Which statement correctly describes the mass of a proton? The mass of a proton is about the same as the mass of an electron.

The mass of a proton is about the same as the mass of a neutron

The mass of a proton is about double the mass of a neutron

The mass on proton is about half the mass of an electron

Acontrol during an experiment. might change remains constant does not exist does change

The diagin dilutepage 6 of 12a6a5(a)fluorine, chlorine, bromine and iodine are placed in the same group of theperiodic table.state the common name used to describe elements in this group.(i)state the group in which the elements are placed and explain whythey are placed in that group.(ii)which of the above named elements is a solid at roomtemperature and pressure?

La reaccion entre monoxido de nitrogeno (no) y oxigeno para formardioxido de nitrogeno (no2) es un paso determinante para la formacion del smog, la reaccion es la siguiente: 2no + o2 = 2no2 cual sera el numero de moles de no2 que se formaran por la reaccion completa de 8 moles de oxigeno con suficiente monoxido?