Iron and sulfur react to yield iron sulfide. balance this reaction.

(s) + (s) → (s)

Explanation:

The unbalanced reaction of the reaction of Iron and sulfur is shown below as:-

On the left hand side,  

There is 1 iron atom and 8 sulfur atoms.

On the right hand side,  

There is 1 iron atom and 1 sulfur atom.

Thus,  

Right side, must be multiplied by 8 to balance the sulfur and,

Left side, is multiplied by 8 so to balance the whole reaction.

Thus, the balanced reaction is:-

aquifers are bounded above and below by impermeable rock. the driving force of groundwater movement in confined aquifers is pressure, rather than gravity.

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer