There is a bell at the top of a tower that is 20 m high. The bell has a mass of 50 grams. (Remember g= 9.8). Calculate the Potential Energy. PE= mgh

The molality of calcium chloride (cacl2) in an aqueous solution is 2.46 m. what is mole fraction of the solute?

What is the formula of the ionic compound composed of calcium cations and chloride anions

#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.