Repeating decimals. 1  Converting a fraction to a repeating decimal. 2  Practice: Writing fractions as repeating decimals. 3  Converting repeating decimals to fractions (part 1 of 4  2) Practice: Converting repeating decimals to fractions 5  1. Converting repeating decimals to fractions (part 2 of  2)
hydatid mole , hydatidiform mole an abnormal pregnancy characterized by placental abnormality involving swollen chorionic villi, which form a large, grapelike mass of vesicles, by trophoblastic hyperplasia, and by loss of fetal blood vessels in the villi.
Number: A mole is an amount of a substance equal to a quanity. of 602 sextillion particles (atoms, molecules, or unit cells). Written as 602,000,000,000,000,000,000,000 = 6.02 x 1023. Mass: A mole is the atomic mass (element), molecular mass. (covalent compound) or the formula mass (ionic compound) of a. substance expressed in grams. Since atoms, molecules and unit cells are extremely small, a mole is a huge number of particles but a small mass.