What is the maximum amount in moles of p2o5 that can theoretically be made from 112 g of p4 and excess oxygen?

1.808 moles

Explanation:

The equation is:-  4P + 5 O2 = 2 P2O5

Number of moles = Mass of substance / Mass of one mole

Given, mass of P₄ = 112 g

Mass of one mole of P₄ = 30.97 g/mol

So, number of moles of P₄ = 112/ 30.97 = 3.616 moles

For 2 moles of  P₂O₅, the number of moles required for P₄ will be 4 moles.

∴ Number of moles of P₂O₅ = 1/2*(number of moles of P₄)

                                                =1/2 * (3.616) = 1.808 moles

So, maximum amount of moles required is 1.808 moles

altitude, density, pressure

air gets less dense the higher the altitude and also the air pressure is less as altitude rises.

i would say b

explanation:

but i think i would need more information than that