Chemistry Questions and Answers

  • Identify a household substance in which an ice cube will sink.?
  • Identify the lewis acid and lewis base?
  • Identify the major species (excluding water H2O) present in an aqueous solution of NH4CH3COO.?
  • Identify the true statement(s) about sulfur? sulfur's atomic radius is smaller than oxygen's atomic radius,
  • Identify wheather exothermic or endothermic?
  • If 12.0 grams of aluminum reacts with HCl according to the reaction below, how many liters...?
  • If 12.0grams of aluminum reacts with HCL accorinding to the reaction below how many liters of hydrogen gas...?
  • If 15 percent of a number is 0.3 what is 45 percent of N?
  • If 15.0 g ethyl alcohol (CH3CH2OH) are dissolved in 500 g water, find the molality of the solution?
  • If 15.0 g ethyl alcohol (CH3CH2OH) are dissolved in 500 g water, what is the molality of the solution?
  • If 15.0g ethyl (CH3CH2OH) are dissolved in 500g water,find the molality of the solution???
  • If 16g of aluminum oxide were produced, what is the percent yield of the reaction below?
  • If 16g of methane is allowed to react with 32g of oxygen what is the limiting reagent?
  • If 20.0 grams of KOH reacts with 15.0 grams (NH4)2SO4 according to the reaction below, calculate...?
  • If 20.0grams KOH reacts with 15.0grams(NH4)2So4 according to the reaction bewlow calculate the iters of NH3..?
  • If 4 is written in a specific color on a chemical bottle, what it is meant?
  • If 40.0 grams of H3PO4 reacts with 60.0 grams of MgCO3 according to this reaction...?
  • If 40.0grams of H3PO4 reacts with 60.0grams of MgCO3 according to this reaction, 2H3PO4+3MgCo3->Mg3(PO4)2+..
  • If 41.38 mL of a sulfuric acid solution reacts with 0.2888g of..?
  • If 56.98 g of iron filings reacted with an exces amount of copper (I) sulphate, how many moles of solid formed
  • If 6 M of H2SO4 is substituted for 6 M HCl will more or less drops of 6 M H2SO4 be required for .....
  • If 8.87 g of As2O3 is used in the reaction and 5.33 g of As is produced, what is the percent yield?
  • If a bottle of amonium hydroxide and hydrogen peroxide are opened,does the strength diminish with each use?
  • If a cell potential is positive for a galvanic cell, what does that mean?
  • If a product contains sodium hydrogen carbonate, how could i test it for the presence of sodium bicarbonate?
  • If a relative in 1863 was a zinc manufacturer, what did he produce?
  • If a soft drink is cooled down, what happens?
  • If a solution is 6% vinegar by volume. That means it is 6 parts vinegar to 100 parts water. Right?
  • If a substance forms intramolecular hydrogen bonding, the effect on the ability to form ...?
  • If a substance is a strong elctrolyte, is it necessarily a strong acid?
  • If a substance oxidizes another, does it take electrons from the other?
  • If a yellow precipitate was obtained with AgNo3, could you conclude that only Br or I is present in d mixture?
  • If Ag atoms occupy corners of a cube in a lattice and Cu occupies the centers, what's the simplest formula?
  • If all the atoms of an element are identical in various respects then how can two hydrogen atoms combine?
  • If an acid has an H+ concentration of 1.0 times 10-4, what is the ph?
  • If an acid has an H+ concentration of 1.0 times 10-4, whats the pOH?
  • If an acid is added to the water, the pH will?
  • If atmospheric pressure ona certain day is 749 mm Hg, what is the partical pressure of Nitrogen?
  • If CH4 gas and C4H8 gas are released simultaneously at the left and right ends respectively of 50cm long ..
  • If fatty acid A has more double bonds than fatty acid B, which will have the lower boiling temperature?
  • If fire is the rapid oxidation of a substance, does that mean that ash is a form of rust?
  • If have 85% phosphoric acid (by weight), and mix 10mL of it with 75mL of water, what is your new concentration
  • If I filled a balloon with a ton of carbon dioxide, would it crush me?
  • If i had a test tube ofpure oxygen, is there anything cooli could do with it.?
  • If i had some hydrogen in a test tube, is there anything cool i could dowith it?
  • If I have a substance that is 70% pure, and want to mix it so it is 50%...?
  • If i put chlorine to get rid of alga in science experiment does it change the conductivity of water with NaCl?
