Chemistry Questions and Answers

  • why is methanal a gas at room temperature whereas methanol is a liquid?
  • Why is methane gas at room tempature and octane a liquid at room temperature?
  • why is methane not used for car fuels but instead octane?
  • Why is milk or raw egg used as antidote in case of heavy metal ion poisoning?
  • Why is MnO2 classified as Manganese Dioxide if prefixes applied only to naming molecular compounds?
  • Why is Na's second ionization energy more endorthermic than Na's first ionization energy?
  • Why is N-ethylsaccharin more stable?
  • why is NH4Cl slightly acidic?
  • why is nitrogen dioxide inflammable when it contains two atoms of oxygen and one atom of nitrogen??
  • why is oil bath used to melt solids instead of water bath?
  • Why is only fat extracted when using petroleum ether to extract fat from potato chips?
  • Why is Oxygen a negative 1 charge (anion) in Hydrogen Peroxide?
  • why is oxygen gas more reactive with steel wool and magnesium than CO2 and N2 gas?
  • Why is parahydroxybenzaldehyde more soluble in water than orthohydroxybenzaldehyde?
  • Why is phenolphthalien used?
  • Why is Phenylamine more soluble in dilute hydrochloric acid than in water?
  • Why is procedure for balancing chemical equations so difficult? (even the teacher has difficulty explaining ..
  • Why is radon testing required before a home is sold or bought?
  • Why is Redox Industrially important?
  • why is rubber water resistant?
  • Why is saturated stream is the most commonly used as heat transfer fluid in chemical plants?
  • why is silver not coloured ?
  • why is sodium chloride crystalline but carbon dioxide is gas?
  • why is sodium considered a major nutritional element?
  • why is sodium considered as a nutritional element?
  • why is sodium hydroxide dangerous?
  • Why is soduim considered as a major nutritional element?
  • Why Is Stainless Steel Stainless?
  • why is standard enthalpy of combustion always negative?
  • Why is that fluorine hs only 1 oxidation state when combined with other element?
  • why is that?
  • Why is the atomic mass number considered an average?
  • Why is the bond angle in NH3 only 107 degrees when the bond angle for BF3 is 120 degrees?
  • Why is the bottom of a soda can concave?
  • Why is the carboxylic acid soluble at high pH and not a low pH? Explain your reasoning.?
  • Why is the electrical conductivity of MgO in water much poorer than that of NaCl in water?
  • Why is the element Mercury dangerous?
  • Why is the entropy change of water when it freezes expected to be negative?
  • why is the equilibrium constant for the reaction KHT <==> K+ + HT-...?
  • why is the exhaust valve bigger than the intake valve, in the four-stroke cycle engine?
  • Why is the final product from crystallization process isolated by vacuum filtration and not by gravity filtrat
  • Why is the geometry of a molecule not always the same as the electron geometry?
  • Why is the Heisenberg uncertainty principle not significant when describing macroscopic object behavior?
  • Why is the Ideal Gas Law important?
  • why is the kinetics of oxygen reduction is faster in alkaline than in acidic environment?
  • Why is the melting point of an unsaturated fatty acids lower than saturated with the same no. of Carbons?
  • Why is the melting point of KBr lower than that of both NaCl and NaF?
  • Why is the melting point of NaF higher than that of Nacl?
  • Why is the reactivity of alkylhalides toward alcoholic silver nitrate is 3o>2o>1o? o=degree?
  • why is the relationship of vapor pressure of water and its temperature exponential?
  • why is the simplest formula used to determine the molar mass for ionic compounds?
  • Why is the top of an aluminum soda can round?
  • Why is the triple beam more accurate than the double pan balance?
  • Why is the vapor pressure of water important in an experiment to determine the molar mass of Mg?
  • Why is the water level dropping in a test tube with a galvanized screw and tap water?
  • Why is ther helium as well as Oxygen in Divers air tanks?
  • Why is there a difference between commercial brandy being brown and "raw" brandy being colorless?
  • why is there more evolution of h2 gas when zinc reacts with H2O than with dil.HCl?
  • why is there no reaction between potassium chlorie solution and zinc?
  • Why is there variety of synthetic carbon compounds?
  • why is this following question wrong??
  • Why is this soluble in water?
  • Why is thymine favored and not uracil in DNA molecule?
