In nuclear physics and chemistry, the Q value for a reaction is the amount of energy absorbed or released during the nuclear reaction. The value relates to the enthalpy of a chemical reaction or the energy of radioactive decay products. It can be determined from the masses of reactants and products.
Answer:
I answered it using pictures because I dont know how else to put the answers down.
Step-by-step explanation:
first you group like terms.
-3s-s+8+1-2
-4s+7