Chemistry Questions and Answers

  • If an electron and a positron collide?
  • If cyanide swallowed will thebody color turns black?
  • If force is held constant as surface area decreases, pressure does what?
  • If fresh air is so good for you why does it help to make bread go stale?
  • If HCl is a strong acid, is KCl (aq) a neutral, basic or acidic solution?
  • If humankind in somehow configured powdered water, how would people know what to add?
  • If I created chlorine gas, sulfur trioxide and sodium chloride by mixing Chlorine and Sodium Bisulfate?
  • If I have a solution of Cl, S, and OH ions then what can I add to get the ions to seperate out?
  • If I have a substance with a pH of 2, it is said to be:.?
  • If i mix 1,3-butadiene with CH2=CHCN, would I get a single compound?
  • If i need 20% NaOH?
  • If i put like tums or rolaids in water and add like a phenolpthalein,what will the results be?
  • If I react a cobalt chloride solution with KNO2 to get K3Co(NO2)6, what are my other products?
  • If i reacted 6.52g of S with O and formed 16.3g of gaseous compound. what would the emperical formula be?
  • If i use creatine supplement , could my creatinine levels in my urine increase.?
  • If I want to affect the electrophilic iodination of an aromatic ring...?
  • If identity element e in Hg, show that Hg=H?
  • If it is basic solution, it must have a pOH of?
  • If it takes 0.0777 L of oxygen gas kept in a cylinder under pressure to fill an evacuated 4.70 L reaction vess
  • If it takes 0.0777 L of oxygen gas kept in a cylinder under pressure to fill an evacuated 4.70 L reaction vess
  • If it takes 13.5 mL of .01 M EDTA to titrate 50 mL of Calcium in water, what is the ppm of Calcium?
  • If it's 86 degrees F out what is it in Celsius and Kalvin?
  • If lactose comes from the latin "milk" why soy milk does not have any lactose?
  • If Lithium Peroxide (or any peroxide) is added to water - what is resulted?
  • If metal ions in a solution are reduced, what changes would you expect to see?
  • If metal ions in a solution were reduced, what would one expect to see?
  • If methane, CH4 , a gas, is bubbled into ethanol, C2H5OH , a liquid, it is logical to expect that the gas . .?
  • If molecules are made of the same elements bu vary in 3d shapes, what other dif would u expect to find bw them
  • If nothing stick on the tefal how is made the tefal-pan??
  • If nothing sticks to Teflon pans, then how does the Teflon logo stick to the pan?
  • If one of the hydrogens bonded to the carbon atom in acetic acid is replaced by a chlorine atom?
  • If organic chemisry is about carbon compounds, is carbon dioxide organic?
  • If oxygen came from the nucleus in stars, then how did oxygen get to earth?
  • If oxygen was removed from an air sample what would happen to the pressure?
  • If pasteurization destroys vitamin C, why does orange juice show 100% vitamin C.?
  • If postassium(K) has a combining capacity of 1 and oygen(O) has a combining capacity of 2...(continued)?
  • If sulfur dioxide and oxygen can be made into sulfur trioxide what is the reverse reaction?
  • If ten (10) atomic orbitals are combined, how many molecular orbitals of a bonding and antibonding nature are?
  • If the (H+) in a solution is 1.0 * 10^-5, is the solution acidic, basic, or neutral?
  • If the density of an unknown gas is 1.55 g/L at STP, what is the molar mass of the gas?
  • If the density of an unknown gas Z is 4.50 g/L at STP, what is the molar mass of Z?
  • If the hydronium ion concentration is 1.0 x 10 ^(-5)M, is the solution acidic, neutral, or basic?
  • If the Ka of an acid is 3.5x10-5, what is the Kb of its conjugate base?
  • If the molecules in a reactant are unstable, it is likely to react slower than a more stable reactant?
  • If the Na+ concentration of a solution containing NaCl is 150, What is the NaCl concentration of the solution?
