Question

A single atom of platinum has a mass of 3.25 x 10^-22.What is the mass of 6.0 x 10^23 platinum atoms.

Answer 1

m = nM

Mass(Platinum) = (1mol of Platinum) x Molarmass(195.084g·mol−1)
Mass of the platinum is 195.084g I think.....

Answer 2

You can multiply the two vale together or just look up the atomic mass of platinum. 6.0 x 10^23 atoms is one mole of Pt atoms. If it's a written assignment, give your teacher both ways to get the answer.

Answer 3

All you have to do here is cross multiply :)
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