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The HCl concentration in a hyperacidic stomach is 0.03 M. The volume of liquid in the stomach is 300 mL. How many tablets of the antacid which you analyzed would have to be taken to bring the concentration of HCl in the stomach to a more normal level of 0.0003 M?
The Ka of a monoprotic weak acid is 5.16 × 10-3. What is the percent ionization of a 0.153 M solution of this acid?
Two evacuated bulbs of equal volume are connected by a tube of negligible volume. One bulb is placed in a 200K isothermal bath and the other in a 300K bath, and then 1.00 mole of an ideal gas is injected into the system. Find the final number of m..
Hydrazine (N2H4) and dinitrogen tetroxide ignite on contact to form nitrogen gas and water vapor. How many grams of nitrogen gas form when 1.00 X 102 grams of N2H4 and 2.00 X 102 grams of N2O4 are mixed
why is it important to allow the flask and contents to cool to room temperature before weighing
Give the balanced total and net ionic equations and predict whether a reaction occurs. indicate whether the reactions are precipitation reactions or acid-base reactions.
Assume you dissolve 0.235 g of the weak acid benzoic acid, C6H5CO2H, in enough water to make 1.00*10^2 102 mL of solution and then titrate the solution
What is the enthalpy for reaction 1 reversed. Reversed equation: CO2-->CO+(1/2)O2 Express answers in kJ per mole.
a gaseous mixture consists of 80.0 mole percent n2 and 20.0 mole percent 02. suppose water is saturated with the gas
household bleach is a 5 mass aqueous soln. of sodium hypochloritenaocl. what is the molality of the bleach. what is
Determine E° for the reduction half-reaction Ce4+(aq) + e- → Ce3+(aq), given that the cell voltage for the following voltaic cell is E°cell = 1.887 V:
What is the molecular formula of the compound with empirical; formula C5H8O and molar mass 336.5 g mol-1?
A 5 cm thick beef steak is being frozen in a -30 C room. The product has 73% moisture content, density of 970 kg/m^3, and a thermal conductivity (frozen) of 1.1 W/ (m K). Estimate the freezing time using Plank's equation
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