You have 1.81 x 1024 atoms of iron (Fe). How many moles of iron do you have? 3.01 moles of Fe

0.30 moles of Fe

30 moles of Fe

10.9 moles of Fe

No is the answer to the question

The density of water is 1 g/cm cubed and in order for the pebble to sink its density has to be greater than the density of water and in order for the twig to float its density has to be less than the density of water

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).