Chemistry Questions and Answers

  • Describe the reaction rate for the following equation in three different ways: H2(g) + Cl2 (g) ----> 2HCl?
  • Describe the relationship between precipitation and dissolution.?
  • Describe three ways in which the number of protons and the number of neutrons in a nucleus affect stability.?
  • Describe two methods which can optimize the yield of product in an esterification reaction in the presence of?
  • Describe what happen when water is added to each element.?
  • Describe what happens to a saturated solution of sugar in water if temperature suddenly drops 10 degrees C?
  • Describe what would you see if you added a piece of zinc metal into 6M HCl acid?
  • Describe why you need to identify carefully the substances in a can of baby formula b4 you feed it to ur baby.
  • Desired properties of stones?
  • Desperate Chemistry Help!?
  • Desperate need of chemistry HELP!?
  • Desperate need of Chemistry Help?
  • Desription of a Halogen?
  • Deteremine which band of electromagnetic spectrum has each of the following:?
  • Determination of ionization constant question~~?
  • Determination of iron with 1,10-phenanthroline?
  • Determination of Sucrose after procedure is done? color representaion? science olympiad users included!help!?
  • Determine a chemical, or chemical process that is harmful or disgusting in the making of this food?
  • Determine Absorbance and transmittance?
  • Determine if the formulas are correctly written...?
  • Determine Ka for the acid HA?
  • Determine mass?
  • Determine the activation energy for the reaction. Please help... exam tomorrow!?
  • Determine the activation energy for this reaction and Calculate the value of k at 25 degrees C.?
  • Determine the Celsius temperature of 1.75 moles of gas contained in a 1.00 L vessel at a pressure of 158 kPa.?
  • Determine the concentration of magnesium ions, [Mg 2+], when solid MgF 2 (K sp = 4.780x10^-9) is added to a 8.
  • Determine the concentration?
  • Determine the empirical formula of an oxide of iron which has 69.9% iron and 30.1% dioxygen by mass.?
  • Determine the final temperature of the system:?
  • Determine the hydronium concentration when pH=5.3?
  • Determine the hydronium ion concentration(M) of an acid solution with a pH of 6?
  • Determine the incorrect statement:?
  • Determine the mass of a CO2 gas that has a volume of 7.0 L at a pressure of 1.11atm and a temperature of 31.0?
  • Determine the molar ratio of sodium benzoate (NaC 7H 5O 2) to benzoic acid (HC 7H 5O 2, pK a = 4.092) required
  • Determine the mole ratio for the following reaction.oxygen gas and carbon react to form carbon monoxide?
  • Determine the number of moles of HCl in 50mL of 1.0M HCl?
  • Determine the pH of a 0.01 M KOH solution?
  • Determine the pH of a 0.01 M KOH solution?
  • Determine the ph of a solution prepared by mixing 50ml of 0.125m of KOH with 50ml of 0.125 m of HCL?
  • Determine the rate law and Calculate the value of the rate constant?
  • Determine the specific heat capacity of gaseous ammonia?
  • Determine the temperature (in 掳C) above which the reaction is nonspontaneous. NH3 (g) + HCL (g) --> NH4Cl (s)
  • Determine what shell and sub-shell each of the following electrons..help please.?
  • Determine whether the following equation is alnced. If it isn't balance it.?
  • Determing Concentration and Type of Acid?
  • Determing Half life age with molar ratio?
  • Determing Solubility from ksp?
  • Determining a Ka value for HC2H3O2 in a lab.?
  • Determining a Ka value for weak acid: HC2H3O2 in a lab?
  • Determining melting point with heat of fusion and entropy?
  • Determining percent yield...?
  • Determining the ph and % ionization?
  • Deuterium Ions?
  • Diamond consists of this metal.?
  • Diatomic Molecules?
  • Dibromobis(oxalato)cobaltate(III) ion?
  • Dibromocyclobutane in NMR?
  • Dichloromethane, polar or non polar?
  • Did I balance this equation correctly?
  • Did kerosene contain lead?
  • Did Marie Curie, the discoverer of radium know how to speak English?
  • Did my ice sublime?
  • Did this lab with HCl and metals. HCl reacted with zinc, magnesium, iron, but not with copper. The question is
  • Diet pepsi?
