In the reaction _S +3O2 → 2SO3, what coefficient should be placed in front of the S to balance the reaction? 1

2

3

5

a graduated cylinder.

explanation:

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.

with this one i know the answer in craters one reason i looked it up and i learned about it there is my evidence