MCQ
${\Psi _{310}}$ has
- ✓$1$ radial node and $1$ angular node
- B$2$ radial node and $1$ angular node
- C$1$ radial node and $2$ angular node
- D$2$ radial node and $2$ angular node
for radial node $\Rightarrow n-\ell-1$
$=3-1-1=1$
Angular node $=\ell=1$
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$A$ and $B$ respectively are:
$CH_3OH(l)+ \frac{3}{2} O_2 (g) $$\rightarrow CO_2 (g)+ 2H_2O(l)$
At $298\, K$ standard Gibb's energies of formation for $CH_3OH(l),H_2O(l)$ and $CO_2 (g)$ are $-166.2,-237.2$ and $-394.4\, kJ\,mol^{-1}$ respectively. If standard enthalpy of combustion of methonal is $-726 \,kJ\, mol^{-1},$ efficiency of the fuel cell will be .......... $\%$.