Chemistry Questions and Answers

  • I need ideas for class 12 chemistry projects?
  • I need info about phosphorus, how to add it in oil painting, how to prepare balmain's paint w/o any hazard
  • I need interesting facts on silver?
  • I need majr help with gas law problems....?
  • I need serious organic chemistry help! How do you do the mechanism for an alpha chloroester to an epoxide?
  • I need some chem help?
  • I need some chemistry help?
  • I need some examples of household cleaning products with enzymes in them. Everything I have looked at does not
  • I need some help answering questions about a chemical equation(my head about to explode)?
  • I need some help finding some information on the chemical butyric acid. Help me, please?
  • I need some help in chemistry?
  • I need some help on how to write balance chemical reactions for my chemistry class.?
  • I need some help with Chemistry/Molarity homework.?
  • I need some help with molarity.?
  • I need some help with these if anyone can help me please??
  • I need some information about "Filter Cloth".?
  • I need some information about making crystal (ice,shisheh)narcotics smok ,rather by persian note (text)or site
  • I need some points in how to go about my chemistry lab.?
  • I need the answer for this question: Calculate the energy of one mole of photons with a wavelength of 632 nm?
  • I need the way to prepare NiO and ZnO?
  • I Need These Cobalt Answers! And Only These Ones! i cant find them! Help! PEASE!?
  • I need this for a band show. What chemical burns at a low temperature to simulate fire?
  • I need to balance,indicate what type of reaction it is and indicate any precipitats formed.?
  • I need to calculate the percent composition of silver sulfate (Ag2SO4) pleeese help?
  • I need to choose three different foods and report the price, unit price, and ingredients?
  • I need to devise a method to make pure potassium dichromate and ideas?
  • I need to draw a complete expanded structure of the alkane whose name is 1-chloro-2,3-dimethylpentane?
  • I need to draw the structure of 1-bromo-3-ethycyclopentane.?
  • I need to find a nonpolar compound around the house, but have no idea.?
  • I need to find the [cu2+] in a voltaic cell equation. I am given the Eocell, and the Ecell, what do i do?
  • I need to find the atomic weight of lead using an electrochemical process. Anything would be helpful.?
  • I need to get 58.0 grams of salt for use in chemistry.?
  • I need to know how to write this chemical equation?
  • I need to make a 1% rosolic acid solution in 0.2 N NaOH, can anyone help me with the calculations?
  • I need to make a program consisting of name of element followed by %abundance?
  • I need to show the five different compounds- an ether, a ketone, and three alkenes for...?
  • I need with with Hess's Law. I don't understand how to use it, please help me?
  • I need your help? for my presentation could you?? about atmospheric pollution?
  • I reacted Mg with HCl and calculated the percent yield of H2 gas (See details)?
  • I really don't understand how to write a chemical equation. Could you give me steps to these problems?
  • I really need help for chem!!!!?
  • I really need help on this!!?
  • I really need help with my chemistry crossword puzzle.?
  • I really need help with these chemistry questions that involve math ( thank you so much!) :)?
  • I really need help with this stoich problem please :*(?
  • I really need the chemical equations for these please!!!!?
  • I really really need to know the 4 signs of a chemical reaction for science?
  • I refine gold by mence of aquregiaiuse white liquid toseperategold tell me the chemicalname of the liquid?
  • I refine gold by mence of aquregiaiuse white liquid toseperategold tell me the chemicalname of the liquid?
  • I refine gold by mence of aquregiaiuse white liquid toseperategold tell me the chemicalname of the liquid?
  • I tried this one and got 326, but my guess is I am way off!?
  • I want a buffer solution wiht a pH of 4. I can do this by using a solution containing wich of the following?
  • I want get the full procedure of production of road marking material & the details of quality controle tests?
  • I want to ask about zwitter ion?
  • I want to know about biotechnology is it mostly deals with chemistry or little bit?
  • I want to know about lycra and its chemical construction?
  • I want to know the technical or scientific side of what water is? it is toxic at the same time it is healing.?
  • I want to make glass at home, is it difficult?
