Chemistry

GENERAL CHEMISTRY 1305 QUESTIONS & ANSWERS A group of covalently bonded atoms that has an overall electrical charge is called a(n) - CORRECT ANSWER - polyatomic ion A polar bond is found in which of these compounds? a) H2O b) F2 c) NaCl d) H2 e) N2 - CORRECT ANSWER - a) H2O A(n) ___________...

General Chemistry Questions & Answers Absorption frequency - CORRECT ANSWER - Each atom has a characteristic absorption frequency at which it absorbs energy acid dissociation constant - CORRECT ANSWER - Ka = [H3O+][A-]/[HA] Since stronger acids dissociate more readily, the dissociation reaction ...

General Chemistry Questions & Answers 1000L in m^3 - CORRECT ANSWER - 1000L = 1m^3 1L in cm^3 - CORRECT ANSWER - 1L = 1000cm^3 1mL in cm^3 - CORRECT ANSWER - 1mL = 1cm^3 Acidity - CORRECT ANSWER - - Measure of how well a compound donates protons. Bottom Right are most acidic. Adding Electrons ...

General Chemistry Questions & Answers "ICE" Tables - CORRECT ANSWER - Initial, Change, Equilibrium --can disregard x in reactant when Kc < 10^-3 `Polymers - CORRECT ANSWER - molecules that consist of a single unit (monomer) repeated many times 1 cm^3= ___ - CORRECT ANSWER - 1 mL 1. Calcul...

GENERAL CHEMISTRY I QUESTIONS & ANSWERS * See Exam Review 1 (#5) - CORRECT ANSWER - ... * See Exam Review 1 (#6) - CORRECT ANSWER - ... #124 - CORRECT ANSWER - ... 1.6x10^-19 coulombs - CORRECT ANSWER - This is the magnitude of the charges on a proton and an electron plus the unit 2 - CORRECT ...

General Chemistry Questions & Answers A flow of electrons from one place to another - CORRECT ANSWER - Conductivity A liquid with a very tiny molecule will be less viscous due to its mobility - CORRECT ANSWER - Liquid water molecules A U-shaped tube with a moving column of liquid - CORRECT ANSWE...

General Chemistry Questions & Answers - CORRECT ANSWER - All carbonate, phosphates, sulfides, and sulfites are insoluble, with the exception of the alkali metals and ammonium - CORRECT ANSWER - All chlorides bromides and I would guides are water-soluble with the exception of a G plus, PB2 plus, ...

General Chemistry Final Questions & Answers ____ states that, electrons will not join other electrons in an orbital if an empty orbital of the same energy is available. - CORRECT ANSWER - Hund's rule 2500 liters of oxygen gas is produced at 1.00 atm of pressure. It is to be compressed and stored...

MCAT General Chemistry Questions & Answer ____ acid and _____ base titrations have equivalence points at pH < 7 - CORRECT ANSWER - weak base, strong acid ____ acid and _____ base titrations have equivalence points at pH = 7 - CORRECT ANSWER - strong acid, strong base ____ acid and _____ base...

General Chemistry Questions & Answers =-RT lnKeq - CORRECT ANSWER - What are the equations for reaction Q? 1/2000 of a proton - CORRECT ANSWER - What is the mass of an electron? A= Aoe^(-kt) - CORRECT ANSWER - What is the formula for radioactive decay? Accurate - CORRECT ANSWER - close to the in...

Chemistry General Midterm Questions & Answers A cube of iron at 20 C is placed in contact with a cube of copper at 60. Which statement describes the initial flow of heat between the cubes? - CORRECT ANSWER - Heat flows from the copper cube to the iron cube. A mixture of crystals of salt and suga...

General Chemistry Questions & Answers Acid Dissociation Constant, K(a) - CORRECT ANSWER - Equilibrium constant for an acid in water. HA + H2O --> A- + (H3O)+ K(a) = [H3O+][A-]/[HA] Acid Strength of Molecular Structure - CORRECT ANSWER - Molecular structure determines whether or not a molecu...

General Chemistry Knowledge Questions & Answers actinide series - CORRECT ANSWER - (chemistry) a series from actinium to lawrencium of 15 radioactive elements with increasing atomic numbers alkali metals - CORRECT ANSWER - Group 1, 1 electron in outer level, very reactive, soft, silver, shiny, l...

General Chemistry Questions & Answers 0th law of thermodynamics - CORRECT ANSWER - if 2 systems are both in thermal equilibrium with a 3rd system, then the 2 initial are in thermal equilibrium with one another - thermal equilibrium = temp stays the SAME - link btwn temp and heat 1st law of ther...

General Chemistry Questions & Answers 6.02 x 10^23 - CORRECT ANSWER - Avogadro's number Acetate - CORRECT ANSWER - C2H3O2- activation energy - CORRECT ANSWER - increase in energy required to transform a reactant into a necessary transition state for product formation actual yield - CORRECT ANS...

