Explain how N:Z ratio can help predict the type of radiation Zr-85 and Zr-95 emit

Solubility would be your answer.

The correct answer is b) false

Idon’t know what the answer is i wish i could

The internal energy of the system we can term it as total potential energy and kinetic energy. energy flows out of the surrounding from the system then we can say that the internal energy of the final state is lower than its initials. the sign of  δesystem is negative.δesystem = efinal - einitial=-ve  efinal  ∠einitial.