  • If the number of electrons in an atom is 35 and its mass number is 80 how many protons does it have?
  • If the orange juice is left standing for any length of time, will the acid content change? if yes/no, why?
  • If the pH is 9, what is the concentration of hydroxide ion? a) 10^-5 b) 10^-9 c) 10^3 d) 10^-14?
  • If the pH of an aqueous solution changed from 9.10 to 4.67, what happened to the hydronium ion concentration?
  • If the salt aqueous saturated solution is heated at 60 degree C what will happen and why?
  • If the salt saturated aqueous solution is heated at 60degree C what will happen and why?
  • If the solubliltiy of a gas in water is 0.82g/liter at 4 atm of presure, what is its solubility, in grams per?
  • If the temperature is 20'C, what is the corresponding temperature on the Fahrenheit scale?
  • If the volume of a container of air is reduced by 1/2?
  • If the volume of a gas conainer at 32.0C changes from 1.55L to 755mL, what will the final temp. be?
  • If the volume of a gas container at 32.0 C degrees changes from 1.55L to 755 ml, what will the final?
  • If the water reaches its boiling point of 100C.does it flactuate?
  • If two protons and two neutrons are removed from the nucleus of an oxygen atom, a nuclues of which element ...
  • If uranium-239 undergoes a beta emission and then another, what isotope is produced?
  • If volume of gas stays constant what happens to pressure when the temperature decreases?
  • If water and oil are combined in a container, the resulting liquid is?
  • If we supply additional heat to a solid in equilibrium with its liquid at the melting point, the thermal?
  • If we supply additional heat to a solid in equilibrium with its liquid at the melting point, the thermal?
  • If we supply additonal heat to a solid in euilibrium with its liquid at hte melting point, the thermal energy?
  • If you add salt to water why does the salt raise the waters boiling point?
  • If you add sodium hydroxide to an acid does it make the acid more/less soluble?
  • If you added heat to an equilibrium expression, to the reactant side, which way would the reaction go?
  • If you are familiar with negative ions?
  • If you are stung by a bee and a wasp on seprate occasions what will you put on each sting and why?
  • If you are writing a chemical equation of an exothermic reaction, is heat added to the products or reactants?
  • If you begin with 2.5 Moles of KCl03 theoretically how many grams of 03 will be produced?
  • If you begin with 4 Moles of O2 how many moles of H2O will be produced?
  • If you dissolve 500 grams of hcl in 1 liter of water, what is the morality of the acid?
  • If you have 3 mol CH4, how many grams CO do you form . CH4+O2--_CO+_H2O?
  • If you have a mixture of unknown organic and inorganic compounds, what is the best way to separate them?
  • If you inflate a balloon?
  • If you knew the air in the basketball's pressure, volume, and temperature?
  • If you melt an ionic solid, it conducts electricity because...?
  • If you mix 40.5 g of copper with 150 g nitric acid HNO3 how many liters of NO2 will be produced?
  • If you put an electric current through water, you can break it into hydrogen and oxygen gases. What is the equ
  • If you see the symbol of flask in a laboratory experiment, you are being cautioned to?
  • If you start with 20.0 grams CaCO3, how many moles of CaCO3 do you have?
  • If you started with 0.97 g of K2CrO4 and excess Pb(NO3)2, how many grams of KNO3 could be produced?
  • If you take the log of a concentration (in molarity), are the units still molarity?
  • If you wanted to make a saturated aqueous solution of NaCl,?
  • If you were a molecule which would you be?
  • If you were in a room w/ air composed 100% of oxygen would you notice it when breathing?
  • If you're REALLY good in chemistry...??
  • Iff i put sum wator in a botle and micksd it wiff sum solt, were duz da solt goe?
  • IGCSE Chemistry Multiple Choice?
  • IGCSE(cie) chemistry 2007 exam?
  • Illustration of a 7-ethyl 4,6-dimethyl 4-propyl decane?
  • I'm a new to chemistry! Is this right?