General Chemistry Final Exam- Questions & Answers Atomic Radius - CORRECT ANSWER - Distance from the nucleus to the outermost electron. Avogadro's Law - CORRECT ANSWER - Volume of a gas is directly proportional to the number of moles at constant temperature and pressure. Balancing Equations - C...

DAT General Chemistry Questions & Answers -log(0.01) = - CORRECT ANSWER - 2 :) - CORRECT ANSWER - You can do it! Keep going! 1. _______ produce basic solutions in water. 2. ___________ produce acidic solutions in water. - CORRECT ANSWER - 1. Metal oxides produce basic solutions in water. 2. No...

General Chemistry Questions & Answers A 25.0 mL solution of 0.2 M acetic acid (pKa = 4.76) is mixed with 50 mL of 1.0 M sodium acetate (pKb = 9.24). What is the final pH? A) 4.8 B) 5.8 C) 9.2 D) 10.2 - CORRECT ANSWER - B (CHEM257) A 36 gram sample of water requires 93.4 kJ to sublime. What ar...

General Chemistry Questions & Answers Adhesion - CORRECT ANSWER - An attraction between molecules of different substances Arrhenius acid - CORRECT ANSWER - substance that contains hydrogen and yields hydrogen ions in aqueous solution. Arrhenius base - CORRECT ANSWER - substance that contains hyd...

General Chemistry Questions & Answers - CORRECT ANSWER - Using combining rules to calculate: (313.44-209.1)*8.2234 How many SF? "A" column - CORRECT ANSWER - main group elements "B" column - CORRECT ANSWER - transition metal (1*65.38g/mol)*(2*35.45g/mol)=136.28g/mol %Cl= (mass of Cl/ Mass...

General Chemistry Questions & Answers (first) ionization energy - CORRECT ANSWER - amount of energy necessary to remove the least tightly bound electron from an isolated atom ∆G - CORRECT ANSWER - changes with changing reaction composition until it reaches zero ∆Gº - CORRECT ANSWER - descri...

General Chemistry Questions & Answers Acid dissociation constant - ANSWER: the ratio of the concentration of the dissociated form of an acid to the concentration of the undissociated form Adiabatic process - ANSWER: exchange no heat with the environment Alkali metals - ANSWER: any metal in Group...

General Chemistry Questions & Answers - change in color - change in temperature - light is given off - gas is given off - precipitate - change in voltage - ANSWER: Chemical reactions - melting/boiling point - odor, color, taste - solubility - density - hardness/softness - volatility - d...

General Chemistry Questions & Answers _________ means the loss of electrons (gain charge) - ANSWER: Oxidation __________ cell involves an electric current used to drive a non- spontaneous rxn. - ANSWER: Electrolytic ___________ means thr gain of electrons ( loss charge) - ANSWER: Reduction A fl...

General Chemistry Review Questions & Answers Accuracy - CORRECT ANSWER- How close a given value is to the true value. Atomic Number (Z) - CORRECT ANSWER- The number of protons and electrons in a neutral atom. Unique for each element. Ex. Carbon is atomic number 6. It contains 6 protons and 6 ele...

General Chemistry Chapter 1 Questions & Answers accuracy - CORRECT ANSWER- refers to how close to the true value a given measurement is centimeter - CORRECT ANSWER- cm;1cm=0.01m, a bit less than half and inch chemical properties - CORRECT ANSWER- characteristics that do involve a change in chemi...

General Chemistry Questions & Answers "ICE" Tables - CORRECT ANSWER- Initial, Change, Equilibrium --can disregard x in reactant when Kc < 10^-3 `Polymers - CORRECT ANSWER- molecules that consist of a single unit (monomer) repeated many times 1 cm^3= ___ - CORRECT ANSWER- 1 mL 1. Calculati...

General Chemistry Questions & Answers CH-13 Activated complex - CORRECT ANSWER- A chemical species with partially broken and partially formed bonds; Always high in energy because of its partial bonds Also referred to as the transition state Activation energy (Ea) - CORRECT ANSWER- The extra ener...

OAT General Chemistry Questions & Answers 1 atm - CORRECT ANSWER- 760 mmHg and 760 Torr and 10^5 Pa 1 Calorie - CORRECT ANSWER- 4.184 J A molecule with 2 electron pairs and 0 non-bonding pairs will have what geometric shape and angle? - CORRECT ANSWER- Linear 180 degrees Example: BeCl2 A mole...

General chemistry Questions & Answers - CORRECT ANSWER2Al2O3(s) → 4Al(s)+3O2(g), ΔH = +801 kcal (+3350 kJ ) How many kilocalories are required to produce 1.96 mol of aluminum? - CORRECT ANSWER- 392 kilocalories divide the given change in heat by the mole of 4Al and then multiply with the one ...

