A single molecule of a certain compound has a mass of 3.4x 10⁻²² g. Which value comes closest to the mass of a mole of this compound?
a) 3.4x10⁻²² g
b) 6.02x10²³ g
c) 1.8x10⁻²⁶ g
d) 5.0x10⁻¹⁵ g