Question

Define formula unit mass .Calculate the formula unit mass of NaCl, (Atomic mass of Na=23 u, Cl=35.5u )​

Answer 1

Answer:

The formula mass of a substance is the sum of the average atomic masses of each atom represented in the chemical formula and is expressed in atomic mass units. The formula mass of a covalent compound is also called the molecular mass.The mass in grams of 1 mole of substance is its molar mass.Formula unit mass of NaCl = Atomic mass of Na + atomic mass of Cl

=23u+35.5u=58.5u

Answer 2

Answer:

formula unit mass is equals to sum of the atomic mass of element and atomic number of element present in it is called formula unit mass

Explanation:

formula unit mass of NaCl =

atomic mass of NA+atomic number ofCl

23+35.5

58.5u