Mole Conversions

Mole Conversions

1. Coversion from Particles Particles↔mass ( 1 moles= 6.022×10^23 particles)
a)particles →moles

b)moles→particles/molecules/formula units atoms


2.Concersions between moles↔molecules
a)moles→grams

b) grams→ mole


Harder Mole Conversions

Grams↔Moles↔Particle↔# Atom in a Practice

a)Conversions between particles to mass.

Ex.  What is the mass of 2.78×10^22 Fe atoms?

2.78×10^22 ÷1mole／6.022×10^23 molecules × 80.1g／1mole=1.1×10^-3


b)Conversions between mass to particles.

How many atoms of Iron in 20.0g of Iron?

20.0g×1mole／55.8g×6.022×10^23atoms／1 mole=2×10^23