Chemistry Questions and Answers

  • I have a chemistry question. Please read on, I can't fit it all on this line.?
  • I have a chemistry question.?
  • I have a diffficult calorimetry problem I could use assistance with?
  • I have a number of questions like this and I'm a stumpped on how to do them can someone show me how using this
  • I have a Q about reducing powers of halide ions down group 7 cant find defination please help?
  • I have a question about how to calculate the heat of vaporization.?
  • I have a science question?
  • I have a solution of 0.1M molarity.How do I get a soln of 0.8M,0.6,0.4M,0.2M from it?
  • I have a solution of 2.42% and a solution of 8.35% acetic acid. What is the blend ratio to get 4.88%?
  • I have a topic for my Chemistry project....Please help on that one?
  • I have chemistry final today but don,t know anything?Any Suggestion? please?
  • I have heard that we should not keep gold with lead. Why?
  • I have only 5 day left for chemistry... Please Urgent Help...?
  • I have to meke a model<working and operational> of chemistry?
  • I have two questions about silly putty?
  • I heard that if you mix a acid and a base you would get a reation (like an explosion)?
  • I just need someone to clarify my answers to the properties and their corresponding uses to carbon dioxide! =)
  • I knew about perfluorocarbons emulsions, but what exactly are the salts needed for this procedure?
  • I know , nitroglycerine is glycerin of trinitrate but how it is made?
  • I know PVC is impervious to nitric acid, is ordinary plastic also impervious? i.e. storage totes, hard plastic
  • I know this but Who else knows this?
  • I know this is a chemical change but why?
  • I love all you!!?
  • I m doing bsc in chemistry,i want 2 do msc with same subject i want 2 know eligibility,books?
  • I manufacture cleaning products, like dishwashing liquid and degreasers do u know of a search engine I can use
  • I need a balanced equation representing the decomposition CaCO3(s)...Please:)?
  • I need a common household item that contains a molecule that follows the octet rule.?
  • I need a conclusion for a chemistry lab where we had to get exactly two grams of a precipitate. HELP!?
  • I need a good explanation of the B-oxidation of saturated fatty acid cycle. Any help would be awesome.?
  • I need a little Chemistry help. sorry, there's a few questions in one.?
  • I need a science fair project that can be a winner please help?
  • I need a site to check the chemical composition of foods?
  • I need an explaintion of why dry ice freezes a bubble?
  • I need answers of a Chemistry Lab Between acids and bases reaction?
  • I need chemistry help!?
  • I need chemistry help!?
  • I need directions on how density can be measured in a sperical sample of metal?
  • I need examples of the following for my chemistry honors project?
  • I need examples of the following:?
  • I need hazmat class code names for chemical clasifications. firre department is constantly asking for cfr 49's
  • I need help for my chemistry final!?
  • I need help for my chemistry final?
  • I need help for my chemistry finals please!?
  • I need help for my final?
  • I need help for my final?
  • I need help from a chemistry expert, chemical reaction product results when...?
  • I NEED HELP IN PERODIC TABLE LESSON?
  • I need help in THERMODYNAMICS -- chemistry problem?
  • I need help please....b=10e^kt?
  • I need help plz question?
  • I need help quick?
  • I need help solving this chem. problem? Can someone help me.PLZ?
  • I need help understanding how to write half reactions and full reactions?
  • I need help with 2 difficult stoichemistry problems. Thanks?
  • I need help with a chemistry problem. Involves keq and ICE tables.?
  • I need help with balancing half-reactions?
  • I need help with chemistry homework... balanced chemical equations, organic compounds...?
  • I need help with chemistry please...?
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  • I need help with chemistry practical?
  • I need help with chemistry. I want to check my answer?
  • I need help with chemistry?
  • I need help with chemistry?
  • I need help with chemistry?
  • I need help with chemstry?
  • I need help with my hw!?
  • I need help with some lewis dot structures and if they are polar or not. NH2Cl, Cl2O, AsH5, AlH3, CCl3F2,& O3
  • I need help with this chem question Please, if you could please include an explanation of the problem!?
  • I need help with this Chemistry paper... (Home Schooled) These are the words.?
  • I need help with this one please?
  • I need help witht he chemistry project taht i am doin - due on wed?
  • I need help?
  • I need iceberg facts iceberg facts?
  • I need large amounts of recycled vegetable oil.?
  • I need list 3 ways chemicals can be deneficial and 3 ways chemicals can be harmful. (I need specific details)?
  • I need people with a knowledge of Chemistry to check my answers plz?
  • I need report on soap foaming capacity?
  • I need some details on these all of these observations?
  • I need some help answering these Chemistry question?
  • I need some help answering these chemistry questions...?
  • I need some help answering these chemistry questions...?
  • I need some practice problems for redox reactions?
