Consider group 5a elements: nitrogen, phosphorus, and arsenic. these elements show an increase in their atomic numbers. which element has the highest ionization energy?

What is a number added in front of a formula in order to balance the equation

If a particle has z = 25 and 23 electrons, what is its charge?

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.