Chemistry Questions and Answers

  • The nature of soltuions?
  • The nonmetals...?
  • The nuclear reactors, heavy water is used as a?
  • The number of covalent bonds each carbon atom has in organic compounds is usually?
  • The number of electrons inside a battery is always?
  • The number of electrons inside a battery is always?
  • The number of entities in one mole of that entity?
  • The number of Hydrogen atoms in 0.25 moles of H2SO4( Sulphuric acid ) is ?
  • The number of moles of NaHCO3?
  • The number of moles of oxygen needed to react with 4.0 moles of Mg is:?
  • The number of protons in an atom of carbon-12 is?
  • The number of stereoisomers obtained by bromination of trans-2-butene is?
  • The number of valence electrons in a bromate ion, BrO^-3 is ?
  • The oxygen released is used to form _____ .?
  • The pattern of enthalpy changes of combustion for sucessive members of an homologus seris?
  • The percentage of oxygen in H20 is?
  • The periods on the periodic table - numbering and what they are?
  • The pH of 0.1N H2O is?
  • The pH of a 3.00 M solution of a weak acid is 4.70 at 25 deg C. What is Ka for the weak acid?
  • The pH of a solution is 1.916 . Find [OH-]. silly question i know. i forgot.?
  • The pH of a solution is 4. How does the pH change, if the solution is diluted?
  • The pH of a solution is 5.00. Which of the following is TRUE about the solution?
  • The pH of a solution is 9.0. what is its h3o concentration?
  • The pH of human urine can range from a low pH= 5 to a high pH=8, WHICH urine solution is acidic and which is..
  • The pH of tomato juice is 4.3,indicating that tomato juice is?
  • The poisonans alcohol is?
  • The polarity/shape/arrangement of electrons of water:?
  • The prefixfor the multiple 10^18 is a)tera b)peta c)exa d)atto.Which is correct & why?
  • The pressure in an automobile tire is 1.81 atm at 27.0掳C?
  • The proces scientists use to perform research is referred to as the experimental group... TRUE orR FALSE? thnx
  • The process by which rust is formed?
  • The process of changing one element into another is called:?
  • The process of cracking..?
  • The purification of muddy by alum is done by?
  • The purification of muddy water by alum is done by?
  • The rate of effusion of a particular gas?
  • The reaction between an acid and a base always results in the formation of...?
  • The reaction CuSO4 + Zn------------ZnSo4 + Cu is an example of a __________ reaction?
  • The reaction of an alchol with carboxylic acid in the presence of H2SO is called?
  • The reaction of bromine with organic solvent acetone has a rate law which is zero order in Br2.?
  • The reaction that takes place when an acid is added to an acetate buffer (CH3COOH/CH3COO-) is?
  • The reduction potentials for the species involved in an electrochemical cell are as follows:?
  • The relative strengths of acids and bases in conjugate pairs?
  • The rule "like dissolves like" is used to predict...?
  • The science of organic chemistry has as its subject:?
  • The shape of butane-2 is?
  • The shape sulphur molecule is?
  • The smallest particleof an element that retains the chemical idenity of that element is?
  • The smokin fingers trick?
  • The solubility of a substance at a given temperature can be expressed as:?
  • The solubility of CO2 in water at 1.22 atm is 0.54 g/L What is the solubility of carbon dioxide at 1.86 atm?
  • The solubility of silver chloride, AgCl in water is 1.26e-05 mol/L. Calculate Ksp.?
  • The solubility of silver chromate, Ag2CrO4 in water is 0.022 x 10^0 g/L. Calculate Ksp.?
  • The solubility of silver sulfate in water is 0.236% (w/v) at 57掳C.?
  • The solubility product for Chromium (III) flouride is Ksp = 6.6x10^-11. What is the molar solubility of?
  • The specfic gravity of sulphuric acid at 35 degree c is 1.8243how to convert it to 20 degree celcius?
  • The specific heat of fusion of silver is 30.0 Calories per gram and the specific heat of silver is .030 Joules
  • The specific heat of fusion of silver is 30.0 Calories per gram and the specific heat of silver is .030 Joules
  • The stability of group XV pentaoxides decreases with increase in atomic mass then why N2O5 is least stable?
