Chemistry Questions and Answers

  • How do you use heat to prove if a substance is mixture,compound or element?
  • How do you work out reactions? Is there some sort of rules?
  • How do you write 796.73 in two significant digits?
  • How do you write equations for these?
  • How does a blank work within an experiment?
  • How does a brick made of BLACK clay turn into RED?
  • How does a copper penny interfere with an alcohol breath analyzer?
  • How does a fire extinguisher works?
  • How does a nuclear power plant produce electricity?
  • How does acid react in water?
  • How does alcohol (EtOH, methanol) dehydrate tissue in culture?
  • How does antifreeze protect your radiator?
  • How does Baking Soda work? Specifically, how does it chemically remove odor?
  • How does changing enzyme concentration affect the decomposition of hydrogen peroxide?
  • How does changing the pH affect the rate of enzyme activity?
  • How Does Diet Coke and Mentos work??
  • How does e.coli,staphyllococcus bacteria effect on polymer?
  • How does estimate of absolute zero vary with gas?
  • How does fire extinguisher kills or fights fire?
  • How does Gatorade quench thirst when it is so high in sodium?
  • How does law of conservation of mass supports the idea of atoms?
  • How does Liebermann-Burchard test work?
  • How does one compute for Ksp and Kb values?
  • How does oxalic acid work on rust?
  • How does phosphorus +oxygen bond to form phosphorus (V) oxide?
  • How does spontaneous human combustion happen?
  • How does sublimation and deposition happen? Why don't they pass by the liquid phase?
  • How does SWATcash work ? what are the conditions?
  • How does the acid-base nature of the oxides of the elements in period 3 change with increasing atomic number?
  • How does the color of the Oral B blue strip change with color?
  • How does the Fire Dept. Determine what the fire danger is?
  • How does xanthoproteic test differ from heller rings test?
  • How does xanthoproteic test differ from the heller ring test?
  • How feasible is armoring for face/neck of soldiers, w/ clear "bulletproof" mask slidable from helmet?
  • How flame test data could be used in forensic science?
  • How has chemistry affected our lives?
  • How has used pcp or lsd?
  • How have silicon chips contributed to communication?
  • How have silicon chips contributed to space exploration?
  • How high can a helium balloon go ?
  • How i get on device for measuring the chemical composition of metal?
  • How important is Technical Communication in your field of work?i need an answer in 5 minutes..?
  • How is a cd manufactured?
  • How is a mmHg measured?
  • How is carbon fiber tape made? What are some use age?
  • How is EDTA used in photography?
  • How is electricity produced in only a second?
  • How is hydrogen isolated and purified?
  • How is hydrogen peroxide neutralized when used as a contact solution?
  • How is it possible to tell if we all taste things alike?
  • How is it that the structure of H20 give is the ability to dissolve so many different solutes.?
  • How is light produced without heat?
  • How is MAGNESIUM METAL used in daily life?
  • How is milk of magnesia prepared from magnesium carbonate?
  • How is radioactivity made?
  • How is sand made?
  • How is sea salt extracted from the sea?
  • How is the arrangement of atoms in a metal associated to its ductility and melleability?
  • How is the atomic mass of an element calculated from isotope data?
  • How is the chemical behavior of an atom determined by its electron configuration?
  • How is the completeness of separation of the benzoic acid crystals from teh sodium choride known with the addi
  • How is the smallest unit of time related to caesium element?
  • How is there liquid hydrogen inside Jupiter if the critical point is only 33K?
  • How long does it take for chlorine gas to dissipate?
  • How long does it take for methanol to break down?
  • How long does it take to do the following in a given day?
  • How long will it take for the outside rust to go inside the tin cans?
  • How many amino a. are there? my teacher says 21 and she is asking the name and structure of the 21st one??
  • How many atoms ...?
  • How many atoms are in 1.000 moles of H2SO4?
  • How many atoms are in 2.5 moles of the compound C3H5(NO3)3 ?
  • How many atoms are in cm^3 air?
  • How many atoms of Ag are in 0.75grams of Ag2S?
  • How many atoms of carbon are in 4.00x10^-8 grams of C3H8.?
  • How many atoms of nitrogen are present in 2.00 g of each of the following? (a) glycine, C2H5O2N?
  • How many carbon emissions has Live Earth created today?
  • How many carbon-carbon double bonds are in a saturated fatty acid. More importantly how do you find the answer
  • How many cc's in a ml?
