Anormal human body cell has a total of chromosomes: chromosomes come from the mother and chromosomes come from the father.

A normal human body cell has a total of 46 chromosomes: 23 chromosomes come from the mother and 23 chromosomes come from the father

All the elements are arranged by melting points on the periodic table. in row they go from metals to gasses. in the row from sodium to argon, sodium is more reactive than the one on its right, magnesium.

The molar mass of a substance is defined as the mass of 1 mol of that substance, expressed in grams per mole, and is equal to the mass of 6.022 × 10 23 atoms, molecules, or formula units of that substance.