In which two ways does a balanced chemical equation model the law of conservation mass?

Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?

The solid that is formed and usually sinks to the bottom of a solution is the