  • Im confused about the extractions of metals from their ores.?
  • I'm doing a project on plasctics and i need to draw a flowchart of how it is produced from petroleum?
  • I'm looking for a book on zirconium?
  • I'm looking to find how to prepare acetate buffer dissolved in acetonytrile?(PH=3.8-4.3)?
  • I'm needing some more help.?
  • I'm not quite sure how to balance this can anyone help me balance this?
  • I'm not sure if this balances...can anyone help me balance this?
  • I'm posting this again, can anyone help me?
  • I'm stuck, i know how to factor and all but i'm stuck on this one?
  • I'm taking chemistry this summer, is it hard?
  • I'm trying to acquire the full version of ChemOffice.?
  • I'm trying to think of a chemistry term...?
  • Imagine you are working in a lab and are given a 250ml salt solution?
  • Immiscible or miscible?
  • Importace of chemistry?
  • Importance of chemistry?
  • Importance of physical science?
  • Impossible GCSE question?
  • Improve percent yield?
  • In 4H2O the 2 is the ___, the 4 is the __, and the O represents the ___, oxygen?
  • In a covalently bonded molecule, the number of electrons that an atom shares with others is usually equal to t
  • In a hydrogen atom, an electron undergoing which of the following transitions would emit the shortest waveleng
  • In a mixture of gases, what is the total pressure of the mixture equal to?
  • In a neutralization reaction the negative ions of the salt come from what?
  • In a periodic period elements have the same (energy levels)?
  • In a redox reaction the substance that electrons is said to be .....??
  • In a solution that has [H+] = [OH-], is it a acidic, basic, or neutral solution? Or can it not be determined?
  • In a solution that has a PH=7.0?
  • In a sulfric acid solution the (H2SO4) is 0.005 M what is the pH?
  • In a titration, 32.92 mL 3.4840 M rubidium hydroxide solution is required to exactly neutralize 22.62 mL hydro
  • In a titration, 32.92 mL 3.4840 M rubidium hydroxide solution is required to exactly neutralize 22.62 mL hydro
  • In a track meet the hundred yard dash is no longer than the hundred meter dash... TRUE or FALSE? THANKS!?
  • In a voltaic cell the oxidation half reaction takes place at the anode because it has a standard electrode?
  • In Ag2CO3, the percent mass is...?
  • In an activity series, why is one metal more reactive and more likely to corrode than others?
  • In an electron-dot structure of an element, the dots are used to represent what?
  • In an exothermic reaction, an increase in temperature favors the formation of products T/F?
  • In an exothermic reaction, the energy stored in the chemical bonds of the reactants is _____?
  • In an indicator whose transition range is well above 7, ionization tends to be?
  • In an indicator whose transition range is well above 7, ionization tends to be?
  • In ancient times the element of gold was very valuable, and still is. Why is it considered so valuable today?
  • In biochemistry what is meant by the order of reaction?
  • In biochemistry: do all molecules have stereoisomers?
  • In Cannizzaro Reaction is the ratio of aldehyde to alcohol is 2:1?
  • In chemistry -explanation of the liquid drop model,thomsons atomic model and the goldfoil experiment?
  • In chemistry what is: symbolic equation, molecular formula, structural formula?
  • In Chemistry, how can you tell how many significant figures your answer should have when you multiply or add?
  • In chemistry, is it possible to have a mixture of compounds?
  • In chemistry, what are imperial formulas and what is the opposite of an imperial formula??
  • In Chemistry, What Does (g) stand for?
  • In Chemistry, What does the Ka mean?
  • In chemistry, what does the octet rule mean?
  • In chromatography why is a pencil used to mark the filtered paper instead of a pen?
  • In COD test by e dichromate mtd, write an equation to show e rxn btwn chloride and dichromate in acidic medium
  • In crude oil analysis we perform pour test.what we find out from pour point?
  • In Cystic Fibrosis a change in a single gene causes the protein called CFTR to??
