Chemistry Questions and Answers

  • How to maintain the temperature of water in a pressure-cooker between 131° and 140°F for 45 minutes?
  • how to make a 100 ml solution of 5ppm sulfate and 5 ppm chloride ions?
  • How to make a Co2 bomb?
  • How To Make A Dishwashing Liquid?
  • How to make a good smokebomb?
  • how to make a hydrogen bomb?
  • how to make a mentos coke rocket?
  • how to make adhesives for ceramic?
  • how to make condoms?
  • How to make distilled water from common things in the house?
  • How to make ethanol at home and industrially?
  • how to make gold?
  • How to make homemade rocket fuel?!?
  • how to make hydro bromic acid and zink sulfet?
  • How To make NaNO3 or KNO3?
  • how to make paraffin/wax emulsion?
  • how to make perfume?
  • how to make perfume?
  • how to make plastic toys?
  • how to make pottasium permangnet?
  • how to make soap?
  • how to make sulphonic acid?
  • how to make water pistols?
  • how to makea spitting fountain from vinegar and baking soda?
  • how to manufacture pvc solvent cement?
  • how to manufacture vinyl chloride monomer economically ?
  • how to measure the effectiveness of an ammonium fertiliser?
  • How to predict whether primary, secondary, and tertiary alcohol uner goes halogenation?
  • How to prepare 3wt % solution of H2SO4 in 1 liter?
  • how to prepare acetate buffer pH 5.0?
  • how to prepare benzene from ethene? full details please.?
  • how to prepare DI oxey DI mithi benzene?
  • How to prepare propanal from propanol?
  • how to prevent oxidation in lipid based foods?
  • How to prevent Salt (NaCl) from rusting steel?
  • How to produce Brown's gas?
  • how to purify a compound in a pharmaceutical industry?
  • how to purify water?
  • how to purify water?
  • How to reduce Carbon Dioxide from the air? Please give me and opinion because I am having a research on that..
  • How to reduce heat loss?
  • how to remove an r group from a ketone?
  • How to rise the pH value in DM water to reach the ph 6.5 to 7?
  • How to safely buffer an ammonium dichromate solution?
  • How to separate a mixture of ammonium chloride and calcium carbonate?
  • How to separate hydrogen gas from pure hydrogen chloride?
  • How to set up a buffer solution?
  • how to silver solder with propane torch?
  • How to solve molality problem?
  • How TO Stablize Red Phosphorus?
  • How to test gold?
  • How to use a Dissolved OXygen Meter (DO meter)?
  • How to use Covalent Bonds in Lewis Dot Notation?
  • How to Work?
  • How to write a balanced equation?
  • How to write an acid-base reaction?
  • How to write an equation of titration of Iodine, I2 and sodium thiosulfate, Na2S2O3?
  • How to write net ionic equations?
  • How to yield (Z)-2-phenyl-2-butene?
  • How to you write a balanced molecular equation, with phases, between the KHP and the titrant, NaOH?
  • how toxic are the fumes from muriatic acid or hydrochloric acid?
  • How toxic is Bleach?
  • How we can identify the difference between the Pvdf and PE coating in Aluminium colour coating?
  • how we can purification Ag,Cu and Sn from alloy from Ag,Cu and Sn ?
  • how we can separation of alloy from three metals of Ag,Cu,Zn?
  • How whould these be writen from increasing number of neutrons and decresing number of electrons.?
  • how will a precipitate form when the following solution is mixed?
  • How will a precipitate form when the following solution is mixed?
  • how will i separate a mixture of salt, sand and water?
  • How will loss of solven affect the freezing point determination of the solution?
  • How will over-diluting the Lycopene sample and adding it to column chromatography affect the separation?
  • How will we make plastic when oil runs out ?
  • How will you find out the Equalent weight of any Acid&Base?
  • how will you know if 2 elements/substances(like sulfuric acid and sugar) will react as a chemical reaction?
  • how would 10-30 mg look to the eye?
