Answer to Question #163770 in Chemistry for Grant

Question

How many mol of zinc correspond to 3.0 × 10² atoms of zinc? Be sure to answer all parts. Enter your answer in scientific notation.

Answer 1

Solution:

One mole of any substance contains 6.022×10²³ atoms/molecules.

Hence,

Moles of zinc = 3.0×10² atoms × (1 mol / 6.022×10²³ atoms) = 4.98×10^-22 mol = 5.0×10^-22 mol

Moles of zinc = 5.0×10^-22 mol

Answer: 5.0×10^-22 mol of zinc correspond to 3.0 × 10² atoms of zinc.