In the reaction _s+3o2→2so3 , what coefficient should be placed in front of the s to balance the reaction?

Explanation:

To balance the equation _S+3O2→2SO3, check on the right hand side where there are 2 S. That means the missing coefficient in front of the S on the left should be 2.

where is the following

explanation:

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