\( q = 0, \, \Delta T = 0, \, w = 0 \)
\( q = 0, \, \Delta T<0, \, w \neq 0 \)
During free expansion of an ideal gas under adiabatic conditions, there is no transfer of heat, no work is done, and the temperature remains constant.
20 mL of sodium iodide solution gave 4.74 g silver iodide when treated with excess of silver nitrate solution. The molarity of the sodium iodide solution is _____ M. (Nearest Integer value) (Given : Na = 23, I = 127, Ag = 108, N = 14, O = 16 g mol$^{-1}$)