If urea (aq) solution at `500K` has `O.P.=2.05` atm. `&` glucose solution at `300K` has `OP=1.23` atm. If `200mL` of `I^(st)` solution `& 400 ml` of `2^(nd)` solution are mixed at `400K` then calculate `O.P.` of resulting solution at `400K` (assume molarity is not dependent on temp.)

Explanation

To solve the problem, we will follow these steps:

### Step 1: Calculate the concentration of the urea solution at 500 K using the formula for osmotic pressure.
The formula for osmotic pressure (\( \pi \)) is given by:

\[ \pi = CRT \]
...