Question

A classroom consists of 10 equivalent bench .If nitrous oxide(laughing gas)is released from 1st desk and tear gas(C6H110Br) is released from last desk.Find out the desk from 1st at which student starts laughing and weeping simultaneously .​

Answer 1

Answer:-

Let

• r1=x
• r2=10-x

We know

$\boxed{\sf \dfrac{r_{N_2O}}{r_{C_6H_11OBr}}=\sqrt{\dfrac{M_{C_6H_11OBr}}{M_{N_2O}}}}$

$\\ \sf\longmapsto \dfrac{x}{10-x}=\sqrt{\dfrac{179}{44}}$

$\\ \sf\longmapsto \dfrac{x}{10-x}=2.0169$

$\\ \sf\longmapsto x=6.68$

$\\ \sf\longmapsto x=7(Approx)$