21) Which statement best describes all compounds?
A)
They can be decomposed by chemical change.
B)
They can be decomposed by physical means.
C)
They contain at least three elements.
D)
They contain ionic bonds.

In a reaction (at equilibrium) that makes more moles of gas than it consumes, what is the effect of increasing the pressure?

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

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.