# Chemistry Questions and Answers

Calculate the number of moles of:?
Calculate the partial pressure in mmHg of the four main gases in the air: N2, O2, Ar, CO2. Their relative abu
Calculate the percent ionization of nitrous acid in a solution that is 0.222 M in nitrous acid and 0.278 M ...
Calculate the percent yield (%)?
Calculate the percent yield?
Calculate the percentage of water of hydration?
Calculate the pH of 0.10 M KNO2 (aq). Ka for HNO2 is 4.3 x 10 ^ -4?
Calculate the pH of a solution containing 0.818M acetic acid, Ka=1.76x10^(-5) and .172M sodium acetate.?
Calculate the pH of a 0.32M solution made from a weak acid with pKa of 4.245??
Calculate the pH of a 0.63 M NH4Cl solution. For NH3, Kb = 1.8 x 10^ -5?
Calculate the pH of a buffer solution prepared by dissolving 21.46 g of benzoic acid ( HC7H5O2) and 37.68 g of
Calculate the pH of a solution 0.818M acetic acid, Ka=1.76x10^(-5) and 0.172M sodium acetate.?
Calculate the ph of a solution of 10.0 ml of .22M KOH after dilution to 250 ml?
Calculate the pH of a solution that is .60M HF and 1.00M KF?
Calculate the pH of each of the following solutions.(Kb= 1.1e-8).?
Calculate the pH of the buffer?
Calculate the pH of the solution before and after the addition of NaOH.?
Calculate the pH ofa 0.0001M solution of the strong acid, HCI?
Calculate the pH?
Calculate the quantity of heat required to raise the temperature of one gallon of water ( 3.78liters) from?
Calculate the solubility (in moles per liter) of Fe(OH)3 (Ksp = 4 10-38) in each of the following.?
Calculate the solubility in moles/liter of Cu(OH)2 at 25C?
Calculate the solubility of Fe(OH)3?
Calculate the standard cell potential (electromotive force) in volts?
Calculate the standard free energy change in kJ/mol?
Calculate the standard free energy change in kJ/mol?
Calculate the value of the equilibrium constant, Keq , for the following reaction at 298 Kelvin.?
Calculate the value of the equilibrium constant, Keq , for the following reaction at 298 Kelvin.?
Calculate the value of the equilibrium constant, Keq , for the following reaction at 298 Kelvin.?
Calculate the value of the equilibrium constant, Keq , for the following reaction at 298 Kelvin.?
Calculate the value of the equilibrium constant, Keq?
Calculate the value of the equilibrium constant, Keq , for the following reaction at 298 Kelvin.?
Calculate the value of the equilibrium constant, Keq , for the following reaction at 298 Kelvin.?
Calculate the volume of KCl, for lab?
Calculate the wavelength of an electron travelling at 5.11 107 ms-1.?
Calculate the wavelength of the spectral line produced in the hydrogen spectrum?
Calculate the wavelength, in nanometers ...?
Calculate the weight of iron which will be converted into its oxide by the action of 18 grn of steam?
Calculate(show process)a)molality b)molarity c)mole frac. of KI if dnsity of 20%(mass/mass)aq. KI is1.202g/mL
Calculating concentrations of constituent ions in CaCl2 solution?
Calculating Delta H for a reaction?
Calculating Delta H?
Calculating free energy with standard cell potential?
Calculating grams, moles in the reaction?
Calculating Ka for a weak acid when ph and molality are known.?
Calculating Keq using 螖G?
Calculating Kp and Kc?
Calculating Kp and Kc?
Calculating mass of silver nitrate..?
Calculating molar Solubility of a saturated solution?
Calculating number of CO2 molecules and weight during reaction?
Calculating partial pressures between NO and O2?
Calculating pH of a solution?
Calculating pH.?
Calculating pH?
Calculating pKb.?
Calculating the # of calories of heat energy?
Calculating the [OH-] using the pOH?
