AUTHORITY: A loss of positive water pressure is a signal of the existence of conditions that could allow contamination to enter the distribution system through back-flow by back‑pressure or back‑siphonage. As a result, there is an increased chance that the water may contain disease-causing organisms.

DO NOT DRINK THE WATER WITHOUT BOILING IT FIRST. Bring all water to a rolling boil, let it boil for one minute, and let it cool before using; or use bottled water. You should use boiled or bottled water for drinking, making ice, washing dishes, brushing teeth, and food preparation until further notice. Inadequately treated water may contain disease-causing organisms. These organisms include bacteria, viruses, and parasites, which can cause symptoms such as nausea, cramps, diarrhea, and associated headaches. These symptoms, however, are not caused only by organisms in drinking water, but also by other factors. If you experience any of these symptoms and they persist, you may want to seek medical advice. Guardians of infants and young children and people at increased risk, such as pregnant women, some of the elderly, and people with severely compromised immune systems, should seek advice from their health care advisors about drinking this water. General guidelines on ways to lessen the risk of infection by microbes are available from EPA’s Safe Drinking Water Hotline at 1 (800) 426‑4791.

The Water Authority will inform local residents when the water is safe to drink. An updated message Emergency Message will be sent from Public Safety.

Students, faculty and staff should monitor e-mail, the college web site, social and local media for updated information and further updates.
Contact Campus Safety in the event of an emergency: 814-332-3357.

More information on Emergency website

Annotated Web Links

Topics

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Buffers

  • Buffers for pH Control
    by Rob Beynon, University of Manchester Institute of Science and Technology
    Provides recipes for making buffers of desired pH provided ionic strength and temperature of reagents is given.
  • pH meter and pH measurements
    Marcin Borkowski
    All you want to know about pH meters, pH measurements and pH electrodes. Introduction to history, theory and good practice, reliable measurements and electrode maintenance. Links to models and manufacturers.

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Calculators

  • % Yield
    by Mark Winter, University of Sheffield
    Site gives percent yield of a product if quantities of reactant and product are known.
  • Conversion Factors for Energy Equivalents
    by National Institute of Standards and Technology, US Gov.
    Site provides conversion equations and correlation coefficients for pairs of constants.
  • Formula Weight and Mass %
    Site contains calculators for isotope patterns, elemental percentages, and % yield.
  • Unit Conversion – Online Calculator
    Online conversions between different metrics of length, weight, temperature, pressure, energy, frequency and more.

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Databases

  • ChemID Plus
    Provided by National Library of Medicine
    Database of over 380,000 chemicals, synonyms, structures, regulatory list information, and links to other databases
  • DTP / 2D and 3D Structural Information
    Provided by the National Cancer Institute
    The NCI has collected information on almost half a million structures in the past forty years. The collections of structural information are freely available.
  • EAFUS: A Food Additive Database
    Provided by US Food and Drug Administration
    Contains administrative, chemical and toxicological information on over 2000 substances directly added to food.
  • ECOTOX Database
    Provided by US EPA
    ECOTOX (ECOTOXicology) database provides single chemical toxicity information for aquatic and terrestrial life.
  • NIST Scientific and Technical Databases
    Provided by National Institute of Standards and Technology
    Access page to a variety of scientific and technical databases

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General Chemistry

  • Analytical Chemistry Forum
    Analytical Chemistry Forum for chemists and students alike
  • Chem Web
    Site provides links to journals, free abstracts, jobs and internships, and chemistry tools including NMR prediction and IUPAC naming. Free registration.
  • NIST Chemistry Handbook
    by National Institute of Standards and Technology, US. Gov.
    Site provides a searchable database of general chemistry information including formula, name, CAS registry number, author, and structure. It also provides physical properties of materials. (This might be particularly helpful to organic chemistry students.)
  • Preparation for Topics in College Chemistry
    chemreview.net
    Site provides a good review of general chemistry topics and also gives mini lectures to help understand difficult topics. Use this as a review to help prepare for a chemistry test.
  • Titration
    Dr. Yue-Ling Wong
    Site provides a titration simulator with different concentrations of acids and bases.

