Chemistry Questions and Answers

  • When bowling pins at the end of an alley are hit by a bowling ball, the entropy of the pins ______?
  • When converting temperature from Kelvin to Celsius, you must ?
  • When do you use malonic ester and when EAA?
  • When elements react to form compounds,...?
  • When energy is converted to one form to another, what is usually produced?
  • When ethane (C2H6) reacts with Cl2, the main product is C2H5Cl but other products containing Cl, such as C2...
  • When exposed to oxygen, what colour flame does Tin burn with?
  • When gaseous nitrogen and hydrogen are converted to gaseous ammonia, 鈻睪^0= 16.64kJ/mol.?
  • When H2 and O2 "combust" do they explode or implode?
  • When heated, sodium metal combines with chlorine gas to form solid sodium chloride...?
  • When hydrogen chloride is eliminated frm 2-chlorobutane,three isomeric alkenes wif the formula C4H8 r prduced?
  • When is propane a liquid?
  • When leaves change color, is that a physical or chemical change?
  • When methanol, CH3OH, is dissolved in water, a non-conducting solution results. When acetic acid, HC2H3O2, dis
  • When nitrogen reacts with oxygen to form nitrogentrioxide gas, the reaction starts out very quickly..?
  • When oil is heated for cooking and food is added how do the 2 smells combine?
  • When one formula unit of Co(No3)2 is dissolved in H20, what ions are formed?
  • When one substance has been dissolved in another, a ____ is created?
  • When petroleum runs out, what will we make plastics out of?
  • When piperonal & 1-indanone are mixed, why do they liquify?
  • When potassium iodine reacts?
  • When propene and bromine react what does this form?
  • When sinking Ag in NaHCO3 in H2O to remov tarnish do I disolve the NaHCO3 or springle over silver?
  • When six protons and six neutrons unite to form a carbon atom, the net mass of the 12 nucleides decreases?
  • When sodim reacts with water, is the resulting solution acidic or alkaline?
  • When solving a chemistry problem, what does P = nRT mean?
  • When sufficient quantiity of heat has been added to reach the boiling point of a solution, what happens to any
  • When sulfur trioxide gas reacts with water, sulfuric acid forms?
  • When synthesizing a polymer, a condensation reaction is formed by the head-to-tail joining of what?
  • When the enthalpy of dissolution is positive, should solubility increase/decrease w/ increase in temperature?
  • When the equation N2 + H2 ---> NH3 is balanced, the sum of the coefficients is...?
  • When the wax of a lava lamp is on the top, how are the molecules behaving?
  • When they say a pool has "chlorine" in it, what is it actually?
  • When they say gold is th best conducter of elcetricty what do they - ?
  • When to use Covalence and Electrovalence?
  • When two atoms of different electronegativty values form a covalent bond does it result in polarity?
  • When unsaturated aqueous solutions of sodium nitrate and potassium chloride are mixed, the molecular and ionic
  • When using sodium hydroxide, NaOH as a solvent, how does a carboxylic acid dissolve in it ...?
  • When was platinum founded?
  • When water evaporates, is it giving off hydrogen gas?
  • When water loses oxygen through, does it affect its chemical make up?
  • When were the safety matches invented?
  • When will one liter of chlorine gas (99.9 %) despersed into a closed room reach a concentration of 10 ppm ?
  • When writing the metal oxidized in redox equations, do you include a subscript?
  • When writting a chemical compound why do we cross the charges?
  • When you calculate percent error what is the cause if the percentage is higher than 100%?
  • When you burn gunpowder, it leaves a blue residue. What is this blue stuff?
  • When you burn your hands on a stove..?
  • When you double the distance from a radiation source, how do the counts per minute (CPM) change?
  • When you exhale is carbon dioxide or monoxide??
  • When you hold onto the dome of a machine called Van de Graaff generator, why does your hair stand up?
  • When you make ice cubes: it is a exothermic process, or the heat of vaporization must be removed, or?
  • When you put nitrogen and hydrogen together what happens?
  • When you use alcohol in sanitizers, is it biodegradable?
  • When you walk on the carpet with your socks on, do the electrons from the socks transfer onto the carpet, or..
  • When you're doing chemistry work, do you use as much logic as in mathematics?
  • Where are nonmetels located on the periodic table?
