Answer :

27 moles of P4 will react with 135 moles of O2.

To determine the number of moles of P4 (phosphorus) that will react with 135 moles of O2 (oxygen), we need to examine the balanced chemical equation for the reaction between phosphorus and oxygen.

The balanced equation for the reaction is:

P4 + 5O2 -> P4O10

From the balanced equation, we can see that 1 mole of P4 reacts with 5 moles of O2 to produce 1 mole of P4O10.

Therefore, the molar ratio of P4 to O2 is 1:5.

To calculate the number of moles of P4, we can use the following proportion:

1 mole P4 / 5 moles O2 = x moles P4 / 135 moles O2

Cross-multiplying and solving for x:

x = (1 mole P4 / 5 moles O2) * 135 moles O2

= 27 moles P4

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