If it's a pH below six it's blue, if it's a pH between 6 and 7 then it would be purple, if it's above 7 it would be pink or red
The correct description that holds true for the above question would be B. Atomic number - 29 and Mass Number - 63.
The answer is definitely D
Arrhenius base is a substance that , when dissolved in an aqueous solution , increase the concentration of hydroxide (OH) ion in the solution
I hope that's help !
Answer:
heat and pressure
Explanation:
because it happens under heat and pressure.