  • I was givne some questions to answer in chemistry class and i have the right answers HOWEVER?
  • I was wandering if anyone can answer my question about saltpeter??
  • I wonder why iron rust ?
  • I would appreciate any help, im nt sure about the answer..!!??
  • I would like to find the co. that makes plastic hoses for home oxygen use.?
  • I would like to know how did gold get its name and symbol. Thanks.?
  • I would like to know how to calculate or determine biomass concentration by spectrophotometric analysis?
  • I would like to know how to calculate or determine biomass concentration by spectrophotometric analysis?
  • Ice liquefies at 0掳C. Is liquefaction an exothermic/endothermic? At which range temperature is it spontaneous?
  • Ideal gas and molar mass?
  • Ideal gas and Real gas?
  • Ideal gas experiment?
  • Ideal gas experiment?
  • Ideal Gas Law help please??? PLease can you help?
  • Ideal gas law question:?
  • Ideal gas law?
  • Ideal Gas Law?
  • Ideal gas question?
  • Ideal gases and partial pressure?
  • Ideal gases and partial pressures?
  • Ideas about CHEMISTRY PROJECT involving a bit of research??
  • Ideas for a title on a brochure about solids, liquids, gases?
  • Identify an unknown substance?
  • Identify and explain several factors that might account for differences b/w the observed and accepted values?
  • Identify element X?
  • Identify test for bromoethane?
  • Identify the conjugate acid- base pairs in the reaction:?
  • Identify the ion and give the IUPAC name 26protons and 23 electrons?
  • Identify the ion and IUPAC name when it contains 94protons and 90 electrons?
  • Identify the main group to which X belongs in each ionic compound formula.?
  • Identify the solute and solvent when sugar and water is mixed to form nectar for hummingbird feed?
  • Identify the types of intermolecular forces in each?
  • Identify whether the following are more likely to act as nucleophile or electrophile: H20, NH3, H2CO, H2C=CH2
  • Identify which element is more reactice: lithium or barium? EXPLAIN PLEASE!!!?
  • Identify??
  • Identifying aldehyde, ketone, carboxylic acid, and ester.?
  • Identifying Bonds?
  • Identifying Common Inorganic Substances...?
  • If X radiation ionizes 29.8 脳 1016 atoms per cemtimeter cubed, what is the ionizing intensity of the?
  • If [H30+]=1.7x10^-3M, what is the pOH of the solution?
  • If 0.500 Moles of Na combines with 0.500 moles of Cl to form NaCl, How many formula units of Nacl are present?
  • If 1 M NH3 were added to some solid CuCO3 in a test tube containing 1 M Na2CO3, what would happen? Why?
  • If 1.2 grams of sodium metal react with 5 mL of water, how many grams of NaOH will be produced?
  • If 105.0 grams of zinc metal reacts with HCl to produce hydrogen and zinc chloride, how many moles of..?
  • If 12 moles of Al(suscript2)O(subscript3) are produced, how many moes of auminum reacted?
  • If 13.45g of Copper (II) chloride react, what is the maximum amount of precipitate that could be formed?
  • If 150g of Fe2O3 reacts completely with 53g of CO determine the limiting reactant. How much Fe should be produ
  • If 167 grams of Mgl2 are dissolved to make up 3.25 liters of solution, what is the molarity?
  • If 2.30 L of helium at 21.0 掳C is allowed to expand to 6.60 L, with the pressure remaining the same, what is t
  • If 20 g of potassium hydroxide are dissolved in 5 L of water what is the pH?
  • If 25.0 grams of chromium (III) oxide are decomposed to form 13.3 grams of chromium metal, how many grams...?
  • If 25.0 grams of water with a temperature of 82潞C is added to 15.0 g of water at 0潞C, what is the final temp潞
  • If 25mL of water are added to 200mL of a 1.5M solution, what will be the new concentration?
  • If 275 grams of water at 30'C is heated to 50.0'C, by how much does the kinetic energy of the water molecules
  • If 3.01 x 10 ^23 molecules of heptane are consumed, how many molecules of water are produced?
