al6iceBowtaagaliema al6iceBowtaagaliema

23-09-2016
Chemistry

Answered

what is the mass of 5.35×1021 platinum atoms?

Verified Answer :

HomertheGenius HomertheGenius

05-10-2016

Atomic weight of a Platinum:
195.078 u = 195.078 1.66 10^(-27) kg = 3.2382948 10^(-25) kg
m ( Pt ) = 3.2382948 10^(-25) 5.35 10^(21) =
= 1.732488 * 10^(-3) kg = 1.732448 g

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