An element contains 25 electrons. How many empty orbitals are in its valence energy level?

The molality of calcium chloride (cacl2) in an aqueous solution is 2.46 m. what is mole fraction of the solute?

What are the advantages of using the metric system? designed as a decimal system making conversions simpler more accurate system of measurement has prefixes that correspond to an amount to use with all base units used by the entire scientific community

Use the periodic table to determine how many grams of oxygen would be required to react completely with 859.0 g c2h2