PLEASE HURRY THIS IS TIMED How many moles are equivalent to 2.50x1020 atoms of Fe?
a. 4.15x104 mol Fe
C. 41500 mol Fe
b. 4.5x104 mol Fe
d. .00000415 mol Fe

a. 4.15x10⁻⁴moles Fe

Explanation:

1 mole of a substance is defined as 6.022x10²³ particles of this substance. That means:

1mol of electrons = 6.022x10²³electrons

1mol of atoms = 6.022x10²³atoms

1 mol of molecules = 6.022x10²³ molecules

And 1mol of atoms of Fe = 6.022x10²³ atoms of Fe

That means 2.50x10²⁰ atoms of Fe

2.50x10²⁰ atoms Fe * (1 mole of Fe / 6.022x10²³ atoms) =

4.15x10⁻⁴ moles of Fe

Right answer is:

describe matter a earth

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".