Relative mass each element contributes to the mass as a whole is .

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules

Which organism develops breathing organism develops breathing organs from pharyngeal arches? shark, spider, sea star, sea horse