1) expresar el resultado en gramos: a- 5 kg + 3 hg + 4 g =
b- 4 hg + 8 dg + 2 g + 5 dag =

ayuda por favor ​

answer: option (a) is the correct answer.

explanation:

the measurement of hydrogen ions in a solution is known as ph.

if ph of a solution is less than 7 then the solution is acidic. if ph of a solution is greater than 7 then the solution is basic.

when the ph of a solution equals 7, then the solution is considered as neutral.

the ph of pure water is 7, therefore, it means that concentration of hydronium ions equals that of hydroxide ions.