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The purification of hydrogen gas is possible by diffusion through a thin palladium sheet. Calculate the number of kilograms of hydrogen that pass per hour (in kg/h) through a 4.7 mm thick sheet of palladium having an area of 0.25 m2 at 500°C. Assume a diffusion coefficient of 6.0 x 10-8 m2/s, that the concentrations of hydrogen at the high- and low-pressure sides of the plate are 4.8 kg/m3 and 0.72 kg/m3, and that steady-state conditions have been attained.
An aqueous solution that contains 329 ppm of KNO3 is being used to feed plants in a graden. What volume (in mL) of this solution is need to prepare 9 L of a solution that is 23 ppm in KNO3?
Calculate the mass of Sodium and Zinc in grams in the following equations using ideal gas law - Determine the amount of Zinc metal in grams consumed in the reaction.
A 15ml aliquot of this solution was the diluted to 500ml of water. Calculate the final molarity
If you have 400mL of .5 M NH3, how many moles of .47 M HCl must be added to the ammonia solution to reach the equivalence point.
find the molar mass of the unknown. 16.6 degrees C freezing point acetic acid and 3.90 degrees C*kg/mol?
Determine the calorimeter constant or eat capacity, for this calorimeter if the specific heat for water= 4.184 J/goC.
What is the final concentration of NaOH when 335 mL of 0.75 M NaOH are mixed with 165 mL of 0.15 M NaOH?
A 391-rm mL sample of unknown rm HCl solution reacts completely with rm Na_2CO_3 to form 20.1 g rm CO_2. What was the concentration of the rm HCl solution?
Calculate what will be the amount of heat, q, absorbed by the calorimeter apparatus also express your answer in kJ? (heat capacity = 2.677 x 103 J/K)
Determine the values of q, w, and ΔE0rxn for this given chemical reaction at constant temperature and pressure?
An unknown mass of each of the following substances, initially at 22.0^circ C, absorbs 1950 J of heat. The final temperature is recorded as indicated. Find the mass of each substance. a. Pyrex glass (T_f=55.1^circ C. B.sand (T_f=62.3^circ C). C.et..
What is the percent H2SO4 for a solution consisting of 4.62 equivalencies of H2SO4 mixed with 11.2 kg of water if both portions
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