Use the average atomic masses given inside the front cover of this book to calculate the mass in grams of
each of the following samples.
a. 0.251 mole of lithium
b. 1.51 moles of aluminum
C. 8.75 X 10-2 moles of lead
d. 125 moles of chromium
e. 4.25 X 10' moles of iron
f. 0.000105 mole of magnesium

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.