1.calculate the end velocity of a rocket that traveled 16km in 2 seconds.
distance
time
2.calculate the rockets acceleration m with a start velocity of 0m/s and the end velocity from #1 for 10 seconds.
(final velocity- start velocity)
time
* be sure to include units!

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.

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.