PLEASE HELP ASAP DUE IN 30 MIN ILL GIVE BRAILIEST

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

What natural processes produce large quantities of co2

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 4al(s)+3o2(g)→2al2o3(s) a) 1 molal, 1 mol o2 b) 4 molal, 2.6 mol o2 c) 16 molal, 13 mol o2 d) 7.4 molal, 6.5 mol o2