Chemistry Questions and Answers

May i know how to experiment out which brands of apples is sweeter and sour?without tasting it?

Measure rate of enzymic browing for banana using UV/V?

Measuring the alcohol concentration of pre-made wine?

Mechanical Mixture, Compound, Solution, or Element?

Mechanism for cholesterol synthesis?

Melting of wax is a physical thing?

Melting point of several items, please help?

Melting points of ionic and covalent compounds..?

Metal that turns Gold color when put in water?

Methane gas?

Methanol and sulfuric acid?

Method for production of silver chloride powder?

Method for production of silver chloride powder?

Mg3N2 +6H2O- 3Mg(OH)2 + 2NH3-- How many grams of H2O are needed to produce 150g of Mg(OH)2?

Microscope?

Mix up?????????????

Mixture problem! HELPHELPHELP!?

Molality anyone?

Molality of 18M sulphuric acid(density=1.8grams per ml)is??

Molar concentration from titration value?

Molar Concentration: Gas Laws?

Molarity of a solution?

Molarity of acids?

Molarity of solutions?

Molarity problem using specific gravity?

Molarity Problem?

Mole Fraction Question!?

Mole qn...?

Molecular Formula vs. Empirical Formula?

Molecular structure of APDC?

Molecular structure of C2H4?

Molecular weight of a volatile compound (part 3)?

Molten sodium bromide.?

Monoprotic acid?

Monoprotic acid?

More basic chemistry help.?

Mosquito repellent DEET is synthesized from what?

Most prescription drugs are organic molecules?? True or false?

Multi-Colored Lighters?

Multiple choice need help plz?

My car can't start after it has been left, without being used, for one month,why is this happen?

My chemistry teacher metioned there was a table?

My gold rings turning into silver?

My nail is on fire how do i put out the flame ?

My pimpols?

My thermometer broke and the mercury leaked out, how do I clean it up?

NaCl concentration in 1.0 liter of seawater?

Name 8 chemical based compounds used in our homes?

Name a compound which has both an ionic and covalent bond.?

Name acid listed on vinegar bottle?

Name all the tools used to cut diamonds.?

Name of compound ni(Co)4?

Name of Fuel? Seed?

Name one way of controlling fire?

Name one way to prevent fire?

Name or provide a formula for the following..?

Name substances "P", "Q" &"R".?

Name the common acid HCL which is in your stomach and is used to clean mortar off of newly laid bricks is...?

Name the constituents of steel and stainless steel?

Name the reagents and conditions to convert benzene into: -?

Name the three factors that affect the solubility of a solute in a solvent?

Naming organic compounds and binary salts?

Naming oxoacids?

Naming Polyatomic Ions - Help!?

Natural gas contains 84% CH4, 10% CH6, 3% C3H8, 3% N2...?

Need an experiment idea?

Need Chem Help! Relates to finding molar concentration given Ksp!?

Need chem help.drawing figures?

Need help finding the products of the reaction between nitric acid and aqueous ammonia...?

Need help in chemistry !?

Need help in orgo;?

Need help on this problem??

Need help please! chemical name & formula?

Need help plzzzzz urgentlyy!!v if u love chemistry help mee!?

Need help solving a chemistry totration prob.?

Need help solving Chem problem?

Need help with AP chem...graphite density...?

Need help! For EH3 compound, E is 90% in weight. What could be the compound molecular formulae?

Need help.?

Need some help?

Need thermite?

Need to give a presentation on Electron Affinity - need some help?

NEEED HELP A.S.AP!! WEAK TEA IS AN EXAMPLE OF? please help!?

Nernst Eq. - Sign Of Ecell Changes For Various Cell Changes?

Nernst Equation Applied to Half-Reactions?

Nernst Equation Question?

Nerolin is it an alcohol, ester, ether or ketone?

New methods for use of waste materials?

Nickel plated surface became greenish. What's the root cause ?

NiCl2 with a weight of 0.235 grams is heated to drive off the water leaving a weight of .235 formula of hyd?

Nitrogen reacts with oxygen to form two compounds. Compound A?

Nitrogen, oxygen, argon & carbon diaxide are? {multiple choice}?

Nitrogen, oxygen, argon & carbon diaxide are? {multiple choice}?

Nomenclature of covalent and ionic compounds?

Nonpolymer that can stick to wax when dissolved in water?

Not good with math or chemistry. Help with moles please.?

Nuclear decay?

Nucleation?

Nucleophilic Medium Reagents?

Nucleophilicity of Water?

Nucleus contains protons if so..they are positively charged so the atom must have disintegrated and burst out?

Nylon, polyester, and most other plastics are carbon compounds...true or flase?

O3 is heavier than air, then also, it is at the top of all layers. why??

