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owua l Online teachin × + O |sjc.cengagenow.com/ilrn/takeAssig locator= ssign assignment-take Chapter 9: Mastery 7. Coffee Cup Calorimetry. Specific. pts 2req 8. Bomb Calorimetry 9. Heat of Reaction: EndothermicE pts 2req 10. AHap: Energy to Vaporize Con.. pts 2req 11. Enthalpy of 12. Heating Curves Interpret Use the References to access important values if eeded for this question. The following thermochemical equation is for the reaction of iron(s) with hydrochloric acid(aq) to form iron(II chloride(s) and hydrogen(2). 1 pts 2req Fe(s) + 2HCI(aq) FeCl2(s)" H2(g) AH =-7.40 kJ When 11.6 grams of iron(s) react with excess hydrochloric acid(aq), kJ of energy are 1 pts 2req Hint: An amount of energy is expressed as a positive number. The sign indicates whether the energy is absorbed or evolved 1 pts 2req Submit Answer Retry Entire Group 9 more group attempts remaining 14. Thermochemical Equations: W... pts 2req 1 pts 2req 1 pts 2req 17. Enthalpy of Formation Reactio..1 pts 2req 18. Enthalpy of Formation: Calculat. pts 2req 15. Hess's Law One Reaction 16. Hess's Law. Two Reactions 19. Stoichiometry 1 pis 2req Question Question Progress: 519 groups Due Nov 13 at 12:00 AM Prev Next 11:20 PM Links ^ 11/12/2017

Explanation / Answer

Molar mass of Fe = 55.85 g/mol

mass of Fe = 11.6 g

we have below equation to be used:

number of mol of Fe,

n = mass of Fe/molar mass of Fe

=(11.6 g)/(55.85 g/mol)

= 0.2077 mol

from reaction,

when 1 mol of Fe reacts, energy released = 7.40 KJ

So,

for 0.2077 mol, energy released = 7.40 * 0.2077 = 1.54 KJ

Answer: 1.54 KJ of energy are released

Feel free to comment below if you have any doubts or if this answer do not work. I will correct it and submit again if you let me know

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