Chemistry Questions and Answers

Please give me good websites that have the outline for the Group II Cations??

Please help calculate mass of precipate of 3.1 x 10^-10 M Pb... in 7.0 x 10^-4 M Cl?

Please Help Chemistry Question?

Please help me direct variation and proportion?

Please help me to find out the percent composition of...?

Please help me with a Chemistry problem?

Please Help Me With My Organic Chemistry!!!?

Please Help Me with Organic Chemistry?

Please Help Me with Organic Chemistry?

Please Help Me with Organic Chemistry?

Please help me with this titration problem! =)?

Please help me.. our science teacher told us to think of a investigatory project... Someone please give ideas?

Please help me?

Please Help Me?

Please help with titration prob.?

Please help! Calculate pH value of 50.0 mL 0.1M ammonia with 0.2 M HCl?

PLEASE HELP! Chemistry question!?

PLEASE HELP! clausius-clapeyron equation question?

Please help! How many significant figures are in each?

Please help!!!Calculate ksp for PbCl2 ...?

Please Help!?

Please help. From fig 1a how was the level of enzyme activity determined?

Please help..thermodynamics question?

Please help: Write out the balanced equation for the reaction of these elements with oxygen.?

Please i need help with chemistry?

PlEASE I NEED URGENT HELP in answereing those questions?

Please it is very urgent how do i avoid water seepage?

Please list atleast 10 substances that can dissolve in water?

Please predict whether each of the following bonds is ionic, polar covalent, or nonpolar covalent?

Please show work?

Please someone tell me what is Beer -Lambert Law?

Please state the # of electrons that must be lost by atoms of each elements to aquire a noble gas?

Please suggest some topics for my project BSC Chemistry in nutrition field?

Please tell me everything you can about N2O?

Please tell me everything you can about NOH?

Please!! Help me..Calculate the PH of a solution containing 0.135 M formnic acid (HCO2H)...?

Please, help me!i'm from Ukraine! Can you tell me how to read chemical formulas and compounds in English?

Please, tell me if this is correct?

Pls can u give me the list of d-amino acids and l-amino acids...?

Pls convert 45 ml to cm^3... pls show your solution?

Pls give laboratory apparatus & their uses?

Pls help me answer this questions..ty:)?

Pls help me with these chemistry problems?

Pls help to solve this chemistry equation 20a+15b=1.4 & 8a+6.22b=0.573?

Plz help - org. chem lab...?!!?

Plz help me with this??? matching words?

Plz Help!!?

Plzzzzzzz help plz?

Polar or nonpolar? why?

Polarity of Molecules?

Pollutants in the air and their sources.adverse effects of pollutants on health and buildings.?

Polymer Chemicals harmful?

Polymer chemistry question?

Polymerization of Triglycerides?

Polynomial equation y = -0.0004x2 + 0.0298x + 0.274. how to make the equation to find x?

Polyproctic acids and slats what do they do?

Possible tutor?

Potassium hydrogen tartrate is an acid that is used in making cookies such as snicker doodles...?

Ppm question. Is this right?

Precipitation??

Predict the number of valence electrons for a sulfur atom?

Prep. of nitrobenzene - lets say temp used is about 55 degrees c, what other produts would form if higher temp

Preparation of phosphate buffers?

Principals of radio immunoarrogy(CIA),role of analytical chem,classification of analytical methods?

Processes that require energy & that release energy?

Product that contain lecithin as one of its ingredients. why is lecithin used in some food products?

Production of cyclohexane?

Products & Equation Balancing?

Properties of acidity/alkalinity of toothpaste??

Propose ethyne to 2-butanone?

Protease inhibitors, which one to use?

Proteins. . . ?

Protons and electrons?

Prove that the burning takes place within the fire? by using?

Prove that the wick passess through the candle?

Pure chemistry, applied chemistry, or both?

Pure chemistry, applied chemistry, or both?

Pure substance or mixture??

Pure water is a very poor conductor of electricity but a dilute solution of ammonia in water is a better one?

Purification of BaSO4?

Pv=nRT how do you slove for T?

Q1xc1=q2xc2 pharmacy calculations help?

Qualitative chemistry problem?

Quantitative Inorganic Analysis Questions...?

Quantitative question... please guide me on how to solve this problem.?

Quantum Atomic Model: Quantum numbers, Subshells and Orbitals?

Quantum mechanical model?

Ques-How does a gas lighter work?

Quesiton concerning Hybridization?

Question - Theoritical and Percent Yield?

Question about acid names?