  • The stronger an acid is...?
  • The strongest intermolecular interaction between pentaneC5H12molecules arise from?
  • The strongest intermolecular interactions between hydrogen fluoride (HF) molecules arise from?
  • The structures that make up the cell are called?
  • The superior articular process articulates with what specific structures?
  • THE Ta atom has 73 protons and 108 neutrons. What is the atomic number of Ta?
  • The temperature of a 500. mL sample of gas increases from 150. K to 350. K. What is the final volume of the sa
  • The temperature of a gas is a measure of how hard its molecules hit the walls of its container? Is this true?
  • The tendency of a liquid that tends to minimize its surface area is called?
  • The term strong and weak, as applied to acids, refer to _________?
  • The titration of 25.00 ml a .125 M HClO4 solution required 27.07 ml of KOH to reach the end point. What is th
  • The titration of 25.00 ml a .125 mHClO4 solution required 27.07 ml of KOH to reach the end point.?
  • The titration of amino acid?
  • The total number of covalent bonds in a molecule of methane is?
  • The total number of possible different kinds of acid-base reactions is...?
  • The transformation of data into a form that is useful for a specific purpose is called?
  • The type of acid-base reaction that always goes to completion is the reaction between...?
  • The type of soil that holds water the bestwould be?
  • The unit for temperature that must be used in the ideal gas law equation is??
  • The unit Ksp for Ag3(PO4) is?
  • The value for the ion product constant for pure water at 25C is _______?
  • The vapor pressure of water at 20.0 C degrees is 17.5 mm Hg.?
  • The vapor pressure of water at 20.0C is 17.5mm Hg.?
  • The vapour pressure of a sucrose solution?
  • The vapour pressure of water at 293 K is 2.32 kPa. When 16.8 g of glucose (molar mass 180.15 g/mol) is dissolv
  • The volume of 1 mol of any gas at STP is...?
  • The volume of 6.00M HCL needed to make 319 mL od 6.80 M HCL is?
  • The water solution of which of the following substances is the best conductor of electricity?
  • The wavelength of the light?
  • The wavelength of the line in the Lyman series ..?
  • The Works toilet cleaner and tin foil bomb - dangerous?
  • Theoretical yield...?
  • Theoretical yield?
  • Theoretically what is the material with the highest tensile strength?
  • There are how many chemical equations in science?
  • There are how many chemical equations in science?
  • There are two nickel oxides . one has 21.42% O and the other has 29.02% O. Determine the empirical formulas.?
  • There is a black wild animal in my yard by the Tuscarawas River in Ohio. He is about twice the size of a squ?
  • There is a matrix X of order 7 9 ????
  • There is this series i have to remember. please suggest an easy way!?
  • Thermite reaction?
  • Thermo chemistry?
  • Thermo Chemistry?
  • Thermochemical equation?
  • Thermochemistry help please, urgent...?
  • Thermochemistry help!?
  • Thermochemistry Help?
  • Thermochemistry Problem (Simple for you, hard for me)?
  • Thermochemistry question, someone please help?
  • Thermochemistry question?
  • Thermochemistry, what is the equation for enthalpy, symbols and which symbol will always be constant or given?
  • Thermochemistry?
  • Thermochemistry?
  • Thermochemistry?
  • Thermochemistry?
  • Thermochemistry?
  • Thermochemistry?
  • Thermochemistry?
  • Thermodynamics help?
  • Thermodynamics?
  • Thermometer Bulb Condensate During Distillation Temperature Effect?
  • Thin Layer Chromatography question 1?
  • Things you should be interested in as a chemical engineer?
  • Think i should keep my organic chem textbook.?
  • This is a chemistry honors question: There are 3 specific questions I need help with.?
  • This is a two part question. Please help with answer and calculations.?
  • This is hard?
  • This is more of a math problem than chemistry problem..?
  • This is not for a grade just need some help!?
  • This is too complicated & I don't know where to begin can somebody help me with answers and calculations ?
  • This is wrecking my head!?
  • This one i cant figure out some one help me please?
