According to table i, which salt releases energy as it dissolves?
(1) kno3 (3) nh4no3
(2) libr (4) nacl

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)

Which of the following are good traits of a hypothesis? it will be able to be testedit can predict an outcomeit will explain the observationsall of these

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .