the radius of the ca atom is 0.197 nanometer; the radius of the ca2 ion is 0.099 nanometer. account for this difference.

Acompound contains c, h, and o atoms. when 1.130 g of the compound is burned in oxygen, 1.064 g co2 and 0.3631 g h2o are produced. what is the empirical formula of this compound?

Which metals are called noble metals

When microscope slides are stained to show blood cells, the small red blood cells that appear on the slides are much numerous than the large white blood cells. this supports the concept that