A chemist determined by measurements that 0.0750 moles of nickel participated in a chemical reaction. Calculate the mass of nickel that participated in the chemical reaction. Be sure your answer has the correct number of significant digits.

the only liquid elements at standard temperature and pressure are bromine (br) and mercury (hg). although, elements caesium (cs), rubidium (rb), francium (fr) and gallium (ga) become liquid at or just above room temperature.

explanation:

the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula

(that's what i know about formula mass)