1. How many significant digits are there in each of the following measurements? (a) 2688 cm
(b) 3.507 g
(c) 5.700 km
(d) 0.00400 kg
(e) 24.00300 m
(f) 2400 m
(g) 9.5000 x 10-8 m
(h) 0.0020056 g

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.