Whether your argument was for or against the immediate introduction of fuel-cell cars, check off all the topics that you included in your essay.
fuel cost and availability
vehicle cost and availability
domestic fuel sources
pollution
onboard fuel storage
fuel cell performance

DONE

How many miles of water are produced if 5.43 mol pbo2 are consumed

Ineed ! i have no clue how to do this problem.

6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.