  • If 3.20 kcal of heat is added to 1.00 kg of ice at 0 degrees cel, how much water at 0 degrees cel is...?
  • If 4.1g of Cr is heated with 9.3g of Cl2, what mass CrCl3 will be produced?
  • If 4.5 x 10^-3 moles of MgF2 form a saturated 1 L aqueous solution then whats Ksp for MgF2 at this temperature
  • If 5.00 mol of sodium react with 75.0 mol of chlorine gas according to the unbalanced equation,?
  • If 756 grams of KClO4 are dissolved in 650 grams of what, what is the freezing point of the solution?
  • If 77.6 mL of an AgNO3 solution reacts with enough Cu to produce 0.252 g Ag by single displacement, ...?
  • If 77.6 mL of an AgNO3 solution reacts with enough Cu to produce 0.252 g Ag by single displacement, ...?
  • If 77.6 mL of an AgNO3 solution reacts with enough Cu to produce 0.252 g Ag by single displacement...?
  • If a atom has no electric charge, what;s number of protons & electrons it has?
  • If a candle is burnt under a jar until it goes out, what gases are left?
  • If a car produces 47 g CO2, how many grams of O2 are used up in the reaction?
  • If a chemical process is spontaneous and endothermic, will 螖G<0 and 螖S>0?
  • If a Chemist starts with 110.0 grams of CS2 and an excess of O2,?
  • If a compound contains 49.98% Ag 24.09% Cr 25.94% O what is emperical formula?
  • If a crystal is dropped into solution and a it dissolves readily, the solution was?
  • If a lead concentration contains 58% Pbs, what is the percentage of Pb in the concentrate.?
  • If a match was struck in a room filled completely with Methane gas , what will happen ?
  • If a mixture of 35.8 g CH鈧刟nd 75.5 g S reacts, how many grams of H鈧係 are produced?
  • If a sample of gas (2.9g) has a volume of 752mL at 1505tor and 62.0 degrees celcius, the gas will be?
  • If a solution contains both Iron (II) and Iron (III) how might you determine the concentration of each species
  • If a solution has [H+] = 4.1 x 10-9, then what is the pOH of this solution?
  • If a solution is buffered at a pH of 8.3, then the addition of a small amount of acid will cause the solution?
  • If a solution like NaCl mixed with 5 drops of NaOH caused little or no change in the pH, WHY?
  • If a substance contracts when it freezes does its density increase,decrease or stay the same?
  • If a substance has only identical atoms, what is that substance?
  • If a warm bottle of soda and a cold bottle of soda are opened, which will effervesce more and why?
  • If an atom has 3 energy levels, with 10 electrons in its outer level, what is it an atom of?
  • If an element has electrons (-) bound tightly to their atoms & conducts hardly any electricity it can be used?
  • If an element has half-life of 1450 yrs, how long will it be before there will be 1/16 of it still remaining?
  • If an ion has 55 Protons and 54 Electrons, what element am I referring to and what is its charge?
  • If at equilibrium, the forward and reverse reaction both continue and their rates are both equal?
  • If atoms cant get destroyed, then isn't splitting Uranium is destroying it? If so then how come?
  • If attractive forcer among solid particles are less than the attractive forces...?
  • If bromoethane is heated under reflux with aqueous sodium hydroxide it undergoes hydrolysis.?
  • If chlorophyll molecule holds the magnesium atom in broccoli, what molecule holds the calcium atom in broccoli
  • If density of methanol is 0.793 kg/L , what is its volume needed for making 2.5L of its 0.25 M soln.?
  • If electrodes are connected when the beaker is filled with distilled water, will electric current flow?
  • If equal volumes of .10 M NH3(aq) and .10 M NH4Cl(aq) are mixed, is the resulting solution acidic, basic, ntr?
  • If every engine in existence converted to salt water fuel today how much would our sea level decrease by 2moro
  • If f(x) = x(x + 3) (x - 1), use interval notation to give all values of x where f (x) > 0?
  • If f(x)= x(x+3)(x-1), use interval notation to give all values of x where f(x)>0?
