If 3.64 g of sand are separated from 5.24g of a mixture of salt and sand, how much salt should be recovered?

h let me think

electron microscopy and scanning tunneling microscopes gives us a greater understanding of atoms by being able to see the atom itself, and lets us see some atomic reactions.

explanation:

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)