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Draw a Diagram to compute the molar mass that would be obtained from the actual experimental data under the subsequent conditions. The unknown is methyl propyl ether CH3OC3H7 which has a vapor pressure of 375.2torr at room temperature 20C. If the volume of the flask is 135 ml the temperature of the bath is 100C also atmospheric pressure is 760torr. If the average molar mass of air is 29.0 g/mol.
Describe the effects of a catalyst on a reaction; (what is changed what is not), include a rough sketch showing the reaction profile for an uncatalyzed reaction and a catalyzed reaction
The shielding of electrons gives rise to an effective nuclear charge,Zeff, which explains why boron is larger than oxygen. Estimate the approximate Zeff felt by a valence electron of boron and oxygen, respectively
suppose a student comes to lab unprepared and has not written the appropriate physical data for the solvents to be used
write the balanced net ionic equation for the reaction that occurs when 0.1 m solutions of copperii sulfate and calcium
Consider the peptides Gly-Pro-Ser-Glu-Thr (open chain) and Gly-Pro-Ser-Glu-Thr with a peptide bond linking the Thr and the Gly. Are these peptides chemically the same. Why or Why Not
Assume that the ?Ho and ?So of vaporization do not change significantly with temperature. Calculate the vapor pressure of CH3OH at 70 oC (in atm).
Determine the time (in hours) required to recharge a Ni-Cd battery by converting 2.43 g Cd(OH)2 back to Cd using a charger that supplies 125 mA of current.
When CuCl2 is heated to 100C, the compound is dehydrated. If 0.235g of CuCl2 * x H20 yields 0.185 g CuCl2 on heating, what is the exact formula of the hydrate
Calculate the freezing point of a 0.2 m CaCl2 aqueous solution, assuming it dissociates completely to form ions in solution
1. partition functions for particle in the boxconsider the he atom again with the three wave functions that you do not
During a molar volume of oxygen experiment indicate how each of the following errors would affect (increase, decrease, or no change) your calculated value for the molar volume of O2 at STP.
a bottle containing 315 g of cleaning solution is used for carpets. if the cleaning solution has a specific gravity of
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