- Announcements- 2021 Sprin x O Microsoft Word -3- Homewc O Chem101 GBPIPY 153.074 Y -004% U x M Inbox (581) -andainecampbe x A app.101edu.co Question 2 of 21 Submit A solid 30.2 cm block of KCIO, is heated in the laboratory and decomposes according to the following reaction. What is the change in enthalpy in kJ when all the KCIO, decomposes? The density of KCIO, is 2.34 g/cm KCIO:(s) - 2 KCI(s) + 3 O:(g) AH = -89.4 kJ STARTING AMOUNT

8. From the following heats of combustion, A,H° =-726.4 kJ mol A,H° =-393.5 kJ mol CH;OH(/) + 3/202(g) → CO2(g) + 2H20(!) C(graphite) + O2(g)→ CO2(g) H2(g) + ½O2(g) → H20(!) A,H° =-285.5 kJ mol Calculate the enthalpy of formation of methanol (CH3OH) from its elements: C(graphite) + 2H2(g) +½O2(g) → CH;OH(!)

Which on the three delta H’s was the largest? Explain why.

- IrmityR Name: Enthalpy Practice #1 Consider the reaction for production of water vapor: 2H, +0, → 2H,0+572KJ / mol a. As the reaction proceeds, energy is absorbed kreleased. b. This reaction can be classified asexothermicendothermic G. The sign of the enthalpy term (AH) would be positive Knegative.)C Pacitve. @>absorbed B> exothermic #2 Consider a chemical system where the reactants have a total internal energy of 658KJ and the products have a total internal energy of 458 kJ. a. This reaction is exothermie/ endothermic. b. The value of the enthalpy of reaction is Vo ko kJ/mol. (circleor -) c. The reactants/producs are more thermodynamically stable. #3 Consider the photosynthesis reaction: 2870KJ/mol +6CO, +6H,0→C¸H„O, +60, a. This reaction isexothermi/ endothermic. b. The value the enthalpy of reaction is+/- kJ/mol. Thermochemistry-Stoichiometry SHOW WORK for credit # 4 How many moles of glucose would be produced if 6 moles of CO, and 6 moles of H,0 are reacted? mol CaH1206 #5 What…

The standard enthalpy of formation (AH°;) of C2H4(g) is +52.4 kJ/mol. What is the coefficient of H2 in the formation reaction of C2H4(g)? Enter your answer as a whole number in the answer box.

pls help out thanks chemm

Molar Masses A = 290.