Question

What is the mass of 1.0 x 10-3 mole of Zn? 3.9 x 1022 0.065 0.000015

Answer 1

1.0 x 10^-3 x 65.38 = 0.0654 g Zn

Answer 2

0.06538 g

Step-by-step explanation:

Moles of the element = Mass of the element/ Atomic mass of the element

Given,

Moles of Zn = 1.0 x 10⁻³ mol

Atomic mass of Zn = 65.38 amu (atomic mass unit)

Mass of Zn = moles of Zn x atomic mass of Zn = 1.0 x 10⁻³ x 65.38 = 65.38 x 10⁻³ g

Expressing 65.38 x 10⁻³as a decimal we have,

Mass of Zn = 0.06538 g