Chemistry & Physics. Chemistry 701: Introduction to the Mole and Molar Mass. Season 1 Episode 701 | 25m 58s. The terms mole and molar mass are introduced and used in calculations.

In a normal pregnancy, the product of conception is derived from the original genetic material, the 23 chromosomes, inside the sperm and the ovum. When these cells fuse, a zygote is formed. This ...