Question

One atom of an element weighs 3.98×10^-23.Its atomic mass is

Answer 1

Answer:

23.95

Explanation:

moles = given mass/atomic mass

1mole = given mass/atomic mass

》given mass= atomic mass----eqn1

1 mole contains avagadro atoms

weight of substance=no. of atom×weight of one atom

》6.02×10^23 ×3.98×10^-23=23.95g

by eqn1 atomic mass= 23.85g

Answer 2

Answer:

atomic mass= 24