Chemistry Questions and Answers

  • Dose chlorine kill sperm?
  • Double and triple bonds form because?
  • Double Repacement Reactions!?
  • Doubt in chemistry.?
  • Dr. Henry, thanx lots. Would it be possible for me to have your email address?
  • Draw a diagram ot three main ways by which small molecules can enter cells. as an aid in distinguishing the th
  • Draw structure?
  • Draw the electron dot diagram whcih shows Potassium forming a chemical bond with Bromine?
  • Draw the lewis-dot-structure for each of the following, (state the molecular shape of the molecule and the bon
  • Drawing branched alkanes?
  • Dry ice and color?
  • Dry ice and diamond?
  • During the process of dilution:?
  • During WWII, Nazi Germany developed "artificial fuel" for their war machine. Where is this technology now?
  • Dye-penetrant testing, detecting cracks in metals, non-destructive test material/DP test?
  • Dye-penetrant testing, detecting cracks in metals, non-destructive test material/DP test?
  • Dynamic mechanical analysis of low MW polymer?
  • Each of the following are soluble in water except...?
  • Each of the following are strong acids expect..?
  • Easy but not understood question of chemistry?
  • Easy question?
  • Either one of CH3CH2COOH CH3CH2CH2COOH to adsorb into the active carbon in the aqueous solution?
  • Electrical conductivity & dielectric constant question!!?
  • Electrochem, please help!?
  • Electrochemical cell -- potential ?? help?
  • Electrochemical Measurement of Concentration?
  • Electrochemistry - Balancing Redox Reactions?
  • Electrochemistry- using the Nernst Equation?
  • Electrochemistry?
  • Electrolisis (Bicarbonate of sodium )?
  • Electrolysis - Is there a solution to why no oxygen is produced at the anode?
  • Electrolysis Experiment Help! URGENT?
  • Electrolysis Experiment Help! URGENT?
  • Electrolysis Experiment?
  • Electrolysis Experiment?
  • Electrolysis of Water Molecules on a small scale?
  • Electrolysis of Water?
  • Electron Configuration Shorthand?
  • Electron Configuration Shorthand?
  • Electron Configurations...need correction to my solutions?
  • Electron spin?
  • Electron withdrawing groups determine acidity-- but how do you know which groups are electron withdrawing?
  • Electrons Question?
  • Element help?
  • Element that completes n=3?
  • Element X reacts with chlorine to form a compound with formula XCl2. The oxide of element X is basic. ...?
  • Elements and atoms?
  • Elements and compounds?
  • Elements in gas?
  • Empirical formula question?
  • Enthalpy change in reaction?
  • Enthalpy Changes + Calorimetry?
  • Enthalpy, Internal Energy and PV Work?
  • Entropy and Change of State?
  • Entropy Change of Physical Processes?
  • Enymes speed up chemical reactions by?
  • Enzyme lactoperoxidase?
  • Enzymes used in making detergents?
  • Equation & Types of Reactions?
  • Equation for a solution of a weak acid, HA, and its salt NaA...?
  • Equation for the reaction of 2-methylbut-2-ene with one molecule of HBr?
  • Equation of manufacture of titanium dioxide?
  • Equilibirum?
  • Equilibrium constant for the Reaction 2SO_2 + O_2 = 2SO_3?
  • Equilibrium Constant Question -Chemistry Second Year?
  • Equilibrium Problem - Help PLEASE!!?
  • Equilibrium state?
  • Estimate the freezing point of a liquor that is 45% by mass ethanol. (Ignore all other solutes.)?
  • Eswl .lipotripsy,ultrasound waves?
  • Ethane burns according to the following reaction:?
  • Ethane to Ethyne?
  • Ethylene Dibromide question?
  • Eucalyptus oil and tea tree oil almost identical? How much terpinen-4-ol does eucalyptus oil have?
  • EVA...how is ethyl vinyl acetate made and is the process environmentally friendly?
  • Evaluate Keq.?
  • Evaluate Keq.?
  • Evaluate the statement: "Chemistry can be considered the fundamental or central science."?
  • Ever wonder this?
  • EWhich of the following atoms has the smallest atomic radius? P, As, Sb, Bi, N?
  • Examples of solutions, suspensions and colloids?
  • Examples of substance that sublime?
  • Exothermic reactions of elements or organic compounds with oxygen are called.?
  • Experiment for effect of other metals on rusting?
