Chemistry Questions and Answers

  • Hg metal from HgO?
  • Hi can someone help me solve these 3 chem problems?
  • Hi guys.How long would it take for the rust to penetrate a tin can?
  • Hi i am in 11 grade i wanna prepare aslide show on physics nd chemistry(environmental) as hhw suggest cat can?
  • Hi i bought this chemistry set and i dont know what to do with it do you know any experements i can do?
  • Hi people i am here for another chem ques plz help!!?
  • Hi to all..,Can you give me an investigatory project?.., Plss...?
  • Hi to all..,Can you give me an investigatory project?.., Plss...?
  • Hmmm, is there a negative order of reaction?
  • Hob Gas burning bright orange?
  • HOMEWORK HELP! is it true that the first living things were probably jellyfish?
  • Homework help! pls...?
  • Homework help!!?
  • Homework Help...Net Ionic Equations?
  • Homework question, cant find the answer anywhere: "how are chemical reactions governed by solubility?"
  • Homologous series?
  • Household items for a specific need?
  • How can i recycle silver from silver chloride?
  • How do i work oxidation problems?
  • How a fire estinguisher works?
  • How are ferrite, cementite and pearlite formed?
  • How are leucine, serine and cysteine amino acids similar and different?
  • How are Phosphorous 32 and Phosphorous 33 different other than half-life?
  • How are plastics made from petroleum?
  • How atoms get energy to move about?
  • How Calculate n(H2) obtained from 1.000 gram of Al. Also, calculate n(H2) obtained from 1.000 gram of Zn.?
  • How can cells form and survive at first ?
  • How can heat contain electrons?
  • How can hydrogen bonds be removed from a sugar?
  • How can I balance the following chemical equations?
  • How can i convert human excreta into manure?
  • How can I draw the Lewis structure for each disaccharide?
  • How can i encapsulate powders?
  • How can i extract cellulose from water plants? water hyacinths?
  • How can i find the mass and volume of a liquid if im given the density of it?
  • How can i gauge a molecules intermolecular forces, only using the periodic table?
  • How can i get brown stains off my hands from 1 M Potassium Chromate from chemistryl lab??
  • How can i get flash powder?
  • How can I hydrolyze the double bound of Styrene, to obtain Ethyl-benzene?
  • How can i improve my science investigatory project, "stamp pad ink from used motor oil"?
  • How can I increase specific Gravity of water from 1 to atleast 1.9.?
  • How can i learn to use more than 10% of my brain?
  • How can I make a hydrolysis device?
  • How can i make a model of a hexagonal closed packed structures?? can u give some hints on its preparation?
  • How can i make a torch that can burn for hour or more?
  • How can i make asid split test for emulsion of boron oil?
  • How can I make sodium acetate? What do you do with the baking soda and the vinegar?
  • How can i measure the ethanol concentration in a substance?what materials do i need?
  • How can I prepare a pure dry sample of potassium phosphate?
  • How can i say that a certain tableware is of Melamine material or Urea?
  • How can i separate starch from rice??
  • How can i seperate sugar and salt from water without using any lab apparatus?
  • How can I tell if something is contaminated with plastic?
  • How can I test for real gold?
  • How can I test paper to see if it is acid free?
  • How can I test this hypothesis?
  • How can rubbing alcohol illuminate germs?
  • How can tert-butanol be dried?
  • How can using moles be useful in doing calculations in stoichiometry? At least two reasons?
  • How can we change Gold into its monoatomic state?
  • How can we determine the longest relaxation of molten polymers? Thanks.?
  • How can we distinguish CH3NHCH3 from CH3(CH2)5CH2NH2?
  • How can we know that an element is a monoatomic if we only know its proton number?
  • How can we made algebra and chemistry an easy one?
  • How can we remove the stink on the crustacean shells?
  • How can we separate a mixture of salt ,water and sulpher?
  • How can we use the potassium permanganate as indicator for the purpose of laundry powder demonstration?
  • How can you detect the level of formaldehyde in the air in a living room from hardwood floors?