  • why is Titanium Dioxide is a semiconductor?
  • Why is universal indicator more useful in determining the pH range of solutions?
  • why is ununhexium [(116)Uuh] unreactive?
  • why is uranium a crucial ingredient to a nuclear bomb?
  • Why is water a liquid at room temperature, whereas carbon monoxide is a gas at room temperature?
  • why is water able to put off fire?
  • Why is water added to convert magnesium nitride to magnesium oxide, and what effect does this have on the MgO?
  • Why is water an inorganic compound, not an organic compound? Does it not have both carbon and hydrogen?
  • why is water effective at putting out fires??
  • Why is water formed instead of carbon dioxide when methane burns in a limited supply of air, (combustion)?
  • Why Is Water Not Combustible and why does it put out Fires ?
  • why is water transparrent?
  • why isn't an aqueous solution of sliver nitrate used fro electroplating an article with silver tho it's a good
  • why isn't gold put intoframes window?
  • Why isn't H2O written as OH2?
  • Why isnt Hydrogen used for balloons?
  • why isn't p-nitroaniline be prepared by nitration of aniline?
  • why it CuSo4 absorbs water and why Nacl can't?
  • why it is important to know how to separate solids from liquids?
  • Why it is said that if we consume coke and mentos together then it will cause something fatal?
  • why labs are important in science?
  • Why LPG is heavier than air & lighter than water?
  • why metals conduct electricity and non metals do not . what is the reason behind it.?
  • Why MgCO3 and NaHCO3 are bases?
  • why might a glass vase survive a fall onto a carpeted floor but not onto a concrete floor?
  • Why might an insulator be transparent?
  • Why might two substances that can potentially react sit side by side for years without reacting?
  • why milk coagulate is happened?
  • Why must food be boiled for longer time at higher elevations?
  • Why my teacher said that carbon can't form a quadriple covalent bonds with another carbon?
  • Why my teacher said that carbon can't form a quadriple covalent bonds with another carbon?
  • Why NaOH needs to be obtained in a dry flask?
  • Why neutral fats are called "neutral"?
  • why noble Prize are not given in the field of mathmatices?
  • Why our blood stream need enzyme?
  • why over heated bricks floats on water?
  • why pepsi-mentos is fatal?
  • why pitric acid is use as treatment for burns?
  • why proteins gone wrong?
  • Why rubies and sapphires display such different colours?
  • why semi conductors behave normally?
  • Why should the mass of the crucible be measured immediately after the crucible cools, and not later?
  • why should you not drink large quantites of seawater?
  • why so many coordination compounds of transition metals are brightly colored?
  • Why solid ice loses its shape when it melts?
  • why some compounds are hydrated and some are not?
  • why sucrose is easily hydrolyzed in an acid solution?
  • Why sugar dissolves faster in hot water than in cold water?
  • why tetra bond not possible between two carbon atoms?
  • why the atomic radius decrease within a period when moving from left to right in a Periodic Table?
  • why the biuret test gives negative result to amino acid and dipeptide?
  • Why the chemical reaction is very high when dilution of acid or alkali take place which may cause explosion?
  • Why the concentration of water is always the same?? (look below)?
  • why the energy of conduction band n valence band for holes more than that of electrons ?
  • Why The Light Bulb Lits In Salt Water And Not In Sugar Water?
  • why the lime water become turbid?
  • Why the metal conduct electricity when they are soild?
  • Why the molecules of chloroform don't form hydrogen bonds with water?
  • why the oxygen is widely used in the manufacture of nitric acid?
  • why the solubility of all ionic solids increase as the temperature increases?
  • Why the surface concentration of butanol solution does not change even the bulk concentration increases?
  • why there is a sudden change in pH value in titrations between strong acid and strong alkali?
  • why there is pH variation in water sample on keeping for some days??
  • why there no sheilding effect as we go left to right in the period of the modern periodic table?
  • why use an indicator which turns color at pH = 9 or 10 in titrating an acidic solution with a basic one?
  • why use magnesium strip in a solution of acid?what does this tell you?
  • why was blood give a positive in benzidine test?
  • Why was it necessary to create a periodic table?
  • why was it necessary to modify daltons atomic theory?
  • Why was the sample cooled to room temperature before measuring the absorbance?
