nitrogen and oxygen make up 99% of the atmosphere. Trace elements make up the remaining 1%. Argon, sulfur, carbon, and water vapor are trace elements and make up what percent of the atmosphere? A. 1% B. 99%​

If a || b and e || f, what is the value of y ?

200. ml of 3.00 m nacl solution is diluted to a final volume of 500. ml. what is the molarity of the final solution?

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.