What’s the problem with the chemical equations shown below H2+O2= H2O

A.) there is a missing hydrogen in the reactants
B.) there is a missing oxygen in the product
C.) there is an additional oxygen in the product
D.) there is and additional hydrogen in the reactants

Although longitudinal waves can travel through all media types what is the disadvantage of this type of wave transmission? a) he efficiency of he wave transmission is greatly diminished as the media becomes less dense b) the oscillation of one set of particles has a huge impact on neighboring particles c) particles become too close together as they bump into each other making it more likely to hit other particles down the line