___P4 + ___O2 ⟶ ___P2O3
balance the chemical equation

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure

Answer explain why it is not possible to deduce a complete order of reactivity.