Answer to Question #69817 in General Chemistry for Sheeza A.

Question

Assume that a milliliter of water contains 20 drops. How long, in hours, will it take you to count the number of drops of water in 2.4 gal of water at a counting rate of 10 drops per second? **Write out at least 5 relevant conversion factors as fractions that you'll need to solve the problem.**

Answer 1

1 gallon = 3.785 l = 3785 ml
1 ml = 20 drops
3785 ml = 75700 drops
1 second = 10 drops
75700 drops = 7570 seconds
1 min = 60 seconds
1 hour = 60 min = 3600 seconds
7570 seconds = 126 min 10 sec = 2 h 6´10´´