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Presuming the same molar amounts of Al Mg and Ca were used in this experiment for which would there be more H2 gas evolution. For which would more HCl stay put in the reaction flask after the reaction?
Conclude the range of pressures that this system can exists as 2 phases By imagine Raoult's law is applied to the system
the experimental density of nickel under normal conditions of temperature and pressure is 8.908 cm^-3. Predict its crystal structure, and use the experimental density to obtain an experimentally-corrected atomic radius.
Amphetamines in urine can be confirmed by mass spectroscopy at a concentration of 500 ng/mL. Assuming a urine density of 1.025 g/mL, what is this concentration in parts per million
A solution is prepared by dissolving 3.00 g of an unknown nonelectrolyte in 20.00 g of cylcohexane (tf = 6.6 oC and kf = 20.0 oC/m). What is the molar mass of the unknown compound if the solution has a freezing point of -6.4 oC
When DMPT is treated with base, and then added to a solution of [PtCl2(K^2- dppe)], compound A forms and has the formula [PtCl(DMPT)(K^2- dppe)].
The pKa of aspirin (acetyl salicylic acid) is about 3 while the pH of stomach acid is about 1.0 Circle the approximate proportion of ionized (deprotonated and charged for acid) to unionized (protonated and uncharged for acid) aspirin that would oc..
How many ppm of Pb2 ion are contained in this solution? How many ppm of nitrate ion are contained in the same solution?
calculate how much 95 ethyl alcohol will be required to dissolve0.1g of sulfanilamide at 78 degrees celsius and using
A 8.750-gram sample of a hydrocarbon is burned in a furnace and 27.456 grams of CO2 and 11.239 grams of H2O are collected. If the molecular weight of the compound is 98.18 grams/mole, what is the molecular formula of the hydrocarbon
Identify the charged groups in the peptide illustrated below at pH 1 and pH 7. Explain what is the net charge of this peptide at these two pH values
A voltaic cell made of a Cr electrode in a solution of 1.0 M in Cr^3+ and a gold electrode in a solution that is 1.0 M in Au^3+.
Use the free energies of formation given below to calculate the equilibrium constant (K) for the following reaction at 298 K.
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