19. Which of the following pairs does not share the same empirical formula? (2 points) O C2H6 and C4H12
O C3H6O3 and C2H4O2
O C2H6 and CH4
O CH2O and C3H6O3

6what is the importance of water on earth? a) it keeps the top layer of the geosphere cool b) it allows life to exist c) it provides ice at the poles d) it creates earth's blue color from space

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?

what is your question? collegechemistry 5+3 pts in november 1987, a massive iceberg broke loose from the antartic ice mass and floated free in the ocean. the chunk of ice was estimated to be 98 mi long, 25 mi wide, and 750 ft thick. a typical backyard swimming pool contains about 24,000 gallons of water. how many of these pools could you fill from the water in this iceberg? (assume the iceberg is a rectangular solid of the above dimensions and consists of water only). express answer in scientific notation.