  • How would a higher concentration of NO affect the equilibrium?
  • How would a increase in temperature affect the equilibrium?
  • How would I calculate the number of protons and electros present in each of the following ions?
  • How would I calculate the percent ionization of 0.085 M lactic acid when ka= 1.4 x 10^-4?
  • How would i determine the name and formula of the binary ionic compound that has the following characteristics
  • how would I evaluate a spectrophotometer's sensitivity (not detection limit)?
  • how would i find the bond length of BrCl if a had the bond lengths of a few other molecules?
  • how would i got about doing these problems. i dont understand?
  • How would I write an essay about the Black Widow Spider?
  • How would the Rf value differ in normal phase TLC if the mobile phase contained more of a nonpolar hydrocarbon
  • how would this be balanced FeCl3 + KSCN?
  • how would u calculate the final temperature?
  • How would you balance the equation below? (the #'s shown in the equation belong in the bottom of the element)
  • How would you balance the equation below? (the #'s shown in the equation belong in the bottom of the element)
  • How would you calculate the standard entropy change (J/mol-K) here?
  • how would you classify hydrogen? why?
  • how would you describe potassium iodide as a powder?
  • How would you do this?
  • How would you finish this equation?
  • How would you follow the course of the following reactions?
  • How would you go about making a standard solution of NaHCO3?
  • How would you prepare a solution of NaOH of 0.100M?
  • How would you separate:...?
  • How would you test for the presence of small amounts of albumin in urine if you had a solution of nitric acid?
  • How would you test what primary bonding is present in an unknown substance?
  • How would you write the equation for the state of dynamic equilibrium of a liquid and it's vapor?
  • How would you..?
  • HOW ? can make pouring glycerin from crude glyserin?how many ways have for it?may u tell me please.thanks bye
  • hplc principle?
  • Huge lab in chemistry I need help on...?
  • Humidity is a measure of the amount of water vapor in the atmosphere. Why is humidity always very low in your
  • hw to find a coordination number ( plsssss help)?
  • Hybrdization?
  • Hybrid Orbitals?
  • Hybridized orbitals?
  • Hydrated and Anhydrated Formula's--Need HELP NOW!(please)?
  • Hydrocarbon chains?
  • Hydrocarbons are groupoed into series according to what?
  • hydrochloric acid dissolves to form a green solution of copper(II) chloride and hydrogen gas?
  • hydrochloric acid reacs with aqueous magnesium hydroxide?
  • hydrogen and oxygen form what kind of bond?
  • Hydrogen and Oxygen under pressure, will they turn to water, if so what is the safe pressure point?
  • Hydrogen atoms exisit in three forms - what is the difference between them?
  • Hydrogen Bonding?
  • Hydrogen bonding??
  • Hydrogen Chloride HCl?
  • Hydrogen gas is an unlimited source of energy?
  • Hydrogen mixed with air?
  • Hydrogen peroxide decompose to oxygen....?
  • Hydrogen peroxide question...?
  • Hydrogen Peroxide:?
  • hydrogen production?
  • Hydrogen sulphide is a gas at room temperature whereas water is a liquid. Suggest an explanation for this?
  • Hydrous sample heated to constant weight; minimum mass?
  • hygroscopic and deliquescent salts?
  • hygroscopic and deliquescent salts?
  • hypothesis for egg sucked into a bottle?
  • I am a little bit confused about this question ...please help...?
  • I am desperately needing help with my yr 9 chemistry homework, please help me.?
  • i am doing a reasearch paper on the chemical reaction b/w sodium and water as well as other reactions with Na?
  • I am having trouble with my homework question for chemistry class please help?
  • I am looking for a printable Periodic Table of Elements that includes the PEL ring quantitys.?
  • I am looking for photon sources available for the production of electron spectra of atoms and molecules?
  • I am not sure what I'm supposed to do in this question.?
  • I am starting to dislike chemistry. Please help me!1?
