Calculate the number of moles of iron in a sample containing `10^(22)` atoms of iron.

Calculate the number of moles of iron in a sample containing '1.0 xx 10^(22)' atoms.

Calculate the number of moles of a sample that contains 12.046 xx10^(23) atoms of iron ?

Calculate the number of moles of iodine in a sample containing 1.0 xx 10^22 molecules.

Calculate the no of moles of iodine in a sample containing 1 (10) 22 molecules.

A sample of iron has a mass of 1.68 g. Calculate (a) the number of moles of iron present, (6) the number of atoms of iron in the sample

Calculate the number of iron atoms in a piece of iron weighing 2.8g