Find the mass in grams of 3.01 x 1023 formula units of NaCl

During which time interval does the object travel approximately 10 meters

How many neutrons does an element have if its atomic number is 50 and its mass number is 166

#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.