How many moles of h+(aq) ions are present in 750 ml of 0.65 m hydrochloric acid?


many moles of H+ ions are present in 750 ml of ss Mhydrochloric (aq) A) 0.98 mol B) 0.49 mol C) 1.2 mol D) 0.87 mol E) 0.65 mol 28) During titration, it is found that 53.5 ml. of a solution of NaoH neutralize a solution that contains 1.86 g of What is the concentration of the solution? HCl. Noc (oo) Haro (n A) 0.953 M B) 0.051 M C) 0.035 M D) 0.686 M 29 delivers Jof heat while the surroundings perform 854Jof work on it. 2) What is system? A) +421 J B) -421 J C) +2129 J D)-2129 J 1275 J 30) Complete the sentence: When heat is transferred to the system, the process is said to 30) and the sign of g is be A) exothermic, positive B) endothermic, negative C) exothermic, negative D) forbidden, indeterminate E) endothermic, positive 31) 31) An endothermic reaction causes the surroundings to A) become acidic. B) decrea release CO2 D) conden E) warm u 32) A system initially has an internal energy Uof 504J. It undergoes a process during 32 which it releases III J of heat energy to the surroundings, and does work of 222 J. hat is the final energy of the system, in J? E) 393 J C) 615 J B) 504

Answer

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