Chemistry Questions and Answers

  • Yet another chemistry question?
  • You are given 1 molar of a chemical compound how would you go about identifying it?
  • You are given 1 molar of a chemical compound how would you go about identifying it?
  • You can speed up the dissolving of sugar (solute) in tea (water solvent) by?
  • You discover a new element that has 400 protons and 401 neutrons, you predict.?
  • You Dissolve 10 g of C2H6O in enough water to make o.100 L, calculate the Molarity?
  • You find the mass of a piece of iron metal, let it rust, and measure the mass again. The mass has increased.?
  • You have a mixture consisting of salt and iron fillings. How might you separate them?
  • You mis 0.20 mole each in a 1.5 L container. 2NOBr(g)---- 2NO (g) +Br2(g) kC=2.0 AT 100 DEGREES CELSIUS?
  • You mix 60.0mL of 1.0 M silver nitrate with 25.0mL of 0.80 sodium chloride. what mass of silver nitrate formed
  • You need to prepare 2.00L of .100M Na2CO3 solution. the best procedure is to weigh out what ?
  • You place 2.82 g of sodium carbonate in a 250 ml flask and fill it to the mark with water.?
  • Yr 10 chemistry - is this correct?
  • Yuck! Leftover meat...?
  • Zeitscrift journal for physical chemistry?
  • Zn + S -----> ZnS If 25g of zinc and 30g of sulfur are mixed, which chemical is the limiting reactant?
  • ZnSO4 + Al (s) AlSO4 + Zn (s) is this equation wrong?
  • # 2 science ppl?
  • #3 science ppl?
  • " polymeric structures "..?/?
  • "Heavy Water" Heat Transfer. 10 points for best attempt.?
  • (1)Analytical precision and accuracy are two scientific terms to express the quality of analyses.?
  • (i)If 92gramsof Na contain x atoms,how manygrams of Mg contain the same number of atoms?
  • * Chemistry *What are the answers for these questions?
  • **SImple Chemistry Question**?
  • . A 0.015M soln of hydrogen cyanale, HOCN, has a pH of 2.67. Calculate?
  • ...can you give me an idea on what am i going to conduct on my thesis?? note: it must be experimental?
  • .190 g of a gas occupies 250 ml at STP. WHat is its molar mass? WHat gas is it?
  • .Identify the correct units for specific heat capacity?
  • : Alter the chemical properties of a given solution thereby giving a complete spectrum of primary colours (aka
  • ? about mercury...?
  • ???????
  • ??Chemistry Question??
  • @7000 ft. above sea level, at what temperature will H2O boil?
  • [ALL ABOUT MOLARITY!!] what is the molarity of 5.00 g Mn(NO3)22 H2O in 181 mL of solution?
  • [H] concentration?
  • [HELP WITH PHYSICAL CHEMISTRY] phase diagram questions HELPPPP?
  • [MOLARITY!!] what's the molarity of 0.77 g MgCl2 in 600 mL of solution?
  • _______ is another word for a positive ion?
  • _______ is another word for a positive ion?
  • ____________ is the most common solvent.?
  • ________means having two nuclei from different parents.?
  • _______is also known as laughing gas?
  • _____C2H6(g) + _____O2(g) ---> _____H2O(g) + _____CO2(g) - pleasee help me know how to balance equations?
  • _____Fe + _____H2SO4 ---> _____Fe2(SO4)3 + _____H2 Please help meeeee balance this?
  • _____MgCO3(s) ---> _____MgO(s) + _____CO2(g) Helppp me balance this pleasee?
  • ____is also known as laughing gas? please tell if u r sure and also give sourse?
  • __HCL+ __Ca(OH)subscript2---->__ _________+ __ _______?
  • 0.22 iron to silica ratio?
  • 0.25g zinc & 10mL 6M HCl react. How many moles zinc reacted & how many moles H was produced.?
  • 0.2688g of a monoprotic acid neutralizes 16.4 mL of 0.08133 M KOH. The molar mass of the acid is ___g/mol.?
  • 0.9% sodium chloride how do you make it?
  • 0.9% Sodium Chloride?
  • 0ne mole of salt (58.0 grams), and I need to convert into tablespoon/teaspoons, but do not know how.?
  • 1 Diffusion and Effusion Question?
  • 1 Mol of gas has a volume of 22.4L, how many L of NH3 will be formed from 2.0L of N2?
  • 1% Solution?
  • 1) At what pH will FeS begin to precipitate if the Fe2+ ion concentration is 0.1M and the H2S conentration is?
  • 1,3-butanol exhibits stereoisomerism, draw appropriate structural formulae of each isomer.?
  • 1. What fundamental law is demonstrated in balancing equations?
  • 1. State under what conditions of delta H and delta S, a reaction is product-favored at all temperatures.?
  • 1. what acid can i use to dissolve aluminum?
  • 1. What must be true about any two atoms of the same element?
  • 1.48g of calcium carbonate reacts with 2.0moldm-3 of HCl,calculate enthalpy change per mole of the CaCO3?
  • 1.How would you determine what the precipitate of a reaction was?
  • 1.How would you prepare stock solution of 1000 mg Cuso4?
  • 1.what is solution of elergy?
  • 1: When chemists speak of speeds, one of the quantities that is almost always included is:?
  • 1:2 Reaction help?
  • 10.0 mL of 0.100 M acetic acid titrated with 0.100 M NaOH.what is the pH?
  • 10.00g of gaseous HCl are dissolved in water to give a final solution of 22.8mL ..?
  • 10=5e^x sjdksjdklasjlk?
  • 1000 gallons of H20 @ 80C mixed with 1000 gallons of D20 @ 40C?
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  • 11.54 mL of 0.1510 M NaOH was needed to neutralize 25.0 mL of an H2SO4 solution.?
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  • 1300 cm^2 = _________ M^2?
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  • 15 g OF LEAD @ 25 degrees C heated to 40.5J specific heat is .128 what is final temp?
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  • 175g of H2O was heated from 15C to 88C. How many Kcal were absorbed by the H2O?
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  • 1980 AP Chemistry Question?
  • 1982 AP Question?
  • 2 chem q's help please?!?
  • 2 LiOH + CO2 ---> Li2CO3 + H20 what mass ofcarbon dioxide can 1000g of lithium hydoxide absorb?
  • 2 Matter & Energy Questions.?
  • 2 moles of SO2 were initially present in flask. How many moles of SO3 must be formed in order to have a...?
  • 2 NaNO3 + BaCl2 ==> Ba(NO3)2 + 2 NaCl ???
  • 2 part Triphenylmethanol question.?
  • 2 pure water samplesheld in separate containers must have molecules possessing the same average kinetic energy
  • 2 ways to find the number of valence electons in an atom?
  • 2)-with increasing quantum no.the energy difference between adjacent orbits hydrogen atom?
  • 2. Isooctane has the molecular formula C8H18. What is the empirical formula?
  • 2. If 26.23 mL of potassium permanganate solution is required to titrate 1.041 g of ferrous ammonium sulfate?
  • 2. Use the van der Waals equation to calculate:?
  • 2.00 g of hydrogen gas and 91.2 g of oxygen are placed in a 100L container. These gases react to form H20 gas
  • 2.50 grams of XeF4 is introduced into an evacuated 3.00 liter container at 80.0 degress celcius. Find the pres
  • 2.50g of Cu reacts with O, the Copper Oxide product has a mass of 2.81g. The simplest formula of copper oxide?
  • 2.The standard enthalpy of formation of Zn(2+)(aq) is -153.9kJ/mol. How much heat is evolved when 0.3724g of
  • 200g of a metal at 140 degrees is dumped inot h20 and liberates 4.5x10 to 4th calories.?
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  • 20mcg is equivalent to how many milligrams?
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  • 24.0g of nitrogen gas react with an excess of hydrogen has to give an actual yield of 3.85g NH3.?
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  • 25mL sample ammonium nitrate solution produces 186M solution when diluted w/ 50mL H2O wats solutions molarity?
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  • 27.60 g of N2 and 9.5 g of h@ are present as reactants. Only 29.5 g of NH3 are produced. Wut is percent yield
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  • 2Al + 3Br2 --> Al2Br6?
  • 2C6H12O6 -> C12H22O11 + H2O, How many moles of sucrose would be produced if 90g of each reactant are used?
  • 2h2O ---------> 2h2+O2?
  • 2NaOH(aq) + H2SO4(aq) Na2SO4(aq) + 2H2O?
  • 2NO+02 2NO2 how many molecules of O2 are needed to make 3.76*10^22 molecules NO2?
  • 2NO+O2 2NO2 how many molecules of O2 are needed to make 3.76^22 molecules NO2?
  • 2so2 + o2 = 2so3?
  • 3 Chemistry Solution Questions!?
