Answer:
1, 71 g
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:
[tex]\frac{195,1 * 5,28*10^{21}}{6,022*10^{23}} =1,71 [g][/tex]
