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  4. Osmotic pressure of blood is 7.40 atm at 27°C. Number of mol of glucose to be used per L for an intravenous injection that is to have the same osmotic pressure as blood is:

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Q. Osmotic pressure of blood is 7.40 atm at $27^{\circ}C$. Number of mol of glucose to be used per L for an intravenous injection that is to have the same osmotic pressure as blood is:

Solutions

Solution:

$\pi=CRT$
$7.40=n\times 0.0821 \times 300$
$\pi=\frac{n}{v}RT$
$n=\frac{7.4}{0.0821 \times 300}$
$=0.3$