  • How can you extract starch from vegetables, fruits, root crops?
  • How can you isolate/purify potassium?
  • How can you melt and combine leftover pieces of handsoap?
  • How can you tell if a metal is gold?
  • How can you tell if something is an ionic or covalent bond just by looking at the formula: NaCl, H20, etc...?
  • How can you tell when a molecule has one triple bond?
  • How can you test a metal to determin if it is gold?
  • How come the red and the white lines in the toothpaste never mixed?
  • How come they tell you not to put batteries in backwards?
  • How components will seperate in hplc column & what do you mean by polarity?
  • How could Hansen solubility parameter be determined ?
  • How could I "prove" that "DELTA E" is a state function..?
  • How could i produce a rose with the color black?
  • How could some of the elements in the periodic table could be made, when they are an "element"?
  • How could the radius of Hansen solubility parameter determined??
  • How could you determine the specific halogen present in yout test compound after fusion?
  • How could you prove that a catalyst does not react during a chemical reaction?
  • How could you separate a mixture of gravel and sand?
  • How did avogadro dicover the avogadro number?
  • How did each of the following people contribute to the DNA molocule?
  • How did fire, water, earth, and air delayed the advancement of scientific thought in chemistry?
  • How did Newland know the true atomic weight of Beryllium(9&not13.5),before Mendeleev corrected it?
  • How did u complete this equation Fe2(SO4)3+Ba(OH)2-------?
  • How do atoms and molecules form solids?
  • How do cholesterol remodeled to become compounds of vitamin d?
  • How do coloured pencils get their colours? do they add in coloured dyes to the graphite and clay?
  • How do compounds differ from mixtures in terms of composition?
  • How do compounds form acids in solutions and what kinds of compounds tend to do so?
  • How do conversions involving volumes (ft3 to m3) differ from standard conversions (ft to m)?
  • How do crack and cocaine differ?
  • How do crosslinkers work?
  • How Do Glow Sticks Work? And How Are They Not Toxic?
  • How do green flames work on lighters?
  • How do i assemble a simple closed circuit? what is the chemistry behind it?
  • How do I balance and find net ionic equation for Cu(NO3)2*3H2O+Na3PO4*12H2O and Fe(NO3)3*9H2O+Na3PO4*12H2O?
  • How do i balance this equation P4(s)+O2(g)=P4O10?
  • How do I calculate the net chage on a Aspartate molecule at a particular ph (ex. 1.0, 3.0, 6.0, 11.0)?
  • How do I calculate theoretical yield here?
  • How do i concentrate hydrogen peroxide?
  • How do I convert .0572 mg/mL to ng/L?
  • How do I convert from Molarity to Molality?
  • How do I determine how many anions or cations are in an equation??
  • How do i determine the higher boiling point between molecules?
  • How do i determine the molecular formula of an unknown compound?
  • How do I dilute a 50% NaOH solution to a 3 molar solution?
  • How do I draw a "dot and cross" diagram to show the chemical bonds?
  • How do i figure out the Molarity (moles/liter) with the following data?
  • How do i find hydrogen ion concentration in mol l-1 when0.32g of nitric acid in water to make 0.050l of final?
  • How do i find the empirical formula if i have the molecular formula?
  • How do i find the formula for this compound?
  • How do i find the number of moles of an element if the number of atoms is given?
  • How do i find the number of valence electrons in an atom?
  • How do i found einecs no. of reactive dyes ?
  • How Do I Get The Gold Out Of Borax "Glass"?
  • How do I go about working this problem out? Through limiting reagent type problems? If so how exactly?
  • How do I insert a delta (triangle) and a degree sign?
  • How do i know when to use grams or milligrams in calculations?
  • How do I make [NH3]=[NH4]=1, that is how would I make a solution in which the ammonia and ammonium concentrati
  • HOW DO I MAKE a ZERO POINT ENERGY BATTERY?
  • How do i make bio diesel from used sunflower/vegetable oil?
  • How do I make gunpowder burn faster?
  • How do I make my own water-based lubricant?
  • How do I make the gel found in keyboard wrist pads, or where can I find a manufacturer?
