What is the maximum amount in moles of p2o5 that can theoretically be made from 186 g of p4 and excess oxygen?

Answer : The maximum amount in moles of is, 3 moles

Solution : Given,

Mass of = 186 g

Molar mass of = 123.88 g/mole

First we have to calculate the moles of .

Now we have to calculate the moles of .

The balanced chemical reaction will be,

From the balanced reaction, we conclude that

As, 1 mole of react to give 2 moles of

So, 1.50 moles of react to give of

Therefore, the maximum amount in moles of is, 3 moles

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.