- Study guides, Class notes & Summaries

Chemical Formulas - Answer Represent a compound Molecular Formulas - Answer Shows the actual numbers and kinds of atoms in one molecule Empirical Formula - Answer Shows the smallest, whole number ratio of atoms to one molecule Determining the empirical formula of Zinc Chloride - Answer Dissolve a known mass of Zinc Chloride in a measured volume of water, then determine the zinc content of the resulting solution by titration Titration - Answer Measuring the the volume o...

reduction _______ of electrons - Answer gain oxidation ________ of electrons - Answer loss oxidizing agent - Answer substance that undergoes reduction reducing agent - Answer substance that undergoes oxidation What is the oxidation number for elements in their elemental form? - Answer 0 What is the oxidation number for atoms in group 1A? - Answer +1 What is the oxidation number for atoms in group 2A? - Answer +2 What is the oxidation number for hydrogen ...

reaction rate - Answer -change in concentration of either a reactant or product over time -the increase in the concentration of a product per unit time or the decrease in the concentration of a reactant per unit time chemical kinetics - Answer the area of chemistry concerned with reaction rates and the sequence of steps by which reactions occur instantaneous rate - Answer the rate at a specific time during the reaction initial rate - Answer the instantaneous rate at the beg...

In extraction, solid components are separated from each other by adding a specific solvent which _______ only one component, which is then found in the _______ following filtration. - Answer dissolves and filtrate In filtration, the liquid which passes through filter paper is called ______; the material remaining in the paper is ______. - Answer Filtrate and Residue Consider the following components which might appear in a mixture to be separated: CaCO3, CaSO4, Ca(NO3)2. Which one ca...

solubility - Answer max mass of a substance dissolving in a particular solvent through a process known as dissolution. Depends on both physical and chemical properties. likes dissolve likes - Answer polar compounds dissolve in polar solvents. nonpolar substances dissolve in nonpolar solutes water as a universal solvent - Answer due to its polar nature. polar covalent OH bond. bent molecular geometry makes O partially negative and H partially positive. polarity - Answer arise...

What are the two characteristics or gases in terms of shape and volume - Answer Gases have an indefinite shape and an indefinite volume What is kinetic theory of gases - Answer Molecules move about randomly at high acceleration due to collision between the molecules/atoms. T or F, Force has a positive correlation with pressure - Answer True, As force goes up pressure goes up. What are the five major units of pressure - Answer Torr, mmHg, atm, pascals, psi 1 atm = ________...

Value of K when DeltaGrxn= 1-200kj - Answer K=(-) Value of K when DeltaGrxn=0 - Answer K=1 Value of K when DeltaGrxn=-1-> -200kj - Answer K=1.5-1000 Rule of DeltaGrxn values and K - Answer The more negative Delta G the more postive K...vice versa Direction of rxn when (+)G and (-)K - Answer Reverse rxn only to completion Direction of rxn when (-)G and (+) K - Answer Forward rxn only to completion Direction of rxn when G=0 and K=1 - Answer Forward an...

buffer - Answer A buffer is an aqueous solution containing a weak acid and its conjugate base or a weak base and its conjugate acid -minimizes change in pH when OH- or H+ added -WA will consume added OH- (NH4) -WB will consume added H+ (NH3) pH<pKa - Answer more acid in solution pH=pKa - Answer at equilibrium pH>pKa - Answer more base in solution complete reaction - Answer k=oo salt dissociation SA SB A/B reaction that forms salt into h20 partial d...

K<<<1 - Answer reaction favors reactants and lies to the left. K~1 - Answer reaction favors neither reactants nor products and lies at the center. K>>>1 - Answer reaction favors products and reaction lies to the right. Types of disturbances - Answer concentration changes, volume (pressure) changes, and temperature changes decrease concentration of a product... - Answer shift right increase concentration of a product... - Answer shift left dec...

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