10th grade chemistry
We're doing a lab report on the hardness of water, and one of the calculations is "The EDTA reacts with the hard water ions in a 1:1 mole ratio. Calculate the molarity of the ions present in 20 mL of water tested." How would you do this?
cars/fuel efficiency (chem)
2.Which car would you recommend for a person who travels only 5 miles to work each day? How would I figure this out? Like... something about highway mileage?