  • 3 Gas Law Problems? (will give best answer)?
  • 3 main gas laws? chemistry?
  • 3 Questions on balanced equations?
  • 3 Solution Questions Help!?!?
  • 3,3-dimethylbutan-2-ol + conc. sulphuric acid gives what? How?
  • 3.0 dm^3 of sulfur dioxide is reacted with 2.0 dm^3 of oxygen according to the equation below:?
  • 30ml HF is titrated w/ 0.1M KOH. 55ml KOH needed to reach equivalence point whats the solutions concentration?
  • 32.63 mL of 0.100 M NaOH was required to titrate a 25.0 mL sample of the acid.?
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  • 3D Amino Acids?
  • 3Fe+4H2O---->Fe3O4+4H2?
  • 3Fe+4H2O----->Fe3O4+4H2?
  • 3Fe+8H ---->3Fe4O+8H?
  • 3X+4Y-->5Z...When 2.5 moles of X react with 1.8 moles of Y, 61 grams of Z are produced.?
  • 4.50 g of solid NaOH are dissolved in water to give a final solution of 28.8 mL?
  • 40l of a gas at STP are heated to 80C as the pressure is decreased to 75kPa. fine the new volume?
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  • 4kg of water has a volume of how many liters?
  • 4NH3(g) + 3O2(g) ==> 2N2(g) + 6H2O(g)?
  • 5 chemistry questions (all you have to do is answer A B C or D)?
  • 5 compounds formed through covalent bonding?
  • 5 Solution Problems?
  • 5 structures for C7H14? I'm new at this chemistry thing! help?
  • 5% solution of NaCIO?
  • 5.50 g of gaseous HCl are dissolved in water to give a final solution of 24.6 mL .?
  • 5.50 g of gaseous HCl are dissolved in water to give a final solution of 24.6 mL .?
  • 50.0mL of 1.00M Hcl and 2.0 g of NaOH. What is limiting reagant.?
  • 50ml 0.0500 M nitric acid, HNO3(aq)?
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  • 6.50 g of solid NaOH are dissolved in water to give a final solution of 25.0 mL .?
  • 6.Why should the standarized NaOH solution be kept in a stoppered bottle? Why use a rubber stopper?
  • 600.0mL of air is at 20.0 Celsius. What is the volume (in mL) at 60.0 Celsius?
  • 608mm Hg is held in a container with the volume of 545 cm3. The volume of the container is increased to 1065?
  • 64.00 g of O2 are completely reacted with an excess of the other reactant.?
  • 64.0gm of SO2 contains how many moles of Oxygen?
  • 7 Solution Questions!?
  • 7.00g 0f BaCl2 was added to 5.25g of K2SO4. After drying 6.85g of BaSO4 was obtained.Theoretical yield BaSO4?
  • 7.50 g of gaseous HCl are dissolved in water to give a final solution of 26.2 mL .?
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  • 8 mL of H2O in moles?
  • 8.5 g sample of NH3 on oxidation produces 4.5 g of NO. Calculate the percent yield?
  • 8.5 g. sample of NH3 on oxidation produces 4.5 g. of NO. calculate the percent yield.?
  • 8g of sulfur burns in atmospheric oxygen to make sulfur dioxide. How many moles of sulfur are consumed?
  • 90.5 gram sample of metal gold has a heat capacity of 10.5 joules/celcius. what is the spec. heat of gold?
  • 92.1 grams of ethanol and 162 grams of water...what is the mol fraction?
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  • 9g of aluminum metal is added to an excess of hydrochloric acid. the volume of hydrogen gas produced at stp is
  • A 15.60-mL sample of aqueous sodium hydroxide is titrated to the stoichiometric point with 18.00 mL?
  • A 16.00-mL sample of aqueous potasium hydroxide is titrated to the stoichiometric point with?
  • A 17.60-mL sample of aqueous potasium hydroxide is titrated to the stoichiometric point ...?
  • A 17.80-mL sample of aqueous sodium hydroxide is titrated to the stoichiometric point with 20.20 mL?
  • A diver is able to cut through water.Give reason?
  • A .052 solution of benzoic acid, C6H5COOH, Ka=6.3x10-5, is titrated with a strong base. What is the (H+) of?
  • A .1M solution of which of these salts will have a pH less than 7?
  • A .1M solution of which salt is the most acidic?
  • A .20-molar solution of acetic acid, HC2H3O2, at a temperature of 25 degrees Celcius,has a pH of 2.73?


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