Chemistry Questions and Answers

  • Why will increasing the temperature of a reaction speed up the reaction?
  • Why would a chemist, if he/she didn’t have good analytical software...?
  • Why would it be unwise for each country to choose its own names and symbols for elements?
  • Why would popcorn salt burn my tongue?
  • Why wouldn't this work for getting impurities from gold during melting with mapp gas:?
  • Will a balloon filled with He deflate faster than one filled with hydrogen?
  • Will a simple pop bottle hold acetone without it dissolving?
  • Will Citric Acid or other acids neutralize Ammonia?
  • Will coal ever replace petrol to run cars etc?
  • Will I pass my EtG?
  • Will pewter rust off if let in water??
  • Will philippine coin (1 peso and 5 peso )melt in muriatic acid? leaving a shell heres a demo?
  • Will the chem majors have pity on a poor soul...?
  • Will the mist from an inscect fogger contaminate any DNA testing on items in a room?
  • Will the pH of water change if you "blow" carbon dioxide into it?
  • Will the reaction occur?
  • Winkler method?
  • With an unlimited amount of oxygen, do all fuels produce carbon dioxide, water and energy when they combust?
  • With atom's, are Atomic Mass and Atomic Wieght the same thing?
  • With no oxygen, do all fuels produce carbon dioxide, carbon monoxide, carbon, water and energy when combusted?
  • With pressure constant, the temperature of a gas is increased from 30° C to 90°C. The volume will...?
  • With the notation: Cu(s)/Cu2+(aq)//Aq+(aq)/As(s), which is true?
  • Without doing any calculations, determine the signs of ΔS for the system, for the surroundings..?
  • Without doing any experiments, which of the following can you say must be true.?
  • Without the microscope, would mankind ever have learned the germ theory?
  • Wnich burn hotter: steam or boiling water?
  • Would an infrared sensor be able to distinguish dog feces from grass that has been heated by the sun all day?
  • Would anyone tell me, About soubility parameter !!?
  • Would Argon gas keep frozen water frozen for longer?
  • Would foods have a smell if matter wasn't particulate?
  • Would I be able to get the 'best' nucleation rxn w/ diet coke using Activated Charcoal? (Great surface area)
  • Would ordinary dry corn pop and become popcorn?please explain.?
  • Would the Canadian authorities use enough herbicide to damage the minds of anamals and drug addicts?
  • Would these chemicals form a precipitate if mixed in water? plz help!?
  • Would trace amounts of common chem class lab substances be harmful?
  • Would u rather go to lake compounds or lake quassy?
  • Would you reommend Analytical Chemistry?
  • Would you want the following in your water? Then why bottle?
  • Write a balanced chemical equation for a reaction of aqueous sodium nitrate and aqueos calcium acetate?
  • Write a balanced chemical equation for the reaction between sulfuric acid and potassium hydroxide.?
  • Write a balanced chemical equation to represent the decomposition of glucose into ethanol?
  • Write a balanced chemical equation to represent the oxidation of ethanol?
  • Write an equation - AgNO3 is added to potassium thiocyanate and iron(III) nitrate?
  • Write appropraite equations to support this explanation?
  • Write balanced chemical equation for magnesium+hydrochloric acid=magnesium chloride+hydrogen?
  • Write formulas for the conjugate bases for each of these acids?
  • Write HBr, HF,Sr,NH4OH, AgNO3, Ag2SO4 substance as it exists in aqueous solution?
  • Write net ionic equations to show what aqueous HBr and HNO3 have in common?
  • Write reaction equation for the reaction?
  • Write reaction equation?
  • Write reaction?
  • Write reactions?
  • Write structural formula for these :?
  • Write the balanced chemical equation for potassium bromide+barium iodide=potassium iodide+barium bromide?
  • Write the balanced equation for the dehydration of table surgar using concentrated sulfuric acid?
  • Write the equation for barium chloride reacts with zinc sulphate to give zinc chloride and barium sulphate as?
  • Write the formulas of three carbonate compounds that are :?
  • Write the net ionic equation for the combination of the following aqueous species.?
  • Write the net ionic equation for the following equations and predict whether or not a precipitate will form?
  • Write the net ionic equation for the reaction of the combination of the following aqueous species.?
  • Write the result in scientific notation.?
  • Writing an ionic equation, help?
  • Writing formula for non-substitude and substituted cyclic hydrocarbons?
  • Writing formulas for alkyle halides?
  • Y is benzane unsuitable for recrystallising naphthalene?
  • Y the melting point of Mg is the lower than Be,Ca,Sr,& Ba. ?
