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Compute the freezing point and boiling point of an anti freeze solution that is 50% by mass of ethylene glycol (HOCH2CH2OH) in water. Ethylene glycol is anonelectrolyte
how many molecules of carbon dioxide are produced when 145 molecules of acetylene hcch to react in excess oxygen
Using the standard entropy values: NO(g), S° = +210.6 J mol-1 K-1 O2(g), S° = +205.0 J mol-1 K-1 NO2(g), S° = +240.5 J mol-1 K-1 calculate the standard entropy change
In the following reactions identify the elements oxidized and elements reduced: • 3Ag + 4HNO3 .............> 3AgNO3 + NO +2H2O • 6Fe2+ + Cr2O72- + 14H+ .......>
demonstrating the low melting point of gallium metal 29.8degc an instructor removes a 1.00 kg sample of the metal from
what differences would you expect to observe. Would the order of reaction change with respect to the dye? Would the rate constant change
Given the following equation, how many grams of PbCO3 will dissolve when 1.5L of 1.00 M H+ is added to 6.00g of PbCO3? PbCO3(s) + 2H^+(aq) = Pb^2+(aq)+ H2O (l)+ CO2(g)
A solution of ethylene and water has a boiling point of 109.8C. What is the freezing point
solution if its conjugate acid. What is the pH of this combined solution? Always give two numbers after the decimal place
If a gas occupies 22.2L at 825mmHg and 35 degree C, what pressure will it exert at 18.2L and -11 degree C
A lactic acid/lactate ion buffer solution contains 0.44M HC3H5O3 and 0.90 M C3H5O3^-, respectively. The K a value of lactic acid is 1.4times 10^-4. Calculate the pH of this buffer.
Calculate the molality of the unknown compound (m). m=mol of solute X particles per formation / mass of solvent , kg Data given: Mass of test tube , flask, t-butyl alcohol and unknown
1. complete the following regarding the application of sound waves in medical science. awhat type of medical imaging
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