The human body contains 63% H, 25.5% O, 9.45% C, 1.35% N, 0.31% Ca and 0.22% P, plus trace elements present in smaller quantities.

• Are these mole or mass percents?
• How many grams of each element are present in a 5-kg baby?
• What is the mass of deuterium in the baby if deuterium naturally constitutes about 0.014% of all hydrogen atoms?Deuterium, a rare isotope of (Hydrogen, has 1 proton and 1 neutron and has a molar mass of 2.01 g. If Deuterium makes up 0.014% of all Hydrogen atoms, how much Deuterium is in a 5 kg baby in milligrams?)