How many moles of Al are necessary to form 28.2 g of AlBr₃ from this reaction: 2 Al(s) + 3 Br₂(l) → 2 AlBr₃(s) ?

All of the following are part of the biosphere except

According to the diagram, what sources contribute to the phosphorus found in soil? according to the diagram, phosphorus found in soil contributes phosphorus to what other sources?

What is the number of neutrons in an atom with atomic mass of 35