  • You are asked to prepare an aqueous solution of ethylene glycol (HOCH2CH2OH) with a mole fraction of 0.111.?
  • You are given a liquid describe steps you would take whether it is a pure substance or a homogeneos mixture?
  • You determine the pH of a solution to be 4.07. Therefore the [OH-] is?
  • You have 11.2g of a compound it's known that a compound has a half life of 3.8 days.?
  • You have a 0.0825 molar solution of HCl. You expect the pH to be what?
  • You have a compound that is subject to decay.?
  • Zinc granules in acidified tin(II) chloride solution?
  • Zinc nitrate + ammonia?
  • Zinc Reaction Moles/min?
  • Zn+HCl rates of reaction?
  • ¿Could I use little quantities of sulfuric acid for some enzymatic processes in denims withouth cause damage?
  • ¿How coul I make a liquid soap for use in hospitals?
  • β-naphthol is it acidic? neutral? or alkaline?
  • % recovery errors?
  • % Yield!!!! Plz help?
  • >>~~CHEMISTRY QUESTIONS~~<<plz answer and show calculations?
  • "a radioactive isotope has a half-life of 70 seconds.?
  • "The works" in a glass bottle?
  • (10 points )equations to demonstrate hydrogen peroxide being a reducing agent and a oxidising agent?
  • (3)chemistry questions?
  • (7) solubility products question..thx?
  • (Chemistry) What's the chemical equation that results when...?
  • (Qualitative Analysis Please HELP!) What Salt Is White and Granular?
  • ) List five significant events in the history and development of the chemical processing industry?
  • ) List five significant events in the history and development of the chemical processing industry?
  • .. Chemical Equation for this Titration ....?
  • ...can you give me sites that point out calcium carbonate as a buffer or pH buffer?
  • @Steve_geo?
  • [URGENT] Chemistry Regents Question?
  • ____ is the chemical potential of hydrogen?
  • _________are saturated solutions of volitile substances?
  • 0.1 mol of aluminum hydroxide=?
  • 0.5 g is equivalent of what mg?
  • 1 atm is equal to: 101,325pa or 14.7psi or 760 torr. or 760 mm Hg.?
  • 1 liter of CO2 is in a container that's 25 degrees c. If it's cooled to 10 degrees c what is the new volume?
  • 1 mole of acid neutralizes 1 mole of base?
  • 1 torr is equal to: 1 Pa, or 1 mm Hg., or 760 mm Hg., or 14.7 psi. or all?
  • 1) 2.55 mole Cu2CrO4 convert into mass 2)1.95 mole HNO3 conver into volume 3) 2.00 mole HC2H3O2 to particle?
  • 1) An X-ray tube at STP is evacuated to a pressure of 1 x 10^-4 kPa at 15 degrees celcius. How many molecules
  • 1) An X-ray tube at STP is evacuated to a pressure of 1 x 10^-4 kPa at 15 degrees celcius. How many molecules?
  • 1) find the molar formula of sugar containing 40% carbon,6,7% hydrogen,53.3% oxygen?
  • 1) If hydrogen is collected over water at 19 degrees celcius and the total pressure of the gas is 100.8 kPa...
  • 1) Rutherford said, "It is about as incredible as if you had fired a 350-mm shell at a piece of tissue paper a
  • 1)why should magnesium ribbon be cleaned before it is burnt in air?2)is this an oxidation-reduction reaction?
  • 1. Calculate molality (m), in mol/kg, using the formula delta t = Kf * m.?
  • 1. Calculate molality (m), in mol/kg, using the formula delta t = Kf * m.?
  • 1. Calculate molality (m), in mol/kg, using the formula delta t = Kf * m.?
  • 1.00L of gas at STP is compressed to 473mL. What is the new pressure of the gas?
  • 1.0L volume of gas at 27C exerts pressure of 85.5kPa. What will the pressure be at 127C?
  • 1.19 g of chromium(Cr) formed 1.74 g of chromium oxide. The molar mass of Cr is 52.00 g/mol.?
  • 1.5 kg of fuel.?
  • 1.is water polar or non polar?
  • 1.Why does the inhalation of helium make your voice high-pitched?
  • 1.Zn,Hg,Cd,are not considered as transition elements?
  • 10 helpful & harmful effects of chemistry in society?
  • 10 molal solution is obtained when 11.6g of acetone is dissolved in 22.8ml of benzene.find the density benzene
  • 10 points for a sophisticated answer?
  • 10 points for first correct answer with an details that I find sufficient?
