Samantha cools 100g of gaseous nitrogen (n2) until it becomes liquid and then cools it even more until it becomes solid. explain what happens to the energy of the molecules as the temperature is lowered.

The chemical formula for emerald is be3al2(sio3)6.an emerald can be decided as

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.

Why must humans find substitutes for many minerals found on earth? (a) form at an extremely slow rate (b) controlled by other countries (c) too deep in the earth to collect