What Is The Mass Of 4.91\Xd71021 Platinum Atoms?

What is the mass of 4.91×1021 platinum atoms?

What is the mass of 4.91 × 10^21 platinum atoms?

convert from atoms >> to number of moles by Avogadros number>> to mass by molar mass

molar mass of platinum = 195.084 g /mole

Avogadros number =6.0221409 × 10^23

mass of platinum = (4.91 × 10^21 atoms) × ( 1 mole / 6.0221409 × 10^23  atoms)

                                  × ( 195.084 g /mole)

mass of platinum = 1.593807412 g


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