  • If I ran hydrogen peroxide through a still, would I be separating the hydrogen away the oxygen.?
  • If i use phenolftalein what shoul i explain...?
  • If I were to add aluminium sulfate solution to barium chloride solution, what would the precipitate be?
  • If ph of a solution is 7.4 so what is the hydrogen ion concentration of that solution?
  • If purified Acetylsalicylic acid is not completely dry before the final weighing, how does this ..?
  • If silver has a specific heat of about 0.06 cal/g c, how many calories will it take to raise the temperature?
  • If sodium fluoride is a poison,- (used in rodenticided) Why is it put into drinking water?
  • If solutions of NaCl and Pb(NO3)2 are mixed, how many precipitation reactions will there be?
  • If solutions of Ni(NO3)2 and KCl are mixed, how many precipitation reactions will occur?
  • If solutions of Ni(NO3)2 and KCl are mixed, how many precipitation reactions will occur?
  • If someone shots a nuclear central with a gun, what happens ? Does it explode ?
  • If the concentration of Mg in sea water is 1400mg/l what OH concentration is required to precipitate Mg(OH)2?
  • If the distilled water was not boiled?
  • If the fictional element G could react with sulfur to form an ionic compound with the formula GS2...?
  • If the heat of vaporization for water is 540 cal/g, how many kilocalories are released when 5.00 g of steam is
  • If the Ksp for PbI2 is 3.1 x 10-7, will precipitation of PbI2 occur when 10mL of 1.0 x 10-5M Pb(NO3)2 is?
  • If the mass of a proton, Mp, is 1800 times the mass of an electron, Me?
  • If the molecular weight is 146 amu. what is the molecular formula?
  • If the O2 produced is selaed in a 5.00L container at 35, 0deg C What's the pressure in the container in atmosp
  • If the O2 produced is selaed in a 5.00L container at 35, 0deg C What's the pressure in the container in atmosp
  • If they oppisite of large is small and the oppisite of small is large. What is the oppisite of medium?
  • If two balloons have the same amount of atoms. Does that mean they have the same volume?
  • If u set salt alite will it burn?
  • If u want to become a pharmaceutical should u take biochemistry or inorganic chemistry ?
  • If u were going to multiply hydrochloric acid with chlorine how much leg strength is needed for baseball?
  • If we are adding phenol to water what will happen?
  • If we have only 4.0x 10 (to the 24th) molecules of HNO3, how many grams of NO2 will be produced?
  • If we remove the malai (upper layer of boiled milk) what will hapens?
  • If you are working a problem that asks you to find the solubility of Cr(OH)3 in water and you assign variables
  • If you are working a problem that asks you to find the solubility of Cr(OH)3 in water and you assign...?
  • If you dissolve 14.08g of copper chloride in enough water to make 266 mL of solution, the concentration of the
  • If you dissolve 9.07g of NaOH in enough water to make 236.0 mL of solution, what can you expect the pH of the?
  • If you go to college, wanting to major Chemistry?
  • If you had the chance to travel to outerspace would u enter a black hole?
  • If you had the means, would you strap helium ballons to your lawn chair and float away?
  • If you have 1 mole of Cl2O, how many atoms of chlorine are there?
  • If you have 2 unknown solutions and put them in a testtube and the precipitate is white...?
  • If you have 25mL of 1.5M KCL, how many moles of KCL do we have?
  • If you increase water vapor why does the partial pressure of other atmospheric gases decreases?
  • If you light Play-Doh on fire will it explode?
  • If you mix helium with water in a container, will it make the water less dense?
  • If you remove 2 electrons from an atom, what would be the new charge?
  • If you think you're a chem genius try answer this?
  • If you use 623 g of water, what mass (in g) of ethylene glycol should you use?
  • If you were asked to find the temperature using the ideal gas law, what would the formula be?
  • If you were provided with the density of a gas and asked to find the molecular weight...?
  • If your barometer reads 750.25 mm of Hg. what is the atm. pressure in kPa?
  • I'm a girl... Chemistry? It's really about chemistry.?
  • I'm asking about Carboxylic acid and its Derivatives. We were ask to research in advance prior to our expt.
  • I'm going to start my organic chemistry class in a few weeks. Suggestions:_?
  • I'm have 0.1 M hydrochloric acid, 0.1 M acetic acid, 0.1 M sodium hydroxide, and 0.1 M aqueous ammonia...
  • I'm looking for a weak alkali that would not hydrolyse an ester. Could anyone help me with this?
