<span>14 g N in 17 g NH3
so 35 g N will make 17*35/14 = 42.5 g</span>
I think it might be the third on not certain
Answer is A. Red and Blue
This because these are the same color of emergency lights that are used on Emergency vehicles like ambulances, police cars, fire trucks, etc. We wouldn't want normal citizens confusing drivers with police officers in case of an actual emergency.
Ill choose flowchart. Look picture for the answer
ask me if you have any doubts about my answer.