Calculate the enthalpy change for the reaction mn3o4(s)+co(g)⟶3mno(s)+co2(g) from the following:

mn3o4(s)+4co(g)⟶3mn(s)+4co2(g) δh=255.6kj

mno(s)+co(g)⟶mn(s)+co2(g) δh=102.1kj

express your answer using one decimal place and include the appropriate units.

What is the mass of 8 moles of sodium atoms

Part b: study of equilibrium on solubility: mg(oh)2(s) ⇌ mg2+(aq) + 2 oh–(aq) cloudy clear (pink) 7. a. b. 8. a. b. 9. 10. 11. 12. when adding concentrated hydrochloric acid, how did the appearance of the equilibrium mixture change? the change in appearance indicated a shift in the point of equilibrium. in which direction did the equilibrium shift? (l) left (r) right explain your answer to question 7a. you should indicate which ion was added to or removed from the equilibrium mixture. when adding edta, how did the appearance of the equilibrium mixture change? the change in appearance indicated a shift in the point of equilibrium. in which direction did the equilibrium shift? (l) left (r) right explain your answer to question 8a. you should indicate which ion was added to or removed from the equilibrium mixture. upon heating in which direction is the equilibrium shifting? upon cooling in which direction is the equilibrium shifting? is the forward reaction a. endothermic explain your answers to questions 9, 10, and 11. (l) left (r) right (l) left (r) right b. exothermic

In salt water solution,the salt is the blank