  • 10 points for the 1st correct answer with details that I find sufficient?
  • 10 points to who can find the most accurate estimate of the number of computational chemists in US or world?
  • 10 Points, Can someone please help me check my work?
  • 10.What is the mass percent for the following solution: 10 ml of ethanol in 53 grams of water?
  • 100.g of iodine -123?
  • 100years before how ice cream made at Kolkata when electricity is not there?
  • 10mL is = to how many grams?
  • 10mL of AgNO3 (Silver Nitrate) how many grams?
  • 12 metric tons of carbon equates to how many metric tons of methane?
  • 13.) A solution of nitric acid has density of 1.424 g/mL and contains 70.8% of nitric acid, HNO3, by weight.?
  • 137.6 kilograms convert into ounces please.?
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  • 16.) How many moles of sodium hydroxide, NaOH, are needed to prepare 2 liters of a 2.0 M solution?
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  • 1985 turbo diesel peugeot 505 which leaks fuel from the pump after 2 , 3 hours being off,no leaks when hot ?
  • 1-dichloroethanewhen boiled with aq.NaoOH gives?
  • 1-pheny-2-ethanesulfonate reacts by an Sn1 mechanism or by an Sn2 mechanism?
  • 1sqf = ?dm?
  • 2 chemistry ? please help?
  • 2 chemistry questions - multiple choice?
  • 2 Chemistry Questions?
  • 2 multiple choice questions?
  • 2 multiple choice questions?
  • 2 Names Of Chemical Reactions?
  • 2 Plutonium Questions. Compunds and chemical properties?
  • 2 SO2(g) + 2 CaCO3(s) + O2(g) 2 CaSO4(s) + 2 CO2(g)?
  • 2 stoichemistry problems that i need help solving?
  • 2 testtubes with their 2 openings put together 1 on top n 1 below(filled with air on top) will da air sink?
  • -2,+3,+6.What am i doing wrong in the oxidation?
  • 2.5 L solution has a pH of 3.5...?
  • 2006 paper 3 chemistry section A question 1 (b)???
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  • 200ppm is equal to how many gram?somebody plz help me.thanx.?
  • 20cm3 of a gaseous hydrocarbon were mixed with 90cm3 oxygen and the mixture exploded.At rom temp,60cm3 of gas?
  • 239U+1n=?+140Xe and 8Be+4He=?+y?
  • 24.89g of zinc is placed in 350mL of HCl.next day the mass of zinc is 21.62g.determine 2 cocn of zinc in beakr
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  • 25 g of nitrite ion into 1 L of H20. What's the [OH-] and the ph of solution?
  • 25 mLof 0.23 mol/L NaOH(aq)added to 45 mLof 0.10 mol/L HC2H3O2(aq)what would be the pH of the resulting solut?
  • 25.0mL of the 0.825molL-1 amonium solfate solution was pipetted into a volume metric flask and diluted to?
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  • 25torr, or 55torr, or 75torr, or 133torr, or 150torr?
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  • 2Al(s)+3Br2(l)----->2AlBr3(s)?
  • 2Al+Fe2O3=Al2O3+2Fe Is it exo or endo thermic reaction?Please explain?
  • 2Fe(s)+3Cl2(g)------>2FeCl3(s)?
  • 2Fe(s)+3Cl2(g)------>2FeCl3(s)?
  • 2H (g) -> 2H (l) what force is this called?
  • 2H2O ----> 2H2 + O2 if you start with 2 mol of water, how many moles of hydrogen are produced?
  • 2NaNO3 --> 2NaNO2 + O2... please help?
  • 2NH3(g)+3O2(g)+2Ch4(g)--->2HCN(g)+6H2O(g)?
  • 2Pb(NO3)2 (s) = 2PbO (s) + 4NOs (g) + O2 (g) - I dont understand the effect on the position of the equilibrium
  • 3 Chemistry Multiple Choice Questions?
  • 3 chemistry questions. PLZ help!?
  • 3 Redox Half Reactions?
  • 3.00 moles of NO2 have a mass of what?
  • 3.Why are monosaccharides reducing sugars?
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  • 3NaBH4 + 4BF3 =3NaBF4 + 2B2H6 produces NaBF4 with a yield, based on the amount of NaBH4 used?
  • 4.0g of oxygen contains...?
  • 4.2 ml diluted into 50 ml, 0.05 ml from the latter diluted into 50 ml. what is the overall dilution factor?
  • 42mL of NaOH was used to neutralize 20mL of HCl. The molarity of the HCl was .5 What is the molarity of NaOH?


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