a62.45 ub6.02 X 10^23c97.9 ud133.34Do not answer this question unless you can back up your answer and you are positive it is correct.
Aluminum has an atomic mass of about 27Chlorine's atomic mass is 35.45There are 3 chlorine atoms on aluminum chloride, so multiply that by 3(3x35.45)+27 133.35 D is the correct answerI rounded so my answer is a little off.