Chemical reactionthe formation of a the formation of a helium and water ​

Hydrogen and oxygen combine to form water by the formula:

2 H2 + O2 → 2 H2O

The formation reaction of this process is:

H2 + ½ O2 → H2O

Explanation:

hope it helps me also if you can ;3

organisms are more likely to be more preserved in mud than sand because mud is moist and wet, while sand is very dry.

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"