Chemistry Questions and Answers

  • The Vapor pressure of hydrogen peroxide is 100.0torr at 97.9C What is this pressure in kpa?
  • The Volume of 0.50 M BaCl2,which contains 3 moles of Cl- ions?
  • The volume of a gas with a pressure of 1.2 atm increases from 1.0 L to 4.0 L.?
  • The windscreen of a car broke during a hot afternoon?
  • Theoretical yeild ??
  • Theoretical yeild?
  • Theoretical yield?
  • Theoretical yield?
  • There are presently 118 elements listed. Is there a limit on how many there can be?
  • There are some elements like Palladium which can absorb hydrogen, what are the other elements which can do so
  • There is a professor from Indiana University at Bloomington?
  • Thermal degradation of coco shell - What temperature of pyrolysis do you get the most CO?
  • Thermal Energy and Thermodynamics killer?
  • Thermodynamic Process and Heat Problem. Please help!?
  • Thermodynamics question?
  • Thermodynamics: ice melting question?
  • These density?
  • Thin Layer Chromatography?
  • This is about alchemy?
  • This is the best chemistry element song i have EVER heard,,tell me what do u think of this awesome song,,?
  • This might for someone with a chemistry background. Could ashes be used to make bricks & sheetwall?
  • This question is about some of the properties and reactions of several substances.?
  • Though dihydroxy acetone is not optically active it is a carbohydrate. why...?
  • Though ozone & oxygen are allotropes, why do they hava difference in chemical properties?
  • Three resons why it is inadvisable to boil an organic liquid in a open beaker?
  • Titrating solution X and Y gives me death?
  • Titrating with EDTA? (I give points for Best Answer)?
  • Titration (Stoichemetry) Question?
  • Titration equations. last one for today?
  • Titration of 35.0 mL a calcium hydroxide solution to the endpoint requires 16.41 mL of 0.050M HCl soltion?
  • Titration of acids and bases?
  • Titration problem help?
  • Titration problem?
  • Titration..?
  • Titrations- equivalence point?
  • Titrimetric analysis?
  • To calculate the osmotic pressure you would need to measure each of the following except..?
  • To calculate the osmotic pressure you would need?
  • To convert a sample of air into a liquid as done commercially to produce liquid nitrogen, you would probably..
  • To determine the most flammable substance at room temperature?.?
  • To form an ion, a sodium atom?
  • To heat a beaker of water, which of the following makes it boil the fastest?? propanol/octanol/C25H52?
  • To make a 1.25 M HCL soln, you add 12.0 ml of the concentrated HCL in to enough H20 to make the soln 100 ml.?
  • To produce heat energy would we use electricity?
  • To what extent does ascorbic acid dissociate in water?
  • To what temperature must 15 L of oxygen gas at 0°C be heated at 1 atm pressure in order to occupy a...?
  • Tollens !! Help Me?
  • Torch lighter?
  • Torch Lighter?
  • Total Acid Number, Total Base Number & PH?
  • Tricky molarity questions?
  • Tricky!1 liter of an aqueous solution contains 6.02 X 10^21 H3O ions.Therefore its H3O ion concentration is.?
  • True Or False Nucleophile Questions?
  • True or false, the formula for potassium sulphate K2SO4, is both empirical and a molecular formula.?
  • True or False...A trace element is one that is not required in the diet.?
  • TRUE or FALSE? Hypothesis Test for Statistics??
  • True or false--According to the theory of greenhouse gases increasing amounts ofCO2 and CH4 cause global warmi
  • True or false-----all gases occupy zero volume at zero degrees Celsius?
  • True or false---As the [H+] in a solution increases the pH value increases?
  • True or false---Equal numbers of moles of ideal gases at the same pressure and temp occupy the same volume?
  • True or false---If water is added to an acidic solution the pH changes?
  • True or false----The electrons emitted by a beta emitting isotope are its valences electrons?