  • In dehydration of alcohols,how to find whether which is the major product and which is the minor product?
  • In DTNB titrations why is it usual to have a sizeable molar excess of DTNB over thiol?
  • In each group, which is the strongest electrlyote?
  • In gas stoichiometry problems, the ________ is the bridge between moles and volume.?
  • In general?.?
  • In going from left to right in any given row in the period table, the size of atoms generally...?
  • In he reaction Cl2 (aq) + 2 I ^-1 (aq) ---> 2 CL^-1 (aq) + I2(aq)?
  • In highly concentrated solutions of acids, the acid molecules are generally _______ and the solutions are usua
  • In most general chemistry courses,...?
  • In one molecule of magnesium nitrate, Mg(NO3)2 there are:?
  • In order for a solution to be acidic?
  • In order to advance to the level of a theory, a hypothesis should be?
  • In order to raise 1 gram the degree of water by 1 degree Celsius, is the calorie value 1 calorie or 1kcalorie?
  • In organic chemistry, is it possible to substitute with an amine instead of a halogen?
  • In Patent Applications, Why Isnt IUPAC Nomenclature Used?
  • In Periodic table question?
  • In Periodic table?
  • In redox reactions...?
  • In reference to sentence structure, what is a periodic sentence?
  • In solids, what is the relationship between melting point, freezing point, and structure?
  • In some rocks the grains are badly cracked.Could you explain to me why this dating method gives the wrong?
  • In terms of particles. explain why the boiling points of the solutions are higher than the boiling point...?
  • In the Bronsted system, the OH- ion is one of the strongest bases. Write an equation to show that the CO3--?
  • In the context of organic chemistry, what do the terms saturated and unsaturated mean?Thanks.?
  • In the decay of Uranium-238 to Thorium-234, what type of radiation is being emitted?
  • In the decomposition reaction of gallium chlorate...?
  • In the Diet Coke and Mentos lab I need to come up with a conculsion based on the data I collected.?
  • In the equation CH3- + H20------- CH4 + OH- which is the strong base?equilibrium lies to the right?
  • In the Friedel-Crafts acyl cation the AlCl3 is a catalyst, why does it participate in the reaction in the same
  • In the graph, which is higher, the energy of the reactants or the energy of the products?
  • In the lab - Magnesium Oxide?
  • In the molecular level, why do cosmetics smell?
  • In the nucleus, why dont the positive protons fly apart from electrostatic repulsion?
  • In the precipitation of cadmium iodate, Cd(IO3)2, w/ch of the following salts would exert a common-ion effect?
  • In the reaction 2CO + O2 -> 2CO2, what is the ratio of moles of oxygen used to moles of CO2 produced?
  • In the reaction barium chloride + potassium chromate yields potassium chloride?
  • In the reaction barium chloride...?
  • In the reaction H^2O + H^2O > H^3O+ + OH-, ______are favored?
  • In the reaction of 1000 grams of cobalt...?
  • In the reaction of 1000grams of cobalt metal with excess potassium dichromate and sulfuric acid, the product?
  • In the reaction of nickel with concentrated nitric acid, the products are nickel (III), water and?
  • In the reaction of nickel with nonconcentrated nitric acid...?
  • In the reaction of silver nitrate with sodium chloride, how many grams of silver chloride will be produced fro
  • In the reaction: Pb + 2Ag+ -> Pb2+ + 2Ag - The Ag+ is?
  • In the self-ionization of water, two water molecules transfer an electron to produce a hydronium ion true/fals
  • In the self-ionization of water, two water molecules transfer an electron to produce a hydronium ion true/fals
  • In the world of chemistry, what is a suspensio, colloid, and the tyndall effect?
  • In thin layer chromatography, how can a colorless alkyl halide spot be visualized?
  • In this reaction you expect, in terms of dissociation, that?
  • In what different ways are leaves designed to get rid of excess water?
  • In what liquid or fluid is salt not soluble ? Also at what what tempature will salt not dissolve in water ?


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