  • I'm not too sure where to start on this one. I am still confused with the half life concept a little.?
  • I'm placing the question below?
  • I'm trying to convert base pairs to kDa, in other words, what is the weight of 100 bp in kilodaltons?
  • Im writing a chemistry paper on "The water we drink". Any suggestions on where to begin??
  • Importance of predicting the yeild in the identification,minining & extraction of commercail ore deposits?
  • Impregnating desiccant with cobalt chloride?
  • In 2H2+O2--->2H2O, what is the number of molecules of oxygen needed to form 0.8mol of water?
  • In a batch reactor, ozone oxides water for treatment. The system takes at 25ºC and 1 atm.?
  • In a Bond Energy problem, does the diatomic oxygen have a single bond or double?
  • In a certain chemical reaction 1.00 gram of product is produced in 15 minutes when the reaction is carried o?
  • In a condensed structural formula, each carbon atom is.?
  • In a CSTR, why does the reaction rate increase as the flow rate of the reactants increase?
  • In a home pool when the PH is far too high,would it be (PH minus) that you would add?
  • In a home pool when the PH is far too high,would it be (PH minus) that you would add?
  • In a living cell,equilibrium is never attained.Explain this phenomenon.?
  • In a living cell,equilibrium is never attained.Explain this phenomenon?
  • In a particular chemical reaction 2 bonds are broken and no bonds are formed. Based only on this information..
  • In a reaction 4 mole of electrons were transferred to 1 mole of HNO3.the reactant is??
  • In a solution, is the solvent a solid, liquid, a gas? or a combo of them?
  • In a swimming pool, what makes the water hard?
  • In a voltaic cell with electrodes made from zinc and copper, the zinc is being dissolved into solution...?
  • In a zinc/magnesium battery, the electrolytes could be?
  • In acid base titration 25.62 mL of an NaOH solution are needed to neutralize 26.23mL of a 0.1036 HCl solution?
  • In an alkaline battery, three sides of the casing are made of which metal?
  • In an aqueous solution the [H+] is 1.0 x 10^-5 M. What is the [OH-]?
  • In an aqueous solution the [H+] is 1.0 ´ 10-5 M. What is the [OH-]?
  • In an energy diagram for a chemical reaction what species appears at the highest energy?
  • In an energy diagram for an endothermic chemical reaction which of the following is true?
  • In an energy diagram for an exothermic chemical reaction which of the following is true?
  • In an energy diagram for an exothermic chemical reaction which of the following is true?
  • In Ba(H2PO2)2 molecule what is oxidation number & oxidation state? how we will find it?
  • In chemistry is mercury a metal or a liquid?
  • In chemistry, what does PH represent?
  • In chemistry, what is the difference between chemical properties and physical properties?
  • In electrolysis where the reaction start first, at anode or at cathode?
  • In glycolysis follwed by either lactic acid or alcoholic fermentation produce___?
  • In Hindi Kala Namak & Sendha Namak what are the chemical word?
  • In molecular terms, describe how emulsifiers are able to mix polar and non-polar sunstances together.?
  • In organic chemistry what does PP stands for?
  • In Organic Chemistry what does/is DBr?
  • In physical chemistry why does the boiling point increase with pressure?
  • In Pickle preparation what is the purpose of adding Oil?
  • In relation to gas mixers, what is the difference between a gas mixer and a gas blender?
  • In relation to the natural resource rubber, what are its sources, uses, and problems associated with its use??
  • In solar panels what does doping the silicon crystals mean (with boron)?
  • In synthesis of an alkyl halide, why is an excess of concentrated Hydrochloric acid necessary?
  • In synthesis of an alkyl halide?
  • In terms of enthalpy, how would this reaction proceed (2)H20 (l) + electrical energy --> (2) H2 (g) + O2 (g)
  • In the chemical formula of hydrogen peroxide( H2O2) why does both the 2 does not get canceled?
  • In the distillation process, what is the importance of continuous flow of water in the condenser?
  • In the equilibrium constant expression for C3H8(g) + 5O2(g) = 3CO2(g) + 4H2O(g)...?
  • In the experiment S2O8-2 + 2 I- ->2 SO4 -2 + I2, what is the reducing and oxidizing agents?which species is
  • In the following reaction, how many liters of NO gas are produced if 20.5 liters of N2 gas are...?
  • In the following reaction, which way should the equilibrium shift when hcl is added? why?
