PLEASE HELP ASAP! 2 grams of potassium (K) reacts with 5 grams of Oxygen (O). According to the Law of Conservation of Mass, how many grams of potassium oxide (K2O) will be produced?
O 10 grams
O 7 grams*
O 2 grams
O 5 grams
I think it is 7, however could someone confirm please?
