Julius went swimming at the lake. While he was playing on the shore, he found a rock and a stick, and he threw them both in the lake. The rock sank to the
bottom, and the stick floated on top of the water. What must be true about the
stick and the rock?

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.)

The valence of aluminum is +3, and the valence of the chlorine is -1. the formula fir the aluminum chloride is correctly written as

Structure of the atoms: discovery of the nucleus in 1909i need answering all of these questions