  • Differance between mass number , atomic number and atomic mass?
  • Difference between covalent network and just covalent?
  • Difference between normal ionic and redox ionic equation?
  • Different of property between an Ideal gas and a Real gas?
  • Differentiate between a unimolecular and a bimolecular reaction.?
  • Differentiate between vapour and fume?
  • Diffusion of an ion across a cell membrane is...?
  • Dilute 10.0 mL of solution 3 (Look Below) with 40.0 mL of distilled water. The measured pH is 5.00?
  • Dilution Factor Question?
  • Dilution question please.?
  • Dilution question?
  • Dilution Question?
  • Dimethyl sulfoxide?
  • Dipole moment?
  • Discovery and use of metals through history. i need to make a timeline.. please help...?
  • Discuss the medical application of acidosis.?
  • Discuss what would happen is a poatao strip was boiled for 10 mins and then placed in a salt solution.?
  • Disolving egg dye: chemical or physical?
  • Dispersion Force?
  • Dissociation noob question?
  • Dissociation of acids question...?
  • Dissolving salt in water is usually endothermic?
  • Distinguish between a metal and a metal containing compound?
  • Distinguish pental and 1-pentanone by simple chemical test ?
  • Distinguishing a solution of ammonia from water?
  • Do all metals react w/ acids to form salts.EXPLAIN briefly!?
  • Do all proteins repsond to biuret test?
  • Do all the molecules in a 1-mol sample of CH4(g) have the same energy at 273 K?
  • Do anobody tell me which metal is stored in water, just like sodium in kerosene???
  • Do any of u people know What makes a semi-cunducter metal semicunduct- what makes it? thks.?
  • Do apples contain papain??
  • Do bases release hydrogen gas when added to water?
  • Do burning leaves or spices produce CO2?
  • Do chemicals change you?
  • Do coefficiants+subscript effect electroneg. #?
  • Do hydronium ions conduct electricity?
  • Do I use sig figs in a grams to Mole conversion?
  • Do isotopes of an element have the same chemical and physical properties?
  • Do paints, yarns, carpet, etc contain only polyacrylonitrile (homopolymer) or its copolymers?
  • Do rocks have malleability?
  • Do salt crystals grow faster in cold, warm, or hot places?
  • Do someone has any idea what is the name for this chemical , NaHSO4 ?
  • Do the solubilities of all ionic solids increase as the temperature increases? why?
  • Do the terms endothermic and exothermic apply to light energy?
  • Do they really add something to pure ethanol in Chem Labs that makes you go blind?
  • Do they still use mercury in thermometers?[a above ground pool (floater) thermometers]?
  • Do trihalomathanes form when chlorine is added to the water during the treatment process?
  • Do u know wat is alkaline???
  • Do u know which compounds have a density around 0.8g/ml?
  • Do you believe the key to developing cold fusion is the development of large water molecule?
  • Do you find it strange that Dr Dave P has 4 thumbs down, yet still got 5 votes.?
  • Do you get any reaction when u add barium nitrate to dilute nitric acid?
  • Do you know a good online guide for organic chem reactions (SN1, SN2, E1, E2 types...)?
  • Do you know anyting bout uranium???
  • Do you know chemistry? what do you think this experiment shows?
  • Do you know some simple lab test that shows the presence of a ring structure ?
  • Do you know something about second A group from periodic table?
  • Do you think Mentos + Diet Coke will unclog my drain?
  • Do you think that Richard Will anwser this and if he dose how many stars or anwsers will it take?
  • Do you trust people who have greater than 50% best answers.?
  • Does Magnesium have an odor?
  • Does "Ni+1" mean it has 1 extra election or it lost an electron?
  • Does 1 ml of urine or 1 ml os distilled water have a greater specific capacity and why?
  • Does a catalyst have an effect on the position of equilibrium for a reaction?
  • Does a Chem major wanna help me please????????
  • Does a higher molar mass mean ahigher boiling point?
  • Does a precipitate form?
  • Does a release of a gas indicate a chemical change?
  • Does a solution always have water in it?
  • Does a strong base produce 100% of the maximum hydroxide ions?
  • Does a weak acid produce a small fraction of hydronium ions?
  • Does adding common salt in water make water more polar?