  • How many degrees are there to 1 Kelvin?
  • How many degrees Fahrenheit is the boiling point?
  • How many degrees is boiled water?
  • How many electrons are being exchanged in the balanced redox equation:?
  • How many electrons are in a molecular orbital?
  • How many electrons are in the third principal energy level (n=3) of one atom of Fe 2, 18, 8, 14, or none?
  • How many elements are discovered to yet?
  • How many elements do you need to make a compound?
  • How many equivelants of a strong acid are required to neutralize 0.8 equivalent of a strong base?
  • How many grams in a tablespoon of water?
  • How many grams of must be added to 275 of water to produce a solution that freezes at 14.5 ?
  • How many grams of a solution that is 13.2 percent by mass AgNO3 would contain 30.0 g of AgNO3?
  • How many grams of ammonium bifluoride to add to this tank?
  • How many grams of C2H6 must be combusted to Provide 5.00x10^4 kJ of energy?
  • How many grams of dry NH4Cl need to be added to 2.40L of a 0.300M solution of ammonia,NH3..?
  • How many grams of Fe can be obtained from 276.5 g of Fe2O3?
  • How many grams of glucose are needed to prepare 400. mL of a 2.0%(m/v) glucose solution?
  • How many grams of iron can be produced from 4.50Kg Fe2O3?
  • How many grams of KCI would you need to weigh out to prepare 0.250 L of a 2.00 M KCI solution?
  • How many grams of MgCO3 contain 24.0 grams of Oxygen when the molar mass og MgCO3 is 84.3 grams?
  • How many grams of NaHCO3 are in 325 mL of a 4.50 M NaHCO3 solution?
  • How many grams of oxgen does it contain?
  • How many grams of oxygen are required to completely burn out 480 grams of magnesium?
  • How many grams of soulte are needed to prepare each of the following solutions?
  • How many grams of water is required to be mixed with 11.75 grams HgCl in order to make a 0.01 m solution?
  • How many grams of zinc nitrate will he need if he can make the zinc sulfide in 85% yield?
  • How many hydrogen atoms are in a mole of acetic acid, HC2H3O2?
  • How many joules are needed to heat 8.50 grams of ice from -10.0°C to 25.0°C ?
  • How many kg gas in one million british thermal unit?(mbtu)?
  • How many kilograms are in one teragram?
  • How many Kilograms in a Ton?
  • How many kilograms of NaCl and how many kilograms of MgSO4 are contained in 45,000 kg of this solution.?
  • How many liters are in 8.0 cubic decimeters?
  • How many liters of hydrogen (N2) are needed to produce 100 liters of ammonia (NH3) by direct combination with?
  • How many liters of oxygen (O2) are needed to convert 100 liters of hydrogen (H2) to water (H2O)?
  • How many liters of oxygen (O2) must react with sulfur dioxide (SO2) to produce 50 liters of sulfur trioxide (S
  • How many liters of oxygen are needed to make 240 L of steam? H2 + O2>> H20?
  • How many matches are in a normal matchbox?
  • How many mg are there in 100% Vatimin C?
  • How many mg does it take to make a gram.?
  • How many mg of NaHCO3 are in a 500-mg tablet if 40.00 mL of 0.120 M HCl is required to neutralize the sample?
  • How many mg of NaHCO3 are in a 500-mg tablet if...?
  • How many milligrams of caffiene equal one milligram of nicotine?
  • How many milliliters of 2.00 M NaOH solution will provide 20.0 g NaOH?
  • How many milliliters of a 25% (m/v) NaOH solution would contain 75 g of NaOH?
  • How many millilites of 0.4000M NaOH are required to completely neutralize 20.0 ml of 0.200M HCI?
  • How many millilitres in one drop?
  • How many millimoles of solid sodium acetate will you need to add to this solution?
  • How many ml of 0.1N NaOH must be added to 20ml of 0.1M H3PO4 (pKa=6.7) to make pH 7.4 buffer?
  • How many mL of 1.2M potassium superoxide (KO2) are consumed in a reaction with water and...?
  • How many mL of 1.2M potassium superoxide (KO2) are consumed in a reaction with water...?
  • How many mL of isopropyl alcohol are in a 1 pint (473mL) container?
  • How many mol of HCI are present in 750 mL of a 6.0 M HCI solution?
  • How many molecules are in a mole of ammonia NH3?
  • How many molecules of H2O are in 100kg of snow???
