How many atoms are in 2 mol of iron

Ineed to find the answer of this question because i dont understand it

In the space, show a correct numerical setup for calculating the number of moles of co2 present in 11 grams of co2

Which of the following is a conclusion that resulted from ernest rutherford’s scattering experiment? (will mark brainliest) a. the nucleus is negatively charged b. the atom is a dense solid and is indivisible c. the mass is conserved when atoms react chemically d. the nucleus is very small and the atom is mostly empty space