  • This one is well beyond what I know. Can you help me? (80)?
  • This reaction p+p____禄2 up and 1 H + e up + +v down e+energy?
  • Thorite contains 71.6% Th, 8.7% Si and 19.7% O. What is the empirical formula?
  • Thre is three barrels of water, 1 ba contains 5l water, second contains 3l, i want exactly 4l water in big ba?
  • Three characteristics of acids?
  • Three characteristics of bases?
  • Three chemistry questions?
  • Three Colligative Properties Problems: HELP!!!?
  • Three easy questions on chemistry! you dont have to answer all i just need help!?
  • Title, Vol, Year, page no. of the articles that first intro and explain Langmuir and Freudlich models?
  • Titrating 25.00mL of a hydrochloric acid solution requires 42.00mL of a 0.200 M NaOH solution.?
  • Titration - Hard Calculation?
  • Titration and such?
  • Titration Calculation.to Moles?
  • Titration Calculations?
  • Titration chem problem?
  • Titration help!!!?
  • Titration Help!!?
  • Titration of diprotic acids?
  • Titration problem!?
  • Titration Q#2?
  • Titration Q?
  • Titration question?
  • To be effective a collision requires...?
  • To calculate the P /T quotients and the P X T products for an experiment that used temperature and pressure,?
  • To calculate the pH of a solution whose [OH-] is known, one must first calculate?
  • To change the volume of a gas at constant temp from 3 L to 5 L itd be necessary to cahnge from 131.3 kPa to __
  • To find temperature using millimeters of Hg?
  • To help prevent tooth decay, many communities treat their water supply with a fluoride compound such as CaF(2)
  • To how many other atoms is each carbon atom bonded in ethane?
  • To hydrate propylen oxide, does that just involve adding water? If yes, is what quantities.?
  • To i determine electronegativity on the difference of the electronegativity or.?
  • To make the following products, select the reactants and describe the experimental conditions needed?
  • To maximize the E2 product what base makes the product shown? (CH3)2CHCH2CH2CH2BR+base TO (CH3)2CHCH2CH=CH2?
  • To maximize the E2 product what base makes the product shown? (CH3)2CHCH2CH2CH2BR+base-->(CH3)2CHCH2CH=CH2?
  • To solve problems using Avogadro's Law, which mathmatical equation should be used?
  • To the Technical People only"what kind metal is suitable for heat collectors is it aluminum or brass or both?
  • To wat temp must a 3000ml volume of gas sample in a baloon at 0 degrees C be heated to have a volume of 6000ml
  • To what Celsius temperature must 17.0 mL of methane gas at 16.0掳C be changed so the volume will be 78.5 mL?
  • To what extent are scientists responsible for their discoveries?
  • TO which class of chemical componunds does methyl alcohol belong?
  • Toothpaste chemical + physical changes?
  • Topless cake dancer,I need help making cloud of smoke,what chemicals?
  • Total chlorine very low, free chlorine very high. How to fix?
  • Total dietary fibre??
  • Total numbers of moles of electrons?!?
  • Tough Chemistry Problem- Solutions?
  • Tough chemistry problem!?
  • Toxicologist , chemist - Dangerous jobs?
  • Transition elements?
  • Transition metals used in wastewater treatment?
  • Transition metals??
  • Transitions in a hydrogen atom..?
  • Transmutations?
  • Triatomic molecules to be linear?
  • Trickey chemistry questions need help?
  • Tris=conj. base. pKa TrisH+=8.1, mw=121. calculate mass of Tris req'd to make 3L of 0.06M buffer?
  • True of false, an empirical formula can never be the same as a molecular formula?
  • True of Faluse?
  • True or False - A diatomic molecule contains two atoms?
  • True or false questions in general chemistry??
  • True or False..For Science?
  • True or false: The number of neutrons in the nucleus of an atom, gives it a unique chemical nature?
  • True or False?
  • True or False?
  • Trying to find density?
  • TUMS Antacid Chemical Equations?
  • Two atoms with identical electronegativities share an electron. What kind of bond is formed and will either at
  • Two balance the (redox) equation chemistry problems?


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