The molar mass of an element is equal to
(a) the mass of an atom of the element in grams.
(b) the atomic mass of the element in grams.
(c) the number of atoms in a mole of the element.
(d) the number of atoms in a gram of the element.
(e) the number of electrons in an atom in grams.

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.

fe 55.85 g/mol and h2o 18.02 g/mol.