  • How many molecules of N2 are in a 500.0 mL container at 780 mm Hg and 135 degrees C?
  • How many molecules of water (MW = 18 g/mol) are produced from 125 grams of aluminum metal (MW = 27 g/mol)?
  • How many moles of air are there in a 125 mL flask if the pressure is 739 torr and the temperature is 18 C?
  • How many moles of air are there in a 125 mL flask if the pressure is 739 torr and the temperature is 18°C?
  • How many moles of air are there in a 125 mL flask if the pressure is 739 torr and the temperature is 18°C?
  • How many moles of aspartame (c14h18n2o5) are found in 40. mg. of aspartame?
  • How many moles of each type of atom are in 2.55 mol of grain alcohol (C2H6O)?
  • How many moles of H20 can be produced from 4 moles of H2?
  • How many moles of H3O+ must be added to 349 mL of a solution to adjust the pH from 7.40 to 5.33? Use E notatio
  • How many moles of hydrogen/nitrogen are formed?
  • How many moles of Mg are needed to react with 16g of O2?
  • How many moles of molecules and atoms are in a 3.2 g sample of CH4?
  • How many moles of NaCI are present in 575 mL of a 2.00 M NaCI solution?
  • How many moles of NaOH are needed to prepare 2.00 L of a 0.250 M NaOH Solution?
  • How many moles of phsophorus, oxygen and calcium atoms are contained in 1/2 a mole of Ca3(PO4)2?
  • How many moles of sugar are in one piece of bubble gum?
  • How many monochloro and monobromo isomers are there with 3-ethyl-4-methylhexane?
  • How many nanometers are in 6.50 times 10^2 terameter?
  • How many neutrons and protons does the isotope lead-208 contain?
  • How many of the elements are naturally occurring?
  • How many organisms per mL in source?
  • How many oxygen atoms are there in 25.0 g of Na3PO4?
  • How many picograms are in one microgram?
  • How many protons are found in an OH- (hydroxide) ion? HELP!!?
  • How many stereocenters are there in coniine?
  • How many structual isomers can be drawn for pentane?
  • How many teaspoons make a millilitre?
  • How many unpaired electrons are there for Cr?
  • How many valence electrons does carbon have?
  • How much butane is present as a liquid?
  • How much can you concetrate a substance?/?
  • How much does 500 mL of mercury weigh?
  • How much does a forensic scientist make?
  • How much does a litre helium cost and how much can a litre helium lift?
  • How much energy is needed to transform double carbon bonds into CH2 bonds?
  • How much fluid will you need to reconstitute with Mefoxin 1.75 grams?
  • How much glucose is in this solution? 423 mL of a 3.5 molar solution of Fructose?
  • How much harder is Organic Chemistry 2 then 1?
  • How much heat is produced by burning one A4 size paper?
  • How much is a milligram?how many milligrams does it take to get a GRAM?
  • How much K3PO4 would you need to mix the following solution: 1400 mL of a 0.1M solution of K3PO4?
  • How much of each reactant (in grams) is consumed in the given reaction?
  • How much pressure is 2.2 atmospheres in in hg?
  • How much remains?
  • How much remains?
  • How much sodium sodium chloride (salt) does it take to saturate 2 cups of water?
  • How much water should be added to a 50ml of 25% acid solution to dilute it to a 10% acid solution?
  • How nanotechnology is incoporated into LCD and OLED?
  • How should i prepare 1 N NaOH??
  • How should I prepare for Organic Chemistry?
  • How the exothermic and endothermic reaction is produced? when?
  • How the gasoline impurities lower the performance?
  • How to analyze volatile organic compounds in food wrapper?
  • How to Balance Ammonium hydrogen carbonate into ammonia gas, water vapour, and carbon dioxide?
  • How to balance the following reactions by simple inspection method?
  • How to balance the following reactions by simple inspection method?
  • How to balance this equation?
  • How to calculate freezing point of solution?
  • How to calculate partial molar volume from mole fraction of a mixture and its density ?
  • How to calculate pH value?
  • How to Calculate pH, concentration of H+ or OH-?
  • How to calculate the molality?
  • How to calculate the percentage of acetic acid of vinegar?
  • How to calculate the percentage of oxygen in the compound (C8H9O2N)?
  • How to calculate the volume required to make a 20 millimolar solution.?
  • How to carry up the basic experiment of properties acid?
  • How to convert it to mol?


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