Please help, just help me please 35. Elemental phosphorus burns in oxygen with an intense flame, producing a brilliant light and clouds of the oxide product. These properties of the combustion of phosphor led to its being used in bombs and incendiary de warfare. P4(s) + 502(8) --> 2P205(s) If 4.95 g of phosphorus is burned, what mass of sy it combine with?

I'm gonna assume you want to find how much mass of oxygen 4.95g of phosphorus reacts with

P4(s) + 502(8) --> 2P205(s)

We know that Phosphorus is polyatomic and Oxygen Gas is diatomic

Atomic mass of Phosphorus= 30.97g/mol

Atomic mass for Oxygen = 16g

4 * 30.97 = 123.88g

2 * 16 = 32g

Since there are 5 moles of oxygen: 5 * 32 = 160g

Ok, so 160g of oxygen will react 123.88g of Phosphorus

4.95g phosphorus burns with how much oxygen?

4.95 * 160g

 123.88g

= 6.4g of Oxygen

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