How many moles are in 260g of al2(so3)3 x 4h20

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

#7 how does the structure of amino acids allow them to form a polypeptide? each amino acid has an amino group and a carboxyl group. each amino acid has a hydrogen atom and a carboxyl group. each amino acid has a carboxyl group and an r group. each amino acid has an r group and a hydrogen atom.

The semi-conductors on the periodic table are classified as