Question about boiling point change when there is a pressure change?

Question about buffer capacity?

Question about buffer capacity?

Question about Chem?

Question about chemical bonding?

Question about chloride ions and resistivity...?

Question about composition of some substances?

Question about conductivity?

Question about creating chlorine from salt and water.?

Question about crystal lattices.?

Question about DIFFUSION OF GASES AND GRAHAM'S LAW?

Question about DIFFUSION OF GASES AND GRAHAM'S LAW?

Question about elements, compounds & mixtures?

Question about energy?

Question about free energy?

Question about friedel-crafts reactions?

Question about laboratory tools...pls!?

Question about mixing solutions?

Question about pH...?

Question about sequence of chemical reactions : Cu(s)->Cu2+(aq)->Cu(OH)2(S)->CuO(s)->Cu2+(aq)->Cu(s) ?

Question about unit cell measurements?

Question about unit cells in minerals?

Question concerning Lewis Diagrams, Hybridization, Molecular structure.?

Question...?

Question..?

Questions about TITRATION?

Quick Chemistry question?

Quick question about adding electrons w/ electrochemistry?

Quick questions regarding flame test. Answers needed ASAP.?

Quick! Chemistry help!?

Quick, is carbon a metal?

Radioactive dacay and mathmatics?

Radium-226 has a half-life of 1.62 x 10 tho the power of 3 years.?

Random.................?

Rank the top three most efficient fuels?

Rate Law?

Rate me on a scale of 1 to 100?

Rate of dissolution of HCl with Mg under normal conditions: graph..PLZ PLZ PLZ PLZ HELP?

Rate of Reaction Economically?

Rate of reactions?

Ratio help?

Re melting plastic is not a good reason were to get the resin and how to mix it?

Reaction between schiff's base and D-glucose.?

Reaction equilibrium?

Reaction of sodium hydroxide with sugars?

Reaction Rates Helppp?

Reaction Rates?

Reaction result Al2(SO4)3+C4H10O --> ?

Reaction stoichiometry?

Reactions with salt, vinegar, and mercury?

Reactive Metal Fires?

Reasons why a recrystallization process would not give a yield of 100%?

Recent chemistry-related articles?

Red onions turned green?

Redox Reaction?

Redox Reactions?

Redox Reactions?

Redox Reactions?

Reducing / Oxidizing Property?

Reducing Oxidation Number?

Reduction of Benzophenone using sodium borohydride?

Refractive Index?

Refractive Index?

Relate the chemical structure of DNA to how it looks when lots of it is clumped together?

Relate the reactivity of the metals and nonmetals to their positions in the periodic table?

Relevant but Long, Hard Lab Questions Heat of Acid-Base Neutralization (part 2)?

Relevant but Long, Hard Lab Questions Heat of Acid-Base Neutralization?

Relevant long, hard lab questions dealing with acid-base neutralization (part 3)?

Remove silver tarnish?

Removing zinc layer from iron?

Replacement of acetic anhydride in non-aqueous titration?

Research.silicon chips!!?

Reverse Osmosis Unit setup?

Reverse Osmosis?

Rocket Fuel (Hydrazine)?

Role of analytical chem?classification of analytical methods?

Rubbing alcohol is 70.% isopropyl alcohol by volume. How many mL of isopropyl alcohol are in a 1 pint (473 mL)

Rxn of potassium chloride with bromine water? what are the products?

Safe max temperature range for heating various borosilicate glassware?

Safety Matchbox & Matchsticks?

Salt and acid question?

Salt bridge/ electrochemical series question?

Saturated vs Unsaturated Fats?

Science chemistry question on "rare elements"?

Science doubt?

Science doubt?

Science doubt? plz answer this Q (esp Mr. sci teacher) (its an addition to the previous one)?

Science Experiment Research Assistance?

Science Experiment?

Science fair help please?

Science help needed.?

Science q??? -help?

Science question.Help!?

SCIENCE questions?

Science...nitrogen?

Scientific Notation?

Sea water and Gatorade?

Sec 3 Chemical equation problem?

Second Year Chem. pH problem?

See the details for my question ..?

SeF4 - polar or nonpolar and why?

Select all the miscible pairs from the following liquids?

Select the most appropriate solvent for the following solutes:?

Separating 2 solids compounds?

Separating a mixture of salt and water?

Serious geology or biology,.. wutever this is PLEASE HELP?

Set of chemistry questions?

Should dihydrogen monoxide be banned?

Should I pull an "all-nighter" for this Orgo 2 test?