Chapter 18, Problem 130CP

Interpretation Introduction

Interpretation: The number of atoms in a 150 lb adult human needs to be determined, on the basis of given mass percent of atoms.

Concept Introduction: Stoichiometric is used to determine the moles and number of atoms in the given same. Mass percent, moles and Avogadro numbers can be used to calculate number of atoms in the substance.

1 mole = 6.022 x 10²³ atoms

  $\text{Mass percent =}\frac{\text{mass of element}}{\text{total mass}}\times 100$