The density of a concentrated phosphoric acid solution is 1.576 g/ml solution at 20°C. It contains 138.0 g H, PO4 per 1.00E+2ml of solution​

do u have any choices to choose from ? ?

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.

i believe the answer is true.