  • I need some serious help in chemistry.?
  • I need sulfur?
  • I need the definitions for Endothermic, exothermic, ions on acids, ions on bases, electron distribution?
  • I need these answers can you help?
  • I need to come up with 6 methods of separating materials.?
  • I need to get back a silver inside the waste solution BF of the minilab.What I can do?
  • I need to glue "Delrin 507", can it be done? How? What type of glue would i use?
  • I need to know all about: acrylonitrile styrene copolymer?
  • I need to know how the manufacturing of mirrors effects the environment.?
  • I need to know more about this buffer layer: SrZr0.5Ti0.5O3.?
  • I need to know what a compound is. It looks plastic-ky and has a D of 1.7gpcm. It is wh, sol, and acidic salt.
  • I need to know which form of carbon is hardest, slippery, & may possibly be used to carry other substances?
  • I need to make slime.?
  • I need to recupered the silver element from the waste solution BF in the Minilab printing (photograph)?
  • I need two equations to represent formation of hydrogen gas...Please.?
  • I NEED URGENT HELP ASAP! WHAT COULD I DO TO MAKE YEAST RISE MORE SLOWLY? help!!?
  • I needed help on balacing equations. 22 of them. My teacher flew threw them and i wanted to learn for the fut.
  • I once had the following debate with my chemistry profesor:?
  • I read that electrons are bigger.?
  • I really don't understand how this Thermochemistry question works.?
  • I REALLY NEED UR HELP pleseeeeeeeeeeeeeee?
  • I remember from a college chemistry course learning that cold water in a pot will boil faster than hot water?
  • I suck at chemistry! Help!?
  • I think it's about time that lab testing on animals and humans should be outlawed, do you agree?
  • I think the A level Chemistry paper this year was rather difficult? Anyone knows threshholds?
  • I want 25grams of a essential oil, how much is that in mls please.?
  • I want a good topic for my chemistry project .HELP ME!!!!!?
  • I want a project on chemistry related to our day-today life?
  • I want some topics for chemistry ivestigatory projects?
  • I want the best invisible ink?
  • I want to ask some questions about chemistry?
  • I want to construct a batterie that could light up a pickle, which could need wall current, which is 20 volts.
  • I want to grow a Sapphire crystal...but I don't know how to...can someone help me?
  • I want to know how could i answer this question?
  • I want to know how to balance these equations & want to know whether these are 'Redox Reactions' or not.
  • I want to know how to perform named organic reactions in a sonicator in order to increase yield of reactions.?
  • I want to know the where i can study battery mixing or any electro chemical institute in india?
  • I want to know what can be added to clear(poyleurathane substance) that will speed up drying time to 5 minutes
  • I want to know why is an atom hasno charge?
  • I want to obtain information about XRD and debeye-Scherrer formula.?
  • I want to prepare transparent conducting glass,can any one help?
  • I want to see how looks the sulpharic acid plant?
  • I was just wondering...?
  • I was wondering if its possible for general public to buy solid magnesium dioxide (MnO2) or solid lithium?
  • I wil be doing an experiment to determine the empirical formula of magnesium oxide?
  • I wish to prepare a standard of acetone of 5000Ppm.How to prepare?
  • I would be grateful if anyone can help me with this?
  • I would like to know how to convert ppm (parts per million) to moldm^-3?
  • Iam confused about hybridization concept how do you tell which hybridization an element go through and ?
  • Ibuprofen 13C NMR interpretation?
  • Icannot balance; Did I write the wrong equation?
  • Ice Cream, Salt, Sugar, Heat, milk, ice?
  • Idael gas law. How is the equation arranged for this problem (find volume)?
  • Ideal gas law?
  • Ideal Gas Law?
  • IDENTIFY and DESCRIBE 1 sutiable recovery strategy following an 800m swim??
  • Identify and describe the operation of the three major chemical buffers of the body.?
  • Identify each reactant in the following as acid or base. Label the conjugate acid base pairs in each?
  • Identify the acid, base, conjugate acid, and conjugate base in this equation. HCO3+HF<--->H2CO3+F?
  • Identify the elements having the electron configurations below. Write the symbol for the element.?
  • Identify the precipitate (if any) that forms when the following solutions are mixed, and write the balanced...
  • Identify the salt that remains when a solution of H2SO4 is titrated with a solution of Ca(OH)2?
  • Identifying unknown substances?
  • If [H30+] is greater than [OH-] in a solution, the solution is acidic. true or false?
  • If 0.64 g/liter of a gas dissolves in water at 21.6 KPa of presure, how much will dissolve at 153.00 KPa of pr
  • If 1 mole of H weighs 2.02g, what is the mass of a liter of H at room temp. and 1 atmosphere pressure?