  • I ask about recovery of AgNO3 from exhausted liquid?
  • i ask about the (4-Chlorophenoxyacetic Acid (4CPA)) how can i prepare it and where it use?
  • I can't find any article about Curantyl.?
  • I can't find Ethyl Ether in any stores, why?
  • i cant find out the answer to the number of shells in a carbon atom and how many electrons in a shell?
  • I cAnt solve this please help meee?
  • I can't understand anything about Organic Chemistry and Biochemistry?
  • I did an experiment involving volume and temp. If the pressure wasnt constant how would my results be affected
  • I don't get this Titration part. Is there any formula to solve this?
  • i dont know which coefficents to use.. from the reactant or product side?
  • I don't understand >.<?
  • i dont understand this, do you?
  • I don't understand why when I put Sn into Cu(NO3)2 0.2M, one gas (H2) was given off.?
  • I don't want the answer, I want a chemistry explanation. Will someone give me one about this one problem?
  • i feel so stupid, but i have more wet cell/dry cell questions...?
  • i had a lab on preparation of cyclohexene from cyclohexanol?
  • I have 200mL sample, evaporated it to a small volume, then diluted to 100mL. How do i calculate concentration?
  • i have a chemical structure and i need to find the chemical formula?
  • I have a chemistry question on polarity?
  • I have a diary from an old uncle who fought in north africa during ww2?
  • I have a glass electrode what type of solution do i store it in?
  • i have a gold bar i think?
  • I have a lot of information but no idea how to do this problem!: Change In Entropy at 25 C??
  • I have a sample of BaCl2-2H20. If i heat it to constant mass.?
  • i have a test on electricity on fri. can someone clears some stuff up for me?
  • I have an important question regarding ions?
  • I have another balancing chemical equation can anyone help me?
  • I have Chemistry question i Can't figure out.?
  • I have made up a 1M solution of NaCl ( 58.5g of NaCl in 1000 L water) How do I make up 0.1 m solution?
  • I have some questions about a science lab I have to do for shcool.?
  • I have some questions about nickel - Copper Galvanic cell?
  • I have to do a science project on alternative fuels...help!?
  • I have to make a 3-D model of potassium what should it look like and any ideas how to make it?
  • I have to write an essay about how the periodic table is arranged and 5 trends about it What should i include?
  • I have trouble understanding moles and what they mean?
  • I heard that when you mix together bleach and something you will get poisonous gas. Can you explain?
  • i just need help on chemistry. for example dilution and molarity problems.?
  • I just want to ask what is the structural formula of salivary amylase. Thanks! :)?
  • I know a conjugate acid is from when a proton is transferred to the base- is it a base or acid though? explain
  • I know it's called freezing but...?
  • I know nothing !!!!!?
  • I know strong acids can dissolve hydroxyapatite (HA). Which other solvents beside of acids can dissolve HA?
  • I know that for denisty of liquid it's mass/volume but how do i calculate density of a box when mass is 180gm
  • I live in London Ontario, where can I buy litmus or ph strips besides a pool store?
  • I love you. Do you love me?
  • i need 20 interesting facts about iodine?
  • I need a advertising slogan and Who am I riddle for the element lithium.?
  • I need a chemistry project that is pretty easy but good?
  • I need a hypothesis for my science lab report about Density?
  • I need a little help! Atmospheric pressure at the top of Mt.Whitney in California is 440 mm Hg.?
  • I need a news article that relates to chemistry, help?
  • I need a quick chemistry answer!?
  • I need a science fair name. Im doing how diffrent salts change the boiling point of water?
  • i need a simile for the particles of a liquid... the particles of a liquid are like ...?
  • i need a strong acid that will eat aluminum?
  • I need an opinion? (ON ORGANIC CHEM)?
  • i need bablished my paper in corrosion chemistry?
  • I need balanced equations?
  • i need chem help please!!!!!!!!!!!!!!!!!!!!?
  • I Need Chemistry Help Please!?


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