ACS Chemistry general Exam Questions & Answers 1 atm = ? kPA? - CORRECT ANSWER- 101.325 1 L - CORRECT ANSWER- = 1 dm^3 1000 mL 2 electron domains results in what type of hybridization? - CORRECT ANSWER- sp 6 electron domains results in what type of hybridization? - CORRECT ANSWER- Sp3d2 a doub...

General Chemistry Nomenclature Questions & Answers Acetate - CORRECT ANSWER- C2H3O2 (1-) Acetic Acid - CORRECT ANSWER- HC2H3O2 Bicarbonate - CORRECT ANSWER- HCO3 (1-) Bisulfate - CORRECT ANSWER- HSO4 (1-) Bromate - CORRECT ANSWER- BrO3 (1-) Bromide - CORRECT ANSWER- Br (1-) Bromite - CORRECT ...

General Chemistry Questions & Answers 1 amu = - CORRECT ANSWER- 1 g/mol 1 Mole = _________ L - CORRECT ANSWER- 22.4 L 3.75 moles of nitrogen gas is held in a rubber balloon with a current volume of 1 L. The balloon is placed in a room with an initial pressure of 1 atm and temperature of 25°C. I...

General Chemistry II Questions & Answers __________ are used in automotive catalytic converters. Homogeneous catalysts Noble gases Nonmetal oxides Enzymes Heterogeneous catalysts - CORRECT ANSWER- Heterogeneous catalysts A 0.1 M solution of which salt is the most basic? NaNO3, NaClO4, NaHSO4...

General Chemistry Principles Questions & Answers 1st order reactions - CORRECT ANSWER- rate = k[A] ln[A] vs time is a decreasing linear line if concentration doubles and rate doubles it is 1st order 2nd order - CORRECT ANSWER- rate = k[A]^2 1/[A] vs time is a decreasing linear line if con doub...

ACELLUS GENERAL CHEMISTRY QUESTIONS & ANSWERS (?) describes the forces that exist between like molecules in a liquid. - CORRECT ANSWERCohesion (?) describes the substance of minor percentage, the one being dissolved, in a homogeneous mixture. - CORRECT ANSWER- solute (?) describes the temperatur...

General Chemistry DAT Questions & Answers - Simple Cubic has ____ atom per unit cell - Body-centered cubic has _____ atoms per unit cell - Face-centered cubic has _______ atoms per unit cell - CORRECT ANSWER1 2 4 -∆Srxn indicates..... - CORRECT ANSWER- that your products are more ORDERED tha...

General Chemistry Questions & Answers (-) G - CORRECT ANSWER- Spontaneous rxn Reverse rxn is not spontaneous (+) G - CORRECT ANSWER- Rxn is not spontaneous Reverse rxn is spontaneous Actinide Series - CORRECT ANSWER- Actinide Series Heavy Rare Metal Activation energy - CORRECT ANSWER- Minimum...

General Chemistry 2 Questions & Answers ... - CORRECT ANSWER- Explain the difference between average rate of reaction and instantaneous rate? Acetic acid (weak acid) - CORRECT ANSWER- HC₂H₃O₂ acid ionization constant (Ka) - CORRECT ANSWER- the equilibrium constant for a reaction in which ...

DAT Bootcamp General Chemistry Questions & Answers Alkali metals - CORRECT ANSWER- group 1A low ionization energy form ionic bonds Alkaline earth metals - CORRECT ANSWER- group 2A low ionization energy allotrope - CORRECT ANSWER- elemental molecule with different formulas, example: O2 and O3 ...

General Chemistry Questions & Answers affinity chromatography - CORRECT ANSWER- based on: binding to specific ligands mobile phase: buffer solution stationary phase: target analyte elute first: everything but target alpha decay - CORRECT ANSWER- usually occurs with a heavier original atom rele...

REVIEW of General Chemistry Questions & Answers How many valence electrons does cesium have? - CORRECT ANSWER- 1 VE (Group 1A) How many valence electrons does Francium have? - CORRECT ANSWER- 1 VE (Group 1A) How many valence electrons does rubidium have? - CORRECT ANSWER- 1 VE (Group 1A) How ...

General Chemistry Questions & Answers Advantages and disadvantages of catalysts - CORRECT ANSWER- Advantages: -cost effective : less money for the catalyst than purchasing the enrgy require (temp or pressure) -reduced burning of fossil fuels : lesser temperature and pressure required through comb...

General Chemistry 1 Questions & Answers 1 atm in mmHg - CORRECT ANSWER- 760 mmHg accuracy - CORRECT ANSWER- A description of how close a measurement is to the true value of the quantity measured. Acetic acid - CORRECT ANSWER- HC2H3O2; weak acid acid ionization - CORRECT ANSWER- reaction of an a...