  • Where are the chemistry wizs?
  • Where can I buy 30% Hydrogen Peroxide, Sodium (or Potassium) Iodide, and Lycopodium Powder in New York City?
  • Where can I buy a high end electrolisys machine for converting water into hydrogen/oxygen?
  • Where can I buy Aluminum Powder?
  • Where can I buy Ethonal?
  • WHERE CAN I BUY kno3?
  • Where can i buy luteolin -3.5-diglucuronide?
  • Where can I buy raw elements?
  • Where can i buy raw sodium?
  • Where can I buy rubber mix or the ingredients to make rubber?
  • Where can I buy Sodium Acetate in the Uk?
  • Where can I find a full chart on the rockwell hardness that has all types of metals ect...?
  • Where can i find a list of Coagulants for Flocculation with low or no Toxicity?
  • Where can i find a shell from a gastropod?
  • Where can I find a textbook online that I can read for free?
  • Where can i find a web site or instructions on how to make liguid nitrogen?
  • Where can i find an electron shell diagram of Vanadium?
  • Where can I find an example of an Investigatory project connected to biochemistry?
  • Where can I find answers to my chemistry homework?
  • Where can i find dry ice on the island of maui?
  • Where can I find free literature about industrial uses of ammonium metavanadate on Internet?
  • Where can I find good/cheap/lab glassware for organic synthesis..?
  • Where can I find litmus paper?
  • Where can i find methods of preparing cinnamic acid?
  • Where can I find Organic Chemistry reactions and synthesis problems?
  • Where can i find pictures related to chemistry processes? kindly suggest me some websites?
  • Where can I find Potassium Nitrate?
  • Where can I find practice chemistry tests with answer keys?
  • Where can I find sodium iodide?
  • Where can i find some teflon tubing:?
  • Where can i find the crystal structure of lithium sulfate monohydrate?
  • Where can i find the lewis symbol diagram for SiCl4?
  • Where can I find the lubrication oil equivalent table?
  • Where can i find the lweis symbols for SrCl2?
  • Where can I find the size of a molecule C5H8.?
  • Where can i found, monodiethylamin industry?
  • Where can i get EDTA - ethylenediaminetetraacetic acid - tetrasodium salt?
  • Where can i get a dot diagram for zirconium the element?
  • Where can i get a good periodic table from to print out?
  • Where can I get ammonium chloride?
  • Where can i get chloride ion?
  • Where can I get chloroform?
  • Where can i get h2so4 i.e. sulphuric acid?
  • Where can I get liquid Sodium?
  • Where can I get Sodium Acetate Salt?
  • Where can I get some Cyanide?
  • Where can i get the chemical structure for Starch?
  • Where can I purchase chloroform?
  • Where can i sell or dispose of liquid mercury?
  • Where can rhodium be found?
  • Where can we get pH paper in california?
  • Where can you buy pure sulfer?
  • Where can you buy sulfur?
  • Where can you get powdered aluminum, powdered iron oxide, and magnesium?
  • Where can you usually get a complete set of equipments that you will be needing for a science fair project?
  • Where coud i find potasium nitrate at around the house?
  • Where could I get Chloroform or other Inhale Unaesthetic in Mambai?
  • Where did the letter that is used to show the short form of the element come from? eg- Zinc = ZN?
  • Where do i get cornstarch?
  • Where do I get sodium pentothal?
  • Where do natural isotopes exist? Where are artificial isotopes synthesized?
  • Where does nuclear fusion occur?
  • Where does petrol come from?
  • Where does the energy come from in an exothermis reaction? what happens to the system? and the surroundings?
  • Where does the energy go to in an endothermic reaction when the surroundings get colder?
  • Where does the liquid metal Mercury come from? Is it found in a natural state? Or is is manufactured? Thanks!?
  • Where does water go when it drys?
  • Where in the atom would matter be found?
  • Where in the UK is a one stop shop for Chemistry Equipment?
  • Where is endothermic reactions used in everyday life?
  • Where is found Maurizia?
  • Where is silver found in it's natural element?
  • Where is sodium stored in? Suggest why?
  • Where is the gas smell coming from?
  • Where is the majority of the worlds copper mined at?
  • Where to buy Dry Ice?
  • Where to buy sulfur?
  • Where to find glue tape patents?
