An atom has a proton number of 8 and a mass number of 15. If it has a net charge of +2, calculate the following: Atomic number
Neutron number
Electron number. Show your working .

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

frequency, z, and the collision density, z, in carbon dioxide (co2), r 180 pm at 30 °c and 120 kpa

the awnser is group 12