Calculating the final temperature?
Calculating the initial concentration of a weak acid?
Calculating the Kb value of an unknown base?
Calculating the mass of silver produced from the reaction of 6.35 g of copper according to the reaction:?
Calculating vapor pressure?
Calculating Work Done On A System(Wsystem).?
Calculation?
Calculation?
Calculations problem...help!!!...mayday?
Calculations with a chemical reaction. help me balance sodium carbonate solution and calcium chloride solution
Calling all chemistry geniuses.?
Calorimetry Done?
Calorimetry...?
Camphor value?
Can 2 solid phases co-exist at equilibrium?
Can a Casio fx-7400G Plus calculator solve matrices?
Can a diluted solution be saturated? Yes, but explain?
Can a electromagnet float using the meissner effect?
Can a pistol blow up a car?
Can a solution with undissolved solute be supersaturated?
Can an chemical reaction involve more than one activated complex? Explain.?
Can an insoluble ionic compound be electrolytic?
Can any O-Chemistry buffs tell me if you can hydrogenate the double bond in one of the rings of cholesterol?
Can any one explain dilution and concentration of liquids, or a good site to find info on thank-you.?
Can Any one explain me Otto Hahn's Experiment using Uranium?
Can any one help with chemistry?
Can any one tell me hoe to draw 75 isomers of decane?
Can any one tell me if glass detoriates in high / low pH?
Can any radioactive isotope fission?
Can any tell me how to do this chemistry problem?
Can any1 help me balance this equation? Al(OH)3 + HNO3----------------------> H2 + KOH?
Can any1 plz help me with this fluorine question!!!???
Can anybody calculate this?
Can anybody help me? Please?
Can anybody help with Chemical Equilibium?
Can anybody provide me with a simple method on how to test for cations and anions?
Can anybody recommend a good way of cleaning volumetric flasks?
Can anybody tell me if all types of honey crystalize , and why it happens?
Can anybody think of a slogan for the element fluorine?
Can anyone answer any of these questions?
Can anyone answer/?
Can anyone balance these chemical equations??
Can anyone balance these equations?
Can anyone check this answer on soubility?
Can anyone design a simple experiment to create global warming???
Can anyone draw the following structure(s) :Propyl Cyclohexane, 1-ethyl-3-methyl benzene, Butyl Cyclohexane?
Can anyone explain to me about atoms, electrons, protons and neutrons .... as well as ions???
Can anyone get this practice chemistry ?n?
Can anyone give an example of the use of UV spectroscopy to monitor a biochemical process?
Can anyone give me list of NABL approved labs in INDIA.?
Can anyone give me more information about this lab experiment?
Can anyone help me make up a slogan for the element Lead?
Can anyone help me solve a chemistry problem involving Ksp..?
Can anyone help me w/ chemistry!!!?
Can anyone help me with chemistry?Dot and cross diagrams and shapes of molecules?
Can anyone help me with the birth of elements?
Can anyone help me with these please?
Can anyone help me with this buffer question and finding its pH??
Can anyone help me with this Chemistry question?
Can anyone help me with this equation?
Can anyone help me with this please? i did it before but they were wrong?
Can anyone help me with this qn? Molecular shapes of ICl5?
Can anyone help me with this qn? Molecular shapes of ICl5?
Can anyone help with a lab write up. production of hydrogen by replacement?
Can anyone help!please?
Can anyone make up a clever slogan for the element~Boron?
Can anyone please name some mild alkalies, and please no formulas, but with general names?
Can anyone please solve the Stoichiometry question with work?
Can anyone please teach me how to balance the following chemical equation?
Can anyone solve these Stoichiometry problem with work?
Can anyone solve these Stoichiometry problem with work?
Can anyone solve these Stoichiometry questions with work?
Can anyone solve these Stoichiometry questions with work?
Can anyone solve these Stoichiometry questions with work?
Can anyone solve this chemistry problem?