  • Where was the element hydrogen found?
  • Where would you find sulfur?
  • Whether phosphurus is a conductor?
  • Whether time for cbse revaluation has over?
  • Whhich of the following could not be titrated by .100M HCl solution no matter which indicator you used?
  • Which molecule has a bond angle of 104.5掳?
  • Which acid is also known as "Oil of Vitriol"?
  • Which acid is found in yorghut,let alone lactic acid?
  • Which acid is present in coffee?
  • Which among hexane, toluene, and naphthalene would make a better fuel? Why?
  • Which atom has a change in oxidation number of -3 in the following redox reaction?
  • Which balanced equation represents an endothermic reaction?
  • Which balanced equation, represents a redox reaction?
  • Which ballistic material is better for Bullet proof vests, Kevlar or Spectra?
  • Which base works best to maximize the E2 product in the reaction?(CH3)2CHCH2CH2CH2Br+base-->(CH3)2CHCH2CH=CH2
  • Which bond is stronger ionic or covalent?
  • Which bond is the most polar? 1.) C-C 2.) C-H 3.) N-H 4.) 0r C-N?
  • Which bond is the most stable?...?
  • Which bonds with oxygen??
  • Which cation forms white precipitate with sulphuric acid?
  • Which change of phase is exothermic?
  • Which chemicals do I need to determine the mass of the calsiumsulphate in 0.5dam water?
  • Which coin rust faster in fresh water or salt water?
  • Which color indicates the hottest part of a flame? RED or BLUE?
  • Which colors when mixed together make the color brown?
  • Which companies do produce the carbon-hydrogen refrigeration in the world?
  • Which compound in liquid form will have the highest vapor pressure?
  • Which compound is the least soluble? CuS, Ksp=1.27 x 10 -36, or AgCl, Ksp=1.77 x10-10, or Agl, Ksp =8.51x10-17
  • Which compound will have the highest boiling point?
  • Which compound will havethe highest boiling point?
  • Which country produces the most of these metals?
  • Which crystallisation technique is used for the experiment on "preparation & recrystallisation of aspirin"?
  • Which decays faster: an isotope emitting gamma radiation or an isotope emitting beta radiation?
  • Which decays faster: beta radiation or gamma radiation?
  • Which decays faster: Cessium 137 or Carbon 14?
  • Which describes an acidic solution?
  • Which detergent breaks up oil best?
  • Which dissociates more in potassium hydroxide? a strong acid or a weak acid?
  • Which dissociates more in water? a strong acid or a weak acid?
  • Which do conduct more electricity, acids or organic compounds?
  • Which doesnt have an octet of 8 electrons surrounding its central atom 1.) BCl3 2.) CCL4 3.) NCL3 4.) CL2O?
  • Which dye was likely to have caused the spot?
  • Which element does uv radiation react with the most on the periodic table.?
  • Which element in this group is the least reactive?why?
  • Which element increases its oxidation number in the following reaction 3KOH + H3PO4 -> K3PO4 + 3H20?
  • Which element is least reactive?
  • Which element would have physical and chemical properties similar to chlorine?
  • Which Enzymes does 10潞C Cold Water and Ice have?
  • Which Enzymes does 60潞C hot water have?
  • Which form of carbon is more oxidized?
  • Which formula represents a nonpolar molecule containing polar covalent bonds?
  • Which freezes faster? salt water or water?
  • Which fuel, petrol or diesel, is better to use in extremely cold environments?
  • Which gas has the highest effusion rate? Ar, He, Cl2 or Br2?
  • Which half-reaction shows conservation of charge?
  • Which halogen has highest electron attinity?
  • Which halogen has the highest electron affinity?
  • Which has both covalent and ionic bonds?
  • Which has more mass?
  • Which has no molecular geometry?Sulfur Dioxide, Carbon Dioxide,C2H2 and XeF2?
  • Which has the highest heat of hydrogenation? 1.1-hexene 2.trans-2-hexene 3.cis-2-hexene 4. 2-methyl-2-pentene?
  • Which has the largest solute particle size?
  • Which has trigonal planar geometry? (can be more then 1) 1.)CO3 2- 2.)NH3 3.) CH3+?
  • Which have the highest and lowest boiling points?
  • Which inert gas is used in electric lamps,weather ballons and in making neon signboards?


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