The o'keefe's have 75 gallons of cucumbers for pickling. the 1.5 m koh solution costs $3.50 per liter, 9 m h2so4 solution costs $8 per liter, and ethanol costs $20 per liter. a 50 g jar of alum from the grocery store costs $5.79. do you think it’s worth the time and trouble for richard and diane to make their own alum from discarded aluminum cans? explain your answer showing all calculations.