When aluminum is placed in concentrated hydrochloric acid hydrogen gas is produced. what mass?

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

The chemical formula for emerald is be3al2(sio3)6.an emerald can be decided as

Magnesium is the limiting reactant in this experiment. calculate the theoretical yield of mgo for each trial. trial 1: trial 2: data mass of empty crucible with lid trial 1: 26.688 trial 2: 26.681 mass of mg metal, crucible, and lid trial 1: 26.994 trial: 2 26.985 mass of mgo, crucible, and lid trial 1: 27.188 trial 2: 27.180