Look at the picture of the fragmented rock.

What has most likely caused it to break up like it is?
A.
cutting with a knife
B.
physical weathering
C.
chemical weathering
D.
drilling holes with a drill

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.)

Acrystal that absorvd water from air is (blank)a. aqueousb. homogenousc. hygroscopicd. efflorescent

Which of the following is most likely true about water in chemical solutions?