Cuál es la densidad de un cuerpo que tiene una masa de 36 g y un volumen de 5 cm3? a)6.2 g/cm3
b)7.2 g/cm3
c)10 g/cm3
d)30 g/cm3

The correct answer is:   bri hope this answer was ! : )

Remember that rust prevented by placing a sacrificial electrode in electrical contact with the iron. the sacrificial electrode must be composed of a metal that  oxidizes  more easily than iron (that is, it must be below iron in table 18.1).

Each calcium ion has a charge of +2, which can also be written as ca2+. if those ions move out of the neuron and no other ions are moving, the neuron would lose the positive charge associated with those ions and become more negatively charged.

The answer is  d.  hydrogen