determine the molality and mole fraction of concentrated aqueous hcl, which is 12.0 m and has a density of 1.19 g/ml

Idon't hope someone you

The answer is d- principle of faunal succession.

Ans(15) minutes;

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.