The quantity of heat required to change the temperature of 1 g of a substance by 1 c is defined as

#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.

Stoichiometry- i need with 14 and 15! an explanation would be appreciated!

If a 20.0ml test tube measures 15.0cm, what is the length in meters?