Can anyone solve this molarity problem?
Can anyone suggest a good reference source about buffer systems for controlling the pH of cosmetic formulae?
Can anyone suggest a quick easy way to make biodiesal?
Can anyone teach me how to solve a chemistry problem?
Can anyone tell me about the chemistry behind epoxy bond?
Can anyone tell me all the orbit of electrons?
Can anyone tell me and show me proof of the word "nothing" please give me a reasonable explanation for nothing
Can anyone tell me the best way to calculate the euilibrium constant please?
Can anyone tell me what is meant by 20-volume of hydrogen peroxide?
Can anyone tell me what types of reactions these are?
Can anyone tell me why does a charge have a field around it? In simple terms please.?
Can anyone write the balanced chemical equation for the dissociation of Cu(OH)2 (s) in aqueous solution?
Can aqueous calcium chloride conduct electricity when dissolved in a solution.Please post a reliable source.?
Can barium sulphate be used in the body?
Can CH3F, CH2Cl2, or XeCl2F2 have isomers?
Can chloral hydrate be made at home?
Can chromatography be used to test if sugar crystals are pure?
Can clouds catch fire?
Can Cr displace H+. Explain your answer?
Can earthworms especially Eisenia fetida survive in EDTA?
Can heavy fuel oil be refined into kerosene?
Can HNO3 be made by electrolysis of KNO3 solution?
Can Human hair be used as a fertilizer?
Can hydrogen peroxide be evaporated and used to enhance combustion?
Can hydroxyapatite be combined together with fluoroapatite & chloroapatite in its molecule?
Can hydroxyapatite be degraded naturally?
Can hydroxyapatite be used to make artificial teeth?
Can i buy pure ephedrine in europe?
Can I cut salt from any food?
Can i have some help with this equation?
Can i knew some examples of second order reaction in chemical industry?
Can i shoot this all over you...?
Can I use a petri dish to find bacteria in a soda?
Can i use pepsi instead od diet coke for the mentos and diet coke rocket??
Can iron be turned into gold by means of a nuclear reaction?
Can Lead really be turned into gold?--No really.!?
Can ne one answer!?
Can Ozone be replenished artificially?
Can Ph=0??
Can plants live without Carbon Dioxide?
Can Rock Candy Melt In Liquid Or Water?
Can salt peter be made at home with simple supplies?
Can silver and limestone be in the same place?
Can Sodium metal be produced from molten NaOH.?
Can some help me, explain chemical mechanism for detecting indole use kovacs in bacteria culture?
Can some one do my chemisty home work for me?
Can some1 plz help me calculate the volume in cm^3 of the conc reagant: 10 M HCL to make 200 cm^3 0.4 M HCL?
Can some1 plz help?
Can somebody help me with a Chemistry question?
Can somebody help me with some Chemistry questions?
Can somebody help me write an equation?
Can somebody list all the chemical elements that are poisonous?
Can somebody list down the usage of hydroxyapatite in medical purposes? Thanks!?
Can somebody please write me an introduction 4 the element copper???
Can somebody pls explain to me the step by step process of problem solving with dimensional analysis chemistry
Can somebody tell me a good website about chemistry to help me further understand it? Please and thank you!!!!
Can someone answer this Chemistry Question about Neutralization?
Can someone answer this question or give me a website about this question.?
Can someone balance this equation for me? NH4OH + H2SO4 ---> (NH4)2SO4 + H2O?
Can someone calculate these for me?
Can someone calculate this for me i dont have a scientific calculator?
Can someone direct me to the 1994 Advanced Placement Chemistry Multiple Choice Answers?
Can someone explain hydrolysis in an understandable format?
Can someone explain oxidation and emulsion?
Can someone explain oxidation reduction to me in simple terms? Have test tonite so I need answers ASAP! Thanks
Can someone explain salt hydrolysis to me?
Can someone explain this hybrid orbital chem problem?