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

Is 9 correct? and can someone me with 10? it’s due tomorrow, you

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Why do lunar and solar eclipse not happen every month