34 B Converting Among Molar Mass Moles Mass and Number of Pa

3.4 B Converting Among Molar Mass, Moles, Mass, and Number of Particles How many g are there in 3.82 x 107 moles of pyrolgallol, C6H60? The key problem-solving question: Where are we going? What do we know? Strategy

Solution

Molar mass of C6H6O => 6x12 + 6x1 + 1x16 => 94 g/mol

3.82 x 10^-7 mol x 94 g/mol => 3.59 x 10^-6 g

1 g = 10⁶ µg

or 1 µg = 10^-6 g

So 3.59 x 10^-6 g => 3.59 µg