Fungal lassace, a blue protein found in wood-rotting fungi, is .390% Cu by mass. If a fungal laccase molecule contains four copper atoms, what is the molar mass of fungal laccase?

Question

Fungal lassace, a blue protein found in wood-rotting fungi, is .390% Cu by mass.  If a fungal laccase molecule contains four copper atoms, what is the molar mass of fungal laccase?

cwrw238 · Answer

mass of copper in one mole of the fungus is 4 * atomic mass of copper

this is 0.0039 * molar mass of the fungus

molar mass of fungus = ( 4 * atomic mass of copper) / 0.0039

anonymous · Answer

I got  65,179.49
I don't think that's right.

aaronq · Answer

it's not incorrect, but it is missing units.