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Cobalt-60, which undergoes beta decay, has a half-life of 5.26 yr. What is the activity of the sample in Bq?
Calculate the standard enthalpy of solution of AgBr(s) in water from the enthalpies of formation of the solid and the aqueous ions
The dinitrogen oxide molecule has the atomic order NNO rather than the symmetrical NON arrangement. Suggest a possible reason.
The reversible chemical reaction A+B=C+D part b: What is the final concentration of D at equilibrium if the initial concentrations are[A] = 1.00 m and [B] = 2.00 ? Express the molar concentration numerically using two significant figures.
Assume that 500g of dry ice is placed in a cavity with a volume of 0.800 L and the ignited gunpowder heats the CO2 to 700 K. What is the final pressure in the hole?
Calculate the volume and mass required to make 0.1m solutions of your assigned acid (HNO3) and conjugate base
Why have Personal Navigation Devices become popular and what technologies are required to facilitate the success of PNDs?
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.
Why will the extraction of benzoic acid by NaHCO3 generate a greater pressure of gas in the separatory funnel than the extraction
given the following balanced equation determine the rate of reaction with respect to nocl. if the rate of cl2 loss is
A 2.04 g lead weight, initially at 10.0 Celcius, is submerged in 7.96g of water at 52.9 Celcius in an insulated container. What is the final temperature of both substances at thermal equilibrium
if 135 g of steam at 100 degrees C and 475 g of ice at 0 degrees C are combined, what is the temperature of the resultant water, assuming that no heat is lost?
What is the pH change of a 0.300 M solution of citric acid (pKa=4.77) if citrate is added to a concentration of 0.140 M with no change in volume?
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