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A 7.58 gram sample of benzoic acid, C6H5CO2H, is dissolved in 100 ml of benzene. The density of benzene is .879 g/ml. What is the molality of the benzoic acid?
If acetic acid has a pure vapor pressure of 20 torr at 30 degrees C and acetaldehye has a pure vapor pressure of 1000 torr at 30 degrees C, a mixture of 12 moles of acetic acid
A 1.00 L solution contains 4*10^-4 M Cu(NO3)2 and 1.6*10^-3 M ethylenediamine (en). the Kf for Cu(en)2^+2 is 1*10^20. What is the concentration of Cu^+2 (aq) in this solution
Which reactant is in excess from the reaction of 35.0 g of hydrogen with 276 g of oxygen to form water
predict the standard cell potential for the process and whether or not this cell would function as diagrammed (spontaneously) Fe^0(s) + Sn^2+ (aq) -----> Fe 2+ (aq) + Sn^ 0 (s) occuring in the galvanic cell
Will a precipitate of Mg(OH)2 form when 25 mL of 0.010 M NaOH is combined with 75 mL of a 0.10M Solution of magnesium chloride
Calculate the number of grams of NaOH per 100ml to give a pH8.0 solution if pure water at pH7.0 is used in the experiment. Repeat this calculation for a pH6.0 solution using HCl.
Normalize the following wave function for a particle that can only exist between theta= 0 and pi. Then calculuate the probability of finding the particle within the range theta= pi/4 and pi/2.
Metals and nonmetals can react with each other to form ions. Complete these statements. A potassium atom gain or loses(electrons/protons/neutrons)and to form how many ion?
You dissolve a compound with a molecular mass of 284.63 in a 10-mL volumetric flask. You remove a 1.00-mL aliquot, place it in a 25-mL volumetric flask and dilute it to the mark. The absorbance of this diluted solution at 345 nm was 0.451 in a 1.0..
What information does a chemist obtain from the mass spectrum of a compound?
Consider the following specific heats: copper, 0.384 J/g.oC; lead, 0.159 J/g.oC; water, 4.18 J/g.oC; glass, 0.502 J/g.oC. If the same amount of heat is added to identical masses of each of these substances at same initial temperature
when a salt like magnesiumnitrate is dissolved in water it dissociates. if six moles of magnesium nitrate are dissolvd
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