___Na2O (s). + ___CO2 (g) > ___Na2CO3 (s)

by cartels in other countries, shipped by air, mail, or land. i cant really see your answer choices : /

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.

let that person have a turn to speak : )