O3(g) + NO(g) > NO2(g) + O2(g). Delta H = -199kJ and delta S = -4.1J/k, calculate delta G at 25C.?

OCHEM HOMEWORK! What is an equation for the reaction of tertiary-butyl alcohol with the lucas reagent?

Of the following household chemicals, which ones would be soluble, or insoluble?

Oh boy, how do you balance this equation?

Oil and food dye?

Ok guys, this is a tough one- what are the positive effects of ionizing radiation?

OK I have one more question on writing a balanced equation?

Ok my last Sodium acetate question?

Ok on an assignment I have to tell how something is a strong or weak base/acid?

Ok so colour is affected by light...why are there different colours for the same materials then?

Ok so I have a Chemistry make up exam tomorrowso..?

Ok, perhaps a more challenging Chemistry question... this one has stumped me for 4 days now.?

On a bottle of HCl at the job I just started it says 1.0N. What does the N stand for?

On a piece of Gold Jewellery what does CL&S in the hallmark mean please?

On mythbusters what was the silver explosives they used to make the pants explode?

On rare occasions, oxidation numbers do not have to be whole numbers. Determine the oxidation number for ..?

On the backbone of a polypeptide chain what is the functional group called with the double bonded oxygen?

On the basis of solubility, how will you distinguish benzyl amine from benzyl alcohol?

On the basis of solubility, how will you distinguish ethanal from hydroxyethanal?

One german technical sentence...?

One liter of a certain gas at STP weighs 2.7 grams. What is the molar mass of the gas?

One of the reactions that occurs in a blast furnace (where iron core is converted into cast iron) is that iron

Online Chemical Reactions?

Online chemistry guide?

Orbital notation, electron configuration, and lewis dot structure for Calcium, Arsenic, Fluoride(f1-), and Mg2

Order each of the following sets of five ions according to increasing size.?

Order of Reaction?

Organic chem acids prob?

Organic chem help!?

Organic chem prob please help!?

Organic Chem prob, please help!?

Organic chem prob?

Organic chem prob?

Organic chem problem?

Organic Chem Questions?

Organic Chem Stuff?

Organic Chemistry Catching Up?

Organic chemistry prob?

Organic chemistry problem?

Organic Chemistry! What are the equations for the reaction of 2,4 dinitrophenylhydrazine with.?

Organic Chemistry!?

Organic chemistry?

Organic chemistry? Writing reactions with Bromine and hydrocrabons?

Organic Chemistry-drawing structures?

Organic chemsitry question?

Organic compounds are always highly water soluble and flammable? True or false.?

Organic help!!?

Organic reaction?

Other than united nuclear, where can I get some Nichrome wire?

Outrage as Churchill dropped from England's history syllabus?

Oxalic acid (H2C2O4) reacts with the oxidizing agent KMnO4 according to the following reaction:?

Oxidation numbers?

Oxidation Reduction Reaction! HELP PLZ!!?

Oxidation/Reduction Question?

Paper chromatography question?

Partial Pressure Question!! HELP!?

Peanut butter?

Pectin from apples is fiber and paper is made from fibers... does it mean i can make paper from apples?

Percent Ca as CaO?

Percent yield weird problem?

Percentage of??

Percentage question?

Perflourobenzene?

Perform the following conversions?

Periodic Table anyone.......?

Periodic table challenge?

Periodic Table?

PET plastic what is industial name for?

PH of NaOH in 2.0L?

PH of solution?

PH question!?

Phenol + Calciumhydroxide?

Phenol, C6H5OH is a weak organic acid:?

Photoelectric Effect?

Physical and chemical changes.?

Physical and Chemical changes?

Physical Chemistry!!!!?

Physical chemistry?

Physical chemistry?

Physical or chemical change?

Physical or chemical change?

Physical or Chemical change?

Plastic is made using crude oil can plant oils be used instead?

Please , it is an emergency please help i need help?

PLeASE ANSWER ThiS?

Please balance the redox equation in basic solution:Fe(OH)2 + O2 --- Fe(OH)3(s)?

Please calculate the equivalent weight if SO2 in the following reactions:?

Please calculate the f2 value for given dissolution profile?

Please can i get a detailed and comprehensive report on how Bentonite is processed for use in the oil industry

Please classify the following substances into compounds or mixtures?

Please explain the cathode ray tubes experiment by JJ hompson in which he discovered electrons. Please help me

Please explain the process leading to the breakdown of coconut milk emulsion and separation of oil from water?

Please explain what is equivalence and equivalent weight and how to find it out.Please please help me.?

Please explain what the vetting procedure is?

Please give me 5 uses of bleaching powder please fast if you are not able to give than suggest me a site?

Please give me a basic difinition for acids and bases?

Please give me examples for these reactions:?