  • True or false----The half life of a radioactive isotope changes as the isotope decays?
  • True: In electrolysis, cations go to cathode and anions go to anode?
  • Two containers of gas with different amounts of moles but at equal temperature and pressure.?
  • Two conversion problems?
  • Two flasks, one of heavy butane gas and the other lightweight hydrogen gas, when connected would?
  • Two quick chemistry questions?
  • Two quick density questions?
  • Two solutions, a 20% and 80% solution. How much of each should be used to obtain 100 liters of 62% solution?
  • Two test tubes A and B contain solution of NaBr and NaI.How would you test which test tube contains which salt
  • Under what circumstances does Calcium Fluoride react/decompose/disintegrate?
  • Unimolecular?
  • Unit analysis and conversion?
  • Unit Analysis?
  • Universal Solvent-Water?
  • Urgent Orgo Question?
  • Urgent! nuclides? isotopes? radioisotopes?
  • URGENT! What is the thermal stability of potassium phosphate?
  • Urgent, really urgent chemistry help on reactions in needed here.?
  • Urotropin..?
  • Use of q-test and confidence limits in analytical chemistry?
  • Uses of laboratory apparatus?
  • Uses of p-nitroacetanilide?
  • Using an equation, state the relationship between the Faraday constant, F, the Avogadro constant, L, and the..
  • Using electrolysis with water, is there any subtitute for salt...?
  • Using gas for cooking is safe or not?
  • Using specific gravity to find moles?
  • Using tabulated values of S°, calculate the standard entropy per mole of atoms for Kr.?
  • Using titanium dioxide or zinc oxide as a sunscreen and effectiveness against UV radiation?
  • Using water as an example, describe how matter can change from one form to another?
  • Using water as an wxample, describe how matter changes from one form to another?
  • UV-Vis Spectrophotometry problem.?
  • Vapor Pressure Please help!?
  • Vinegar and bi-carb soda....?
  • Vitamin C and Ca (calcium) scientifically?
  • Volatile and non volatile?
  • Volume for this atom?
  • Volume of a gas?
  • Volume of a sphere is (4/3)*pi*r^3. how can i calculate the density of a pure gold sphere with a given ?
  • Volume of H2SO4 needed to prepare 1 liter of a 0.02 N solution?
  • VSEPR, please help?
  • Was evolution in effect before, at or just after first living cell?
  • Washing soda?
  • Wat does the elements dat exists as molecules called?
  • Wat happened wen diamond is placed in water?
  • Wat happens when Zn metal is dipped in CuSO4 solution?give reaction involved.which is more reactive Zn or Cu?
  • Wat indiction dat a chemicl reaction ocurs n mixng da ff: a.Na2SO4 & BaCl2 b.NaHCO3 & CH3COOH(ACETIC ACID)?
  • Wat is a ammion hydroxide? Is it a mixture or pure substance?
  • Wat is reducing effect?
  • Wat is the chemical name of water apart from h2o?
  • Wat is the use of these apparatus?
  • Wat r da differences between van der waals forces n metallic bonding?
  • Water and acid?
  • Water and oil mix?
  • Water as a solvent?
  • Water can erode rocks (diamond erosion diamonds are a liquid with a high viscosity) ?
  • Water is a polar solvent and hexane (C6H14) is a nonpolar solvent. Which of the following correctly describes?
  • Water is made from hydrogen and oxygen, so why doesn't it burn?
  • Water is made of oxygen and hydrogen;hydrogen burns, fire needs oxygen why does water extinguish fire?
  • Water molecules?
  • Wats the role of evaporation in desert cooler(or normal coolers)?
  • Wavelength Question, can someone get me started?
  • Ways to make chromium iron oxide to sodium chromate?
  • We can distinguish salt solution from vinegar by all the following methods EXCEPT?
  • Websites!!...?
  • Weigh 50g fine sand in a 250ml beaker, add 150ml water and shake. set aside to allow the sand to settle.?