  • If f(x)=x(x+1)(x+4), use interval notation to give all values of x where f(x)>0.?
  • If hair is considered as organic, can it be used as a fertilizer?
  • If Hydrogen (H) is flammable, and oxygen (O) enhances burning; why isn't Water (H2O) flammable?
  • If I add 1 liter of alcohol to 1 liter of water I get less than 2 liters. The proper name of this effect is??
  • If I add a pH neutral substance to something with a pH 5, will the acidic substance be made more alkaline?
  • If I burned hatred would it's enthalpy of combustion be higher than that of love?
  • If i have 5 moles of amino acid hydrocloride, how do i find its molecular mass?
  • If I need a 60% alcohol solution in a 500ml container?
  • If I want to make a 2 molar solution of CaCl2 in 3 Liters, how many grams of Calcium should I add?
  • If i'm about to neutralize tea, using a weak basic, then what is the weak acid in the tea?
  • If it's in equilibrium, what change will cause more NH3 to form in this equation: N2(g) + 3H2(g) 2NH3(g)?
  • If ketchup is considered a liquid, why?
  • If my swimming pool is too acidic, what chemical substance can I use to neutralize the pH level?
  • If Np-238 has a half-life of 2 days, what quantity of a .48g sample would remain after 10 days?
  • If one body is postively charged and another body is negatively charged, free electrons tend to?
  • If oxalic acid is a poison, why is it possible to eat rhubarb and spinach?
  • If oxyen has a high affinity to haemoglobin, is there anything that carbon dioxide has a high affinity for?
  • If pH of a solution is 9, what is the concentration of hydroxide ion?
  • If plants can absorb carbon from the atmosphere and covert it, is it so difficult for man to do the same?
  • If potassium dissappeared from the Earth, how would you resolve that problem?
  • If pressure on 500ml of gas is doubled, the new volumen is.. and why?
  • If reaction shifts to the right, will the concentration of reactants increase, decrease, or stay the same?
  • If silver phosphate were to be produced during the experiment, what would be the formula of the silver phospha
  • If small globules of one liquid remain suspended in another for some time, such a mixture is called a(n) _____
  • If sodium bicarbonate reacts to acids, can you tell which fruits are more acidics by using it??
  • If something is water soluble, does this mean it is lipid insoluble and vice versa?
  • If such a compound or molecule as Carbon Tertroxide existed, would it be more lethal than Uuq?
  • If te black sand you ran across has a specific heat of 700 J/(kg*C).?
  • If the hydroxide ion concentration is 1x10 -12 M, what is the pH of the solution?
  • If the levels of mercury are the same in both sides of a u-tube, what must be true of the gas in the manometer
  • If the molarity of a solution of H2SO4 is 2.5M, what is the molarity?
  • If the normality of a solution of Ba(OH)2 is 4.0, what is the molarity?
  • If the nucleus of an atom contains 15 protons, the atom contains. . . ??
  • If the percent yield is found to be 91.10 %, how many grams of SO3 are actually produced ?
  • If the percent yield is found to be 96.00 %,how many grams of H2O are actually produced?
  • If the ph is .45 how do u get the pOH, the OH- and the H+?
  • If the temperature of a fixed amount of gas is decreased at constant pressure its volume will...?
  • If the temperature or pressure is not constant are statement a and b correct?
  • If the wavelength of a n=4 to n=1 transition equals 6.72 x 10^20 nm what region of the spectrum would occur?
  • If there is a separation, with a sharp line of demarcation, between two liquids that have been mixed, they are
  • If there is calcium carbonate (hard white-colored substance) along the insides of the pool, what caused this?
  • If there is oxygen in the frmula of water, why cant we breathe underwater?
  • If there is oxygen use going on in one room and candle burning in the other,(small apt) how dangerous is this?
  • If there's a given 150 mL of .200 M CuCl2 and 0.20 g of Al metal, how many grams of Cu can be synthesized?
  • If two compounds in a solution react to form a salt, the reactants were probably-?
  • If u can answer this?


  • 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]