Question

What is the mass of 5.28×10^21 platinum atoms

Answer 1

1, 71 g

Step-by-step explanation:

The atomic mass of platinum is 195,1 g/mol, and it has the equivalent of the avogadro's number atoms (6,022x10^23 atoms).

Doing a three rule:

195,1 g ------------ 6,022x10^23 atoms

x g ------------ 5,28x10^21 atoms

Doing the maths:

`(195,1 * 5,28*10^(21))/(6,022*10^(23)) =1,71 [g]`