How many atoms are in 70.620 g of rhenium?

Answer 1

186.207 g of rhenium will have 6.023 x 1023 atoms.

So, 70.620 g of rhenium will have 2.284 x 1023atoms.

Answer 2

To determine the number of atoms in a given mass of an element, you need to know the molar mass of that element. The molar mass of rhenium (Re) is 186.207 g/mol. To find the number of atoms in 70.620 g of rhenium, divide the given mass by the molar mass, and then multiply by Avogadro's number (6.022 x 10^23). This gives approximately 1.590 x 10^23 atoms of rhenium.