Chem 210

Bronsted-Lowry Acid Must Have a Proton (H) Bronsted-Lowry Base Must have Lone Pairs or Pi Bonds Neutralization Strong Acid donates a proton to the Strong Base to generate Water and the Conjugate Base Electrophile Electron Loving An atom that wants electrons. An atom that is electron rich. Must have a partial positive charge. (Cation) Nucleophile Nucleus Loving If opposites attract, then a _________ is electron rich. Must have a partial negative charge. (An...

What is the chemical symbol for an atom that has 29 protons and 36 neutrons? A) Cu B) Kr C) N D) Tb E) S A) Cu How many SO2 molecules are there in 1.80 mol of SO2? A) 1.08 X 10^23 molecules SO2 B) 6.02 x 10^24 molecules SO2 C) 1.80 x 10^24 molecules SO2 D) 1.08 x 10^24 molecules SO2 E) 6.02 x 10^23 molecules SO2 D) 1.08 x 10^24 1.80 mol SO2 X 6.022x10^23 SP2 moles/1 mol SO2 = D One of the choices below, which one is NOT an ionic compound? (Molecular Compound...

The fundamental SI unit of mass is the kilogram What symbol is used to express the factor 10^-6 weird u If the melting point of titanium metal is 1672 C, what is the melting point in Kelvins? 273+1672= 1945K The nutritional calorie (abbreviated Cal) is equal to 1 kcal A student measured the diameter of a sphere and determined the average value. His measurements are 5.17cm, 5.16cm, 5.16cm, and 5.17cm. If the true diameter is 6.18cm, what can be said about the stude...

Chemistry the study of matter and the changes that matter undergoes Matter Anything that has a mass and occupies space Observations Natural phenomena and measured events; if universally consistent, can be stated as a law Hypothesis Tentative explanation that explains observations Experiment Procedure to test hypothesis; measures one variable at a time Model (Theory) Set of conceptual assumptions that explains data from accumulated experiments; predicts re...

Calculate volume 0.2 NaOH and # equivalence points for titration of 25mL 0.1 H3PO4 2 eq points- 0.1M x 0.025L = 0.0025 mol H3PO4 mol H3PO4 = mol added NaOH 0.0025 mol NaOH / 0.2 M = 0.0125 L NaOH added Calculate equivalence point volumes for titration of 25.00 mL of 0.060 M HCl and 0.10 M H3PO4 with 0.075 M NaOH exp 1 calculations find moles total acid, response factor Coefficient that makes the relative response of a detector to analyte and the internal standard the same. ...

If the fuel efficiency of an automobile is 22 miles per gallon, what is its fuel efficiency in Kilometers per liter? ( 1Km= 0.621 mile, 1.00 L=1.057 quarts and 4 quarts = 1 gallon) 9.4 Km/L *What is the correct answer to the following expression: (49.1 - 42.61 ) x 13.1? 85 An intensive property of a substance is independent of amount. True Lithium has two stable isotopes with masses of 6.01512 amu and 7.01600 amu. The average atomic mass of Li is 6.941 amu. What is the p...

Highest: Nh3 SbH3 AsH3 PH3 The hydrides of group 5A are NH3, PH3, AsH3, and SbH3. Arrange them from highest to lowest boiling point. Dispersion What is the strongest type of intermolecular force present in H2? Co2 Identify the compound that does not have dipole-dipole forces as its strongest force. 1 and 2 Which of the following must be overcome during the boiling of acetonitrile, CH3CN? 1. dispersion forces 2. dipole-dipole forces 3. hydrogen bonds I>III&gt...

What phase change is taking place if DHsub = 26.1 kJ/mol is being used to calculate the heat involved in the process) 1)Liquid to solid 2) Gas to solid 3) Solid to liquid 4) Liquid to gas 5) Solid to gas 3 Diethyl ether, (CH3CH2)2O , used as a solvent for extraction of organic compounds from aqueous solutions, has a high vapor pressure which makes it a potential fire hazard in laboratories in which it is used. How much energy is released when 10 g is cooled from 50.0°C to 10.0°C...

Chemistry Definition Matter, its properties, and its behavior. Filtration Solid substances are separated from liquids and solutions. Distillation Uses differences in boiling points of substances to separate a homogeneous mixture into its components. Chromatography Separates substances on basis of differences in solubility in a solvent. Temperature Measure of average kinetic energy of the particles in a sample. Accuracy Proximity of measurement to the true...

Molarity moles of solute/liters of solution mole fraction moles of A/total moles solute + moles solvent mass percentage mass of solute/mass of solution x 100% mass of solution solute+solvent ppm mass of solute/mass of solution x 10^6 ppb mass of solute/mass of solution x 10^9 volume percentage vol of component/total volume x 100 molality moles of solute/kg of solvent ** denominator does not include mass of solute Ionization Energy The amount of...