How many GRAMS of iodine are present in 1.62E+22 molecules of phosphorus triiodide?

I believe (though you may want to check this) you would be looking at 1.62 + (PI3)22, so in other words you have 22x3 iodine, which means 66. But I'm not 100% on that. I am not a chem buff, just have a hunch about this.