21.2 g of LiCl (molar mass 42.4 g/mol) is dissolved in 78.8 g of water initially at 23 °C. The solid is stirred until completely dissolved and the temperature when dissolved is found to be 67 °C. The specific heat of the solution is 4.2 J/g°C. Determine the molar enthalpy of dissolution in kJ/mol. A. -181 kJ/mol
B. -3.92 kJ/mol
C. -9.25 kJ/mol
D. -37.0 kJ/mol

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.

warm front forms when a moist, warm air mass slides up and over a cold air mass. as the warm air mass rises, it condenses into a broad area of clouds. a warm front brings gentle rain or light snow, followed by warmer, milder weather.

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