Answer:
The answer is not 9.9 i used that and got it wrong
Explanation:
So, what's your question..?. You just gave options..
The SI unit for mass is Kilogram (kg).
A) Na + H20 ----> NaOH + H2
B) 2Na + 2H20 ----> 2NaOH + H2
Follow exact same process as your other questions I have answered.