  • Does air pressure have a significant effect on the rate of evaporation?
  • Does all matter produces CO2 when burned?
  • Does any one have the answers to this Chemistry homework, "And it's not in my textbook"?
  • Does any one know the equation for collision?
  • Does any one know what S.F.I.A unit in a refinery stands for?
  • Does anybody know any sites that have the colors for hydrion paper and cabbage juice indicators?
  • Does anybody know how to make gellied alcohol? not for drink?
  • Does Anybody know if there are any pyrotechnic schools near chicago?
  • Does anybody know the contact no of Mrs.Aparna...the chemistry teacher of DUFF HIGH SCHOOL FOR GIRlS,Kolkata.?
  • Does anyoe know the latin root for lithium?
  • Does anyone agree that Irish Spring Soap loses its scent (smell) after a long time?
  • Does anyone have any cool science experiments?
  • Does anyone know a good site which contains all about chemistry, both organic and inorganic chemistry?
  • Does anyone know a test to find out if a susbstance is ethanoic acid?
  • Does anyone know a webiste where I can buy liquid chloroform?
  • Does anyone know about Biosteel?
  • Does anyone know about half-life?
  • Does anyone know any interesting facts about chlorine?
  • Does anyone know anything about atoms??
  • Does Anyone Know Anything about Kp and Equilibrium?
  • Does anyone know anything about Q-torch lighters?
  • Does anyone know anything about Robert Stan Brown?
  • Does anyone know how to melt down silver and what you need to do this?
  • Doe's anyone know if it is possible to be frozen and still be alive when you get un-frozen?
  • Does anyone know of any liquids that you can mix at home that is self oxidixing? Like liquid oxygen?
  • Does anyone know of any method or journal article on extracting synthetic hormones in plants?
  • Does anyone know polar and non-polar molecules?
  • Does anyone know some good facts about zinc like its density,ductility, or mellability?
  • Does anyone know the Diet Coke and Mentos hight record?
  • Does anyone know the formula for the following compounds containing type II ions?
  • Does anyone know the name of the formula Mn3(PO4)2 and MnPO4?
  • Does anyone know the petits formula for calculating gross calorific value(G.C.V & L.C.V)?
  • Does anyone know the relative temperatures for a mood ring?
  • Does anyone Know the slowest moving liquid known to man???
  • Does anyone know these?
  • Does anyone know waht is Fe(HCO3)2?
  • Does anyone know what an RNA strand looks like?
  • Does anyone know what an RNA strand looks like?
  • Does anyone know what liquids they use in this youtube video?
  • Does anyone know what the following ionic compounds arefor : YCIO3, SnS2, Ti(CN)4, CoCO3, CdSO3, Cu(NO2)2?
  • Does anyone know what the particles are called that are smaller than atoms?
  • Does anyone know what the polyatomic ion Ba(MnO4)2 stands for? Ive been searching and I can NOT find it. HELP!
  • Does anyone know where i can find a fire retardant spray?
  • Does anyone know where I can find the markscheme for paper 2 of the HL chemistry exam of May 2004?
  • Does anyone know where I can find the price of carbon fiber? Ideally current and historical. Thank you!?
  • Does anyone know where i can get some facts on Berkelium from?
  • Does anyone know where there are AP free response questions for chemistry. I need questions and the answers.?
  • Does anyone know where to buy potassium chloride and calcium chloride"?
  • Does anyone know??
  • Does anyone knows the salt refination process ?
  • Does anyone need help with elements?
  • Does anyone out there know about the effects of benzene poisoning on the brain and the body?
  • Does carbons bondings have any unique characteristics? if they do what are they?
  • Does concentration of a solution affect specific rotation?
  • Does Cu+2 have the same atomic mass as Cu??
  • Does cyanide kill caustic cleaner?
  • Does d socity use toxic waste?is it used as a fertilizer?what does the govenment have to say about toxic waste
  • Does draining a car battery reduce its lifespan? If so, how??
  • Does Fructose have a polar, non-polar or ionic bond? Where can I get more information on this?
  • Does gas show up on a drug test?
  • Does helium form any chemical copmpounds?
  • Does hot water neutralize bleach?
  • Does Hydrogen Sulfide support combustion?
  • Does ice melt faster in acid or water?


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