Question

Question #ca53b

Answer 1

Approximately `8.82*10^-3mol` or `1.72g` of platinum.

Explanation:

This is a very vague question, but I will assume you're looking for how much they weigh.

`(5.31*10^21 mol.) * (mol)/(6.023*10^23mol.) approx 8.82*10^-3 mol`

Note that mol. is referring to molecules and mol (without the period) is referring to moles.

`8.82*10^-3 mol * (195.1g)/(mol) = 1.72g`