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A sample of hydrogen gas collected at STP occupies a volume of 31.6 L. How many moles of gas does the sample contain? answer in mol please
How much pressure is caused by 0.0201 mol of N2 and H2O in the flask under the specified conditions?
The reaction of magnesium metal with HCl yields hydrogen gas and magnesium chloride. What is the volume, in liters, of the gas formed at 736 torr and 18 oC from 4.49 g of Mg in excess HCl?
A 1.630 g sample of naphthalene, C10H8(s), is completely burned in a bomb calorimeter assembly and a temperature increase of 8.44°C is noted.
A gaseous mixture of O2 and Kr has a density of 1.114 g/L at 431 torr and 325 K.What is the mole percent O2 in the mixture.
Explain using the Michaelis-Menten model the reasonsing behind the net effect of an irreversible inhibitor on the enzyme's substrate affinity and rate of product formation?
How much energy is released when 32.4 g of water freezes? The heat of fusion for water is 6.02 kJ/mol
Its minimum angular momentum about that axis is h. In classical terms, how many revolutions per second do the H atoms make about the axis when in that state?
Calculate the change in enthalpy for the Mg-HCl reaction using standard enthalpies of formation. Delta Hf for HCl(aq)=-167.2kJ
the equivalence point occurs when 12.75 mL of 0.075M NaOH is added to a solution containing 10mL weak unknown acid and 40mL Deionized water
what is the ph of a buffer solution prepared from equal volumes of .25 m sol of a weak acid and .025 m sol of the salt of that weak acid. the acid has a pka of 4.82
What is the purpose of grinding the magnesium before introducing it into the reaction flask?
Identify the carbon atom(s) in the structure shown that has (have) each of the following hybridizations.
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