  • If 18 ml of oxygen are collected over water at 27 degrees C and 740 mm of pressure, what volume will the dry g
  • If 18.5 mL of a NaOH solution is required to neutralize 25.0 mL of 0.457 M HCl, what is the molarity of the Na
  • If 200 ml of a 2.50 M NaOH solution is diluted to 500 ml, what is the new concentration of NaOH?
  • If 211 mL of 19.1 M NaOH is diluted to 2.00 L what is the molarity of NaOH in the diluted solution?
  • If 26.42 mL of a 0.1650 M NaOH solution is required to neutralize 30.40 mL of H2SO4, what is the molarity of?
  • If 3 methyl butanoic acid is reduced, what is the product?
  • If 3.20g of aluminum react with excess hydrochloric acid, how many cm^3 of hydrogen collected...?
  • If 3.67 g CO2 gas is introduced into an evacuated 2.50 L flask at 65 掳C....?
  • If 34.2g of KMnO4 were mixed with 0.990 moles of HCL, how many moles of Chlorine gas could be produced?
  • If 4.5 potassium nitrate are made by double replacement between excess nitric acid and 35ml og KOH solution?
  • If 42.50ml of a solution of 100grams of potassium chromate per liter was used to completely react with?
  • If 45ml of .30 N H2SO4 are neutralized by 75ml of base, find the normality of the base?
  • If 5.3g of the strong base NaOH is dissolved in water to form 1500mL of solution, what are the pH [H3O+] and..
  • If 6.46 L of gaseous ethanol is burned in excess O2, what is the max vol of CO2 prod?
  • If 6.75g of oxide of lead was reduced to 6.12g of metal.Calculate the empirical formula of the oxide.?
  • If 6.75g of oxide of lead was reduced to 6.12g of metal.Calculate the empirical formula of the oxide.?
  • If 73.8 mL of an AgNO3 solution reacts with enough Cu to produce 0.241 g Ag by single displacement, what is...
  • If 73.8 mL of an AgNO3 solution reacts with enough Cu to produce 0.241 g Ag by single displacement, what is...
  • If 89j heat are added to a pure gold coin with a mass of 12grams. What is its temperature change?"?
  • If a 0.35 solution of a weak acid has a pH of 4.55, what is the % of ionization of the acid?
  • If a 3.44-L flask of SO2 at 1.65 atm contains the same number of molecules..?
  • If a combination reaction takes place between rubidium and bromine, the chemical formula for the product is?
  • If a crucible and sample are left to cool in a humid room, what will happen to the number of mols of oxygen?
  • If a gas has a volume of 360 ml at 600 torr:?
  • If a gas has a volume of 600L at a temp of 38C:?
  • If a gas is at a constant temperature, will increasing the pressure on it decrease its volume?
  • If a gas sample has a pressure of 31.7 kPa at 0.00掳C,?
  • If a group II cation unknown solution contains copper, how can you tell through basic inspection?
  • If a mixture of strong acid (pH = 4) is mixed with equal volume of a strong base with pH 8, what is the result
  • If a poisonous substance has expired.. is it still poisonous?
  • If a reaction has an equilibrium constant just greater than 1 what type of reaction is it?
  • If a reaction is reversible, what are the relative amounts of reactant and product at the end of the reaction?
  • If a reaction is spontaneous in the forward direction is it always non spontaneous in the reverse direction?
  • If a reaction is spontaneous in the forward direction is it always non spontaneous in the reverse direction?
  • If a reaction requires a high activation energy what is it likely to do?
  • If a sealed syringe is plunged into cold water, in which direction will the syringe pistol slide?
  • If a solute is mixed with a solvent does the resulting solution have a higher boiling point than pure solvent?
  • If a solution were to change its composition during freezing, how would the cooling curve change?
  • If a substance contains 3 or more different kind of molecules is it a mixture or pure substance?
  • If a substance is a very strong oxidizing agent, what does this mean in terms of electrons?
  • If a system is left to change spontaneously, in what state will it end?
  • If air at a set pressure is heated by 20 degrees c what would that do to the pressure it is at?
  • If air is exhaled into lime water.What will happened?Name the metabolic activity involved.?
  • If all molecules vibrate all the tme, even within a solid.What keeps the outermost layer of molecules from...?
  • If all nitrous oxide from....?
  • If an acid.?
  • If an aqueous solution freezes at -5.58 Celsius, at what temperature will it boil?
  • If an aqueous solution is prepared, which reagent ..?
  • If an aqueous solution of sodium hydroxide has a [OH - ] = 1.0 10-3 at 298 K, what is the [H+]?
  • If an aqueous solution of sodium hydroxide has a [OH - ] = 1.0 10-3 at 298 K, what is the [H+]?
  • If an atom absords sufficient energy then.?
  • If an atom gains 3 electrons, what is its new charge?


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