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Instructor Resources

  • Instructional Resources for Chemistry
    by Steven Lower, Simon Frasier University
    Site provides links to chemistry education sites.
  • The IrYdium Project
    by Carnegie Mellon University
    Site provides a variety of applets and concept tests which contain conceptual questions dealing with equilibrium, thermodynamics, and kinetics.

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Lewis Structures

  • Counting Electrons
    by Mark Winter, University of Sheffield
    Site provides explanations of predicted molecular geometry using VSPRE Theory. Site has links to a tutorial and practice exercises.

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Light and Matter

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Other

  • Chemistry Guide
    Chemistry Guide – comprehensive listing of quality chemistry sites on the Internet.
  • Chemistry Link
    WWW Chemistry Guide – comprehensive and evaluated guide to web sites related to chemistry and the chemical industry. Its mission consists
    in collecting and independently annotating all useful chemistry sites.
  • Hybridization
    Site provides a great interactive explanation of atomic orbital hybridization.
  • National Mole Day
    National Mole Day Foundation, Inc.
    National Mole Day Foundation, Inc. site

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Periodic Tables

  • Chemicool Periodic Table
    Table provides each element’s physical properties and ionization energies.
  • Electron Configurations
    by Carnegie Mellon University
    Site provides limited data on the elements, but also provides well-done electronic configurations of the elements.
  • Periodic Table
    Periodic table displays discoverer, atom weights, electron shells, and valence patterns of each element.
  • Periodic Table of Elements and Data
    Unknown
    Site provides a useful periodic table. Also by clicking on an element, informations about the element will appear. This includes atomic mass, melting point, boiling point and even a history of the element.
  • Periodic Table.com
    Alexander Design
    Site provides a number of periodic tables.
  • Visual Elements Periodic Table
    Royal Society of Chemistry
    Flash enabled Chemical Society periodic table of elements.
  • Web Elements Interactive Periodic Table
    by Mark Winter, University of Sheffield
    Site provides pages about isotope patterns, element percentages, yield, oxidation states, electron states, electron counts, VSPRE, and MLXZ for compounds.

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Physics

  • Constants
    by National Institute of Standards and Technology

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SI Naming System

  • SI Naming Tutorial
    by National Institute of Standards and Technology, US Gov.
    Site gives rules, definitions, and the history of the units in the SI naming system.

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Stoichiometry

  • Chemical Reaction Stoichiometry
    by Smith, Sikenata, and Missen, University of Guelph
    Site provides tutorial and Java applications for solving stoichiometry problems using the matrix reduction method. Requires Adobe Acrobat.
  • Limiting Reagents
    by Carnegie Mellon University
    Site provides a good visual representation of limiting reagents using the example of ammonia and carbon dioxide.
  • Stoichiometry Equilibrium
    by Carnegie Mellon University
    Site gives molar and mass quantities of reactants and products of iodine, hydrogen, and hydrogen iodide at various points of the reaction.

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Structure of Atoms

  • Atomic Orbitals
    Site gives a brief description of atomic orbitals and contains an Orbital Viewer for drawing orbitals.
  • Isotope Patterns
    by Mark Winter, University of Sheffield
    Site displays a bar graph of formula weights resulting from isotopes in formula.
  • Metal/Ligand/Atom/Anions
    by Mark Winter, University of Sheffield
    Site gives metal, ligand, atom, and anion designations for compounds.

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VSEPR Theory

  • Molecular Structure Calculations
    Paul J. Schupf
    Provides calculations for bond lengths, atomic charges and dipole moments. Also illustrates the best Lewis structure possible in 3-D. There is a calculator at the end used to create your own molecule that is not listed on the page.
  • Valence Shell Electron Pair Repulsion Theory
    by Mark Winter, University of Sheffield
    Site provides explanations of predicted molecular geometry using VSEPR Theory. (Includes practice exercises.)
  • VSEPR Help Page
    Purdue University
    Site provides the rules of VSEPR Theory and a tutorial for using VSEPR Theory. It also provides practice problems.
  • VSEPR Tutorial
    by John Nash, Purdue University
    Site provides useful, but limited tutorial on VSPRE Theory. Tutorial, glossary, and practice problems are also available.