An atom has an atomic mass of 27 and 13 neutrons , how many electrons will this atom have?

It will have 27 neutrons and protons because the atomic number is the same as the number of neutrons and protons.

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

the earth would become to overheated and everything alive on it will eventually die from overheating. plants will eventually die as well, water will evaporate, and it will be nothing but a hot planet without anything living on it.