  • In the haber process, it is true the higher the pressure , the more favourable the foward reaction is?
  • In the peroxide molecule, H2O2, the oxygen has an oxidation number of?
  • In the polymerization of caprolactone to PCL, tin octanoate is usu used. Does it have adv over alkoxide ?
  • In the reaction below, what is the correct coefficient for sodium chloride?
  • In the virtral chemlab assigment, Oxidation-Reduction Titrations, Determination of Iron, what was the color..?
  • In thermodynamics and Heat Capicitance why does q = delta H when pressure is constant?
  • In Tie Dying how can you distinguish a homogeneous mixture from a homogeneous mixture?
  • In titrating a H3PO4 solution, it was found that 43.68 mL of 0.1215 M NaOH would neutralize completely...?
  • In using Markovnikov's rule, the hydrogen in HCl adds to the carbon in the double bond:?
  • In water, a substance that ionizes completely in solution is called a?
  • In what countries can you find gold, nickel, carbon, and uranium?
  • In what particular reading of thermometer where in Celsius and Fahrenheit are numerically equal?
  • In which direction would the following equilibrium run. If the volume of the container were increased?
  • In which of the following forms does graphite conduct electricity?...solid, liquid, gas, aqueous?
  • In writing the equilibrium constant expression we use square brackets. The notation [A] means ...?
  • In writing the equilibrium constant expression we use square brackets. The notation [A] means which of the flw
  • Increase acetic acid content of vinegar by evaporation?
  • Indicate the major differences?
  • Inexistence of glass transition temperature ?
  • Info needed on what happens when daimonds are heated at high temperature?
  • Information/ background on Ionic Bonds? Info/background on salts?
  • Ingestion of a scalp application?
  • Initial partial pressure SO3 .500atm at 1000k. At equilibrium SO3 pressure is .200 atm at 1000k. Kp at 1000k?
  • Instrument used 2 draw a writen record of changing air pressure is called A.mercury B. barograph C. altimeter?
  • Intermolecular forces?
  • Investigatory project in chemistry?
  • Ionization energy- please help?
  • Ionways water purification process?
  • Ir, nmr, mr help..?
  • Iron (obtained from its ore by smelting)?
  • Is 7 the only neutral pH substance?
  • Is a burnt magnesium ribbon still a metal?
  • Is a Copper (II) Ion mean it is Cu2+ or Cu2-? or neither?
  • Is a hydroxyl ion called hydroxide when in a compound?
  • Is a thiol group an ortho/para director on a benzene ring?
  • Is acetic acid vitamin c? What is its chemical symbol?
  • Is alcohol an alkali or acid?
  • Is alluminum a mixture or pure substance?
  • Is antifreeze an electrolyte or a nonelectrolyte?
  • Is antimatter capable of destroying the world, if so, how much would it take?
  • IS ANYONE ELSE MELTING WITH THIS HEAT? I can't sleep, so here I am. Does the heat bother anyone else?
  • Is Baking Powder or Baking Soda the substitute for Baby Powder?
  • Is biochem and physical chem double major a wise choice for someone who wants to become a chemical engineer?
  • Is bleach a pure substance or is it a mixture?
  • Is blood a pure substance or mixture?
  • Is boiling water entropically favored?
  • Is Br2 a stronger oxidizing agent than l2?


  • Page [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] [25] [26] [27] [28] [29] [30] [31] [32] [33] [34] [35] [36] [37] [38] [39] [40] [41] [42] [43] [44] [45] [46] [47] [48] [49] [50] [51] [52] [53] [54] [55] [56] [57] [58] [59] [60] [61] [62] [63] [64] [65] [66] [67] [68] [69] [70] [71] [72] [73] [74] [75] [76] [77] [78] [79] [80] [81] [82] [83] [84] [85] [86] [87] [88] [89] [90] [91] [92] [93] [94] [95] [96] [97] [98] [99] [100] [101] [102] [103] [104] [105] [106] [107] [108] [109] [110] [111] [112] [113] [114] [115] [116] [117] [118] [119] [120] [121] [122] [123] [124] [125] [126] [127] [128] [129] [130] [131] [132] [133] [134] [135] [136] [137] [138] [139] [140] [141] [142] [143] [144] [145] [146] [147] [148] [149] [150] [151] [152] [153] [154] [155] [156] [157] [158] [159] [160] [161] [162] [163] [164] [165] [166] [167] [168] [169]