  • why was water or dilute nitric acid used for washing the barium sulfate?
  • Why water forming the homogenous solution with aqueous solution?
  • why we inject carbon dioxide in desalination water?
  • why we use citric acid in Ni-DMG complex extraction?
  • why were noble gases discovered later than most other elements?
  • Why wet clothes dry more quickly on warm days than on cold days?
  • why when your in the bath do the bubbles disappear when you use the soap?
  • why will water not mix easily with oil?
  • Why won't fat and water mix? explain on the MOLECULAR level.?
  • Why won’t metalic elements bond with each other?
  • Why would a dirty buret be less accurate and also less precise than a clean one in chemistry?
  • why would adding water in a flask be important?
  • why would one mole of calcium chloride be more effective than one mole of sodium chloride?
  • Why would pharmaceutical companies use glycerin in toothpaste, acne ointment, ear drops and eye drops?
  • Why would the pH of pure neutral water heated from 25 Celsius to boiling DECREASE?
  • Why would urea, a polar molecule, be soluble in both a polar and nonpolar solvent?
  • Why would urea, a polar molecule, be soluble in both a polar and nonpolar solvent?
  • Why would water boil if its atmospheric pressure was taken away and why does steam come out?
  • Why would you want to use carbon tetrachlorida for IR spectroscopy?
  • why, if you put hot and cold water in a freezer the hot one freezes first?
  • Why, when carrying out kinetic studies, it is necessary to mix the solution very quickly?
  • Why????
  • Why???asdfasdf?
  • wicked urgent chemistry questions!! plzzzz answer. showing calculations wud be great?
  • WilI increased pressure on a gas at constant temperature cause the volume to decrease?
  • Will 1 liter's worth of electrolyzed water (2H2 and O2 gas) when combusted produce 1 liter's worth of water?
  • will a reaction occur between a mercury metal atom and a lead(II) ion? If so write out the equation.?
  • Will a red blood cell undergo crenation, hemolysis, or no change in each of the following solution?
  • Will acetone vaporize spontaneously at 60 degrees celsius?
  • Will anyone help me with this one Chemistry problem that I so do not understand?
  • Will atmospheric pressure cause a watch crystal to crack?
  • Will boiling water already decompose it to hydrogen and oxygen?
  • Will changes in ph can have on the drinkability and usability of water.?
  • will chlorine bleach damage my gold and diamonds?
  • WILL GASOLINE DISOLVE TEFLON TAPE?? need to know?
  • Will it matter if you havent cut your hair if you have taken drugs?
  • Will potassium hydroxide be a strong, weak, ot non-electrolyte when dissolved in deionized water? Why?
  • Will salt and sugar have a chemical reaction? Will they if heated? If so what will happen?
  • will someone explain this chemistry problem to me?
  • Will someone help me out? Chem teacher did not explain it to me!?
  • will someone help me with chemistry?
  • will someone help me with this chemistry problem?
  • will the detection of the elements present in the organic compounds help in their identification?
  • Will the increasing CH2 in a carbon chain increases the reactivity or the other way around?
  • will the increasing CH2 in a carbonyl chain increases the reactivity or the other way around?
  • will the mass of a catalyst changed after a experiment?
  • will there be temperature change during an electrolysis?
  • Will waxes give positive result toward acrolein test?
  • wine chemistry?
  • witch is the agriculatral zinc manufactring raw material web site?
  • With all the ecstasy consumed throughout the world,where is it created?
  • With increasing temperature, the solubility of a gas in a liquid?
  • With Iran enriching there uranium for "friendly" purposes...?
  • wizard of chemistry?
  • Word equations and balnced chemical equations.?
  • word equations?
  • Work out Rate of Reaction?
  • working out a concentration in mmol/l?
  • Working out rate of reaction?
  • working out the concentration of a solution...?
  • world's poisonous chemical?
  • wot does the e stand for after a quantity of ml eg. on shampoo bottle or talc? 500ml "e"?
  • Would a gold ring be a good conductor of electricity?!?
  • Would an Atom with a high electronegativity more likely react with an atom with high or low ionization energy?
  • Would C4H10 or C4H8Cl evaporate more readily?
  • Would H2O or CCl4 be expected to have a higher boiling point?
  • would hell be endothermic or exothermic explain your answer?


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