  • Explain briefly Electrolysis of CuSO4?
  • Explain briefly the incomplete combustion of the gas?
  • Explain how greenhouse effect comes about?
  • Explain how water's ability to absorb heat is used to measure energy changes in chemical reactions?
  • Explain in molecular terms why the Haber synthesis:N2 + 3 H2 2 NH3 cannot proceed in a single-step.....
  • Explain the concept of orbitals?
  • Explain the different between substitution alloy and interstitial alloy?
  • Explain the following problem using a property of a liquid. Water rises in a straw when inserted in a glass?
  • Explain the following question using a property of liquids. Water beads on a waxed car?
  • Explain the following using a property of a liquid. A very light insect can walk on water without falling?
  • Explain the function of phenothalein?
  • Explain the function of potasium hexacyanoferrate(lll) solution?
  • Explain the fundamentals steps of the scientific method?
  • Explain the hydroxylation of glucose-6-phosphate?
  • Explain the importance of IR spectra in the structure determination of terpenes.?
  • Explain the reasons for equilibrium shift observed in step 1-4 in an experiment.?
  • Explain the working of a washing machime?
  • Explain this ???
  • Explain this observation, sodium is irradiated for 2 seconds with infrared light and no electrons are ejected.
  • Explain using electron structures the way in which the type of bonding present influences the chemical formula
  • Explain what happens when an antaacid (Maalox), which contains Al(OH)3, is consumed to relieve heartburn?
  • Explain why fluorence has a smaller atomic radius than with oxygen and chlorine?
  • Explain why hair conditioners contain surfactants which give the hair surface a waxy, shiny apperance?
  • Explain why no number is used in the names ethene & propene?
  • Explain why steam exhausting give rise to a higher vacuum in the can?
  • Explain why the melting point are different?
  • Explain why the name for MgCl2 is magnesium chloride but the name for CuCl2 is copper (II) chloride.?
  • Explain...gases are made up of very tiny particles called molecules...?
  • Explain.time is gold?
  • Explosive formula?
  • Exponential and logarithmic functions.. PLZ HELP?
  • Express .0025Amps into milliamps (mA)?
  • Extraction?.?
  • Extreme chem challenge!!. =p?
  • Faster reaction?
  • Fe(NO3)*9H2O + NaHCO3 i need balanced chemica equation and net ioni equation?
  • Fertilizer and M90s? magnify?
  • Fictional elements W,X,Y,Z have electronegativity values of 1.0,2.0,2.5,3.5,respectively which bond is least?
  • Find density of copper and with graduated cylinders and water?
  • Find molality, mole fraction and mass percent?
  • Find molar volume of an ideal gas?
  • Find molar volume of oxygen?
  • Find molar volume?
  • Find the compression factor?
  • Find the concentration...?
  • Find the critical constants of HCL?
  • Find the freezing point of a solution that contains 23.0 g ethylene glycol (C2H4(OH)2) disolved in 250 g of e?
  • Find the freezing point of a solution that contains 23.0 g ethylene glycol (C2H4(OH)2) dissolved in 250 g...?
  • Find the freezing point of a solution that contains 23.0g ethlene glycol(C2H4(OH)2) dissolved in 250g of ..?
  • Find the freezing point of a solution that contains 23.0g ethylene glycol(C2H4(OH)2) dissolved in 250 g of ..?
  • Find the mole fraction of the FeCl2 in the following soluiton 150g C6H23O 42.7g KO 320g FeCl2 50g H20?
  • Find the mole fraction of the FeCl2 in the following solution:?
  • Find the mole fraction of the FeCl2 in the following solution:150 g C6H23O 42.7 g KI 320 g FeCl2 50 g H2O?
  • Find the molecular weight of a gaseous compound if the density is 12.24 g/L,the pressure is 900 torr,and the..
  • Find the natural abundance pertance of Cu-65 ~ 64.928 and Cu-63 ~ 62.930 with a AMU of 63.540?
  • Find the new equilibrium pressure.?
  • Find the theoretical yield (g) of Fe2O3, produced by the rxn of 100.0 g of Fe and 50 g of O2. Actual = 134.08
  • Find the valve of x,y and z if x+y+z=6,x+2y+3z=14 and 3x+2y+z=10?
  • Find the vapor pressure of an aqueous (water as the solvent) solution in which the mole fraction of Hg...?
  • Find the weight of O2 necessary to fill a 100 L gas cylinder?
