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?