  • Weird Question about Flammables - don't ask, lol.?
  • Were can i buy dry ice and how much does it cost a pound?
  • Were does gravity come from?
  • We've 2 identical containers filled with water,one is kept in sun and the other in room what happen after3Days
  • Wha are the advantages and disadvantages of the purged dip system in measuring liquid level in tank.?
  • What is normal and hydrogen atom? PLSSSSSSSSSSSS i need it for my assignment now answer me ASAP?
  • What 1/2 reaction would be reduced by Cr(NO3)3 being reduced by 3 electrons?
  • What 2 clear chemicals when put on a hand and the other put on a knife and pressed 2gether make a red liquid?
  • What 2 physical properties characterize matter?
  • What accounts for the difference in melting points of the substance?
  • What accounts for the difference in melting points of the substance?
  • What acid has the strongest base.?
  • What alicyclic compound can be found in heme?
  • What are 2 ways to increase the dissolving rate or a solute in a solvent?
  • What are 5 questions that I can come up with for a chemistry presentation in the following subject?
  • What are acid gases, with examples?
  • What are acidic/basic salts. please explain. please?
  • What are all the possible sets of four quantum numbers for the following:?
  • What are analytical solvents?
  • What are aromatic and aliphatic compounds?
  • What are atomic and molecular properties and structures?
  • What are biodegradable materials and non-biodegradable materials?
  • What are enzymes?
  • What are examples of physical change?
  • What are glass plates?
  • What are hydrocarbons made of?
  • What are index fossils used to date?
  • What are inorganic molecules?
  • What are ion drives?
  • What are isotopes?how are isotopes used in biological research?
  • What are limestone's chemical properties?
  • What are major and minor species (in Chemistry)?
  • What are mineral acids and why are they called so?eg. HCL is mineral acids and Oxalic acid is not? y?
  • What are molecules which obtain chirality centers and a plane of symmetry?
  • What are normal levels for PCBs ppb. tHANX?
  • What are reasons for high absorption ability of activated carbon?
  • What are some common industrial or technological applications of these elements?
  • What are some common manmade materials that we use which contain fluorine?
  • What are some compounds you can make at home?
  • What are some conditions that influence the efficiencyof heat as a sterilizer?
  • What are some of the general properties of gases that destinguish them from liquids and solids?
  • What are some products where the desirable is the product from undesirable reactants?
  • What are some uses for zinc hydroxide Zn(OH)2?
  • What are some ways to grow easy crystals with stuff in a common kitchen?
  • What are sub-shells?
  • What are the 13 states of matter??
  • What are the 5 periods of chemistry that led to its development/evolution?...please reply asap...?
  • What are the 7 phases of matter?
  • What are the 7 properties of atoms?
  • What are the advantages of a saltwater tester?
  • What are the advantages of producing synthetic materials?
  • What are the answers to the following questions?
  • What are the basic objective in performing flame test?
  • What are the basics of bio chemistry??
  • What are the best books for iit chemistry , maths and physics?
  • What are the boiling points of fatty acids in vacuum pressure?
  • What are the characteristics of a properly bent glass tube?
  • What are the characteristics of group 1 metals and their cations?
  • What are the characteristics of group 2 metals and their cations?
  • What are the chemical basis of bioligical science?
  • What are the chemical changes in burning of a candle?
  • What are the chemical components of duranta fruit?
  • What are the classifications of matter?
  • What are the common lab apparatus?
  • What are the common science laboratory tools and their uses?
  • What are the common science laboratory tools and their uses?
  • What are the common science laboratory tools and their uses?
  • What are the components of a dry cell?
  • What are the compositions of corn husk?
  • What are the conditions necessary for enzymes to work efficiently in laundry?
  • What are the definitions of oxidation and reduction involving electrons?
  • What are the different interactive forces involved in physical interaction during a solution process?
  • What are the difficulties involved in growing crystals?


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