  • Find van der Waals constants?
  • Find viscosity.?
  • Finding liquid substances polar and nonpolar?
  • Finding products and balancing equations?
  • Finding products of an element that undergoes emission of alpha particle?
  • Finding the Ka of a weak acid?
  • Finding the mass of solute, moles of solute, molarity & molality of Oxygen in sea water?
  • Finger in my pop?
  • Firefly's electronic energy?
  • Fireworks?
  • Five beans have a mass of 2.1g. How manu beans are in 0.454kg of beans?
  • Flame Test for Hydrocarbons?
  • Flour Improvers?
  • Flow Scheme of Functional Group Tests -- I?
  • Flow Scheme of Functional Group Tests?
  • Flow Scheme of Functional Group Tests?
  • Food safe waterproof sealant, what should i use?
  • For a better understanding i'm placing question below?
  • For a reaction: aA + bB --> cC + dD How do i find the parts stated below in the details of this question?
  • For any chemistry/cooking whiz: I was heating water to make spaghetti. I added a spoonful of salt and then...?
  • For better understanding i placed the question below. maths?
  • For class 10 only?
  • For each bond tell whether it is nonpolar or polar. Also state the direction of the dipole. C-N, O-H, S-Br?
  • For each example,predict wether,and in which direction,the equilibrium is shifted by the change imposed?
  • For following reaction calculate the moles of indicated product produced when 2 moles of each reactant is used
  • For my lab it says to draw all resonance structures of particular molecules, what does that mean?
  • For neutralization reactions, where does the heat come from?
  • For redox reactions under acidic conditions; why don't you use HCl?
  • For the endothermic reaction N2O4(g) 2NO2(g) what is the effect of adding NO2 to the reaction vessel?
  • For the endothermic reaction N2O4(g) 2NO2(g) what is the effect of adding NO2 to the reaction vessel?
  • For the endothermic reaction N2O4(g) 2NO2(g) what is the effect of doubling the volume of the reaction vessel
  • For the endothermic reaction N2O4(g) 2NO2(g) what is the effect of doubling the volume of the reaction vessel
  • For the endothermic reaction N2O4(g) 2NO2(g) what is the effect of removing NO2 from the reaction vessel?
  • For the equilibrium equation: Ag2CO3(s) <-> 2 Ag+(aq) + CO32-(aq), what is the Kc and the Ksp.?
  • For the exothermic reaction 3H2(g) + N2(g) 2NH3(g) what is the effect of removing N2 from the reaction vessel
  • For the exothermic reaction 3H2(g) + N2(g) 2NH3(g) what is the effect of removing NH3 from the reaction vesse
  • For the exothermic reaction 3H2(g) + N2(g) 2NH3(g) what is?
  • For the exothermic reaction 3H2(g) + N2(g) 2NH3(g) which of the following changes could be carried?
  • For the following pair of substances, determine which has the larger molar entrop....?
  • For the neutralization of HNO3 with Mg(OH)2:?
  • For the reaction 2C ® A + B, 0.01 mole of A is formed during the first 15 seconds of the reaction. Assuming?
  • For the reaction 2H2(g) + O2(g) 2H2O(g) which of the following is the equilibrium constant expression?
  • For the reaction 2HBr(aq) + H2O2 (aq) yields Br2(l) +2H2O(l)...?
  • For the reaction 2NO2(g) ì N2O4(g) at 325 K equilibrium is established when [N2O4] = 0.020M and [NO2] =?
  • For the reaction A + B --> 2C which of the following statements is true?
  • For the reaction A + B ® 2C which of the following statements is true?
  • For the reaction CO + NO2 ---> CO2 + NO,?
  • For the reaction of H2SO4 + HBr what products would i get? thx =)?
  • For the synthesis for the equation calculate how many silver sulfide is produced from 45g of Ag 2Ag+S>>Ag2S
  • For those who teach chemistry?
  • For wat reaction does the half-life get longer as the initial concentration increases?& Y? Here's choices?
  • For which of the following acids would a 1.00 M solution have the lowest pH ( highest H+ concentration)?
  • For which of the following reactions is it important that the species collide with the correct orientation?
  • Forensic Science?
  • Formation of snow flakes--do you think it is a physical change or a chemical change?
  • Formic acid, HCOOH, is what causes the sting of bee stings. What is the formula weight of formic acid?
  • Formula unit equation?


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