  • How do i make up 10mM of acetic acid(ethanoic acid)?
  • How do I memorize the periodic table by their groups and properties, and individual atomic #, atomic weight?
  • How do I mix a 2% solution of boric acid?
  • How do i prepare potassium phosphate?
  • How do I rewrite equations as ionic equations? Somebody help me pls?
  • How do I transform a liquid substance into gel( like a toothpaste gel)?
  • How do I work out the molar mass of HNO3?
  • How do ionic bonds, covalent bonds, and polar bonds differ?
  • How do paper poper work?
  • How do the chemical characteristics of the elements in a period change from left to right across the periodic?
  • How do the volumes of water displaced by each sample compare? Explain?
  • How do they freeze carbon dioxide to make dry ice?
  • How do they get nuclear fission to take place in a Reactor?
  • How do u determine the concentration of hydrochloric acid by thermochemistry?
  • How do we compute for a mole in a specific substance?
  • How do we determine the concentratin of a substance by thermochemistry?
  • How do we distinguish the three types of mixture?
  • How do we find grams of water per 100g hydrate, then mumber of moles of water?
  • How do we say that CH3COOH (acetic acid-vinegar) is a acid when it contains OH atoms ( a quality of bases)?
  • How do you account fir the observed solubility of naphthalene?
  • How do you balance chemical formulas?
  • How do you balance the following equation? I4O9(s) I2O6(s)+ I2(s)+O2(g)?
  • How do you balance this equation and what type of chemical reaction is it?
  • How do you balance this skeloton equation?
  • How do you calculate the average atomic mass of lead?
  • How do you calculate the mass..involve Avogadro's number?
  • How do you calculate the moles of these problem?
  • How do you calculate the salt content of a water sample if u have 480mg/L of chloride and 291mg/L of sodium?
  • How do you compute for the npk formulation in fertilizers?
  • How do you create a salinity standard solution?
  • How do you create oxygen from carbon dioxide?
  • How do you de-ionize water?
  • How do you determine the boiling point of a liquid using the Clausius-Clapeyron equation?
  • How do you determine the neutrons in an element, the protons in an element, as well as charge and mass?
  • How do you do HETP calculations?
  • How do you do this Chem problems...please help,thanks?
  • How do you do this word problem, help me out please?
  • How do you express orthophosphate as a value of total Phosphorous?
  • How do you extract chitin from mushrooms?
  • How do you figure out the molarity of a solution if the only information you have is the volume?
  • How do you find the atomic mass of an unstable isotope?
  • How do you find the catalyst in thermochemical equations?
  • How do you find the concentration in ppm?
  • How do you find the intermediates in a reaction?
  • How do you find the volume of a substance?
  • How do you freeze a glass of water to the tabletop?
  • How do you get teflon to stick to a skillet if nothing sticks to teflon?
  • How do you get the CO2 canister out of a can of whipped cream?
  • How do you know if its homogenous or heterogenous mixture?
  • How do you make a glow in the dark solution from household items?
  • How do you make a molotov cocktail?
  • How do you make fuses without gunpowder??
  • How do you make gun powder?
  • How do you make HHO?
  • How do you make methyl alcohol from methane gas?
  • How do you make sugar from carbon, hydrogen and oxygen?
  • How do you manufacture solid alcohol cooking fuel?
  • How do you name a compound that is an alcohol and an alkene? example: CH3CH=CHCH2CH2OH?
  • How do you potty train a rabbit?
  • How do you prepare a crucible and cover for lab use?
  • How do you prepare an ester in the lab using alcohols?
  • How do you prevent freezer burn(ice crystals) after you open an ice cream container?
  • How do you separate a heterogeneous mixture of zinc powder, mercury, sulfur and iron?
  • How do you seperate the hydrogen and oxygen atoms in water?
  • How do you seperate these folowing mixtures?
  • How do you set up a filtration system (gravity and vacuum)?
  • How do you set up an ice bath for chemistry lab?
  • How do you solve this Chem word problem?
  • How do you use a watch glass in titration?


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