What were some of the causes of the Amu Darya and Syr Darya rivers being ruined? urban sewer drainage
tannery dumping
tourism
drying up
agricultural chemicals

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?

Drug abuse will not lead to physical and psychological dependence. true or false ?

16. in a reaction that has reached equilibrium, a. the forward and reverse reactions are occurring at the same rate. b. the reactants and products are in equal concentrations. c. the forward reaction has gone further than the reverse reaction. d. there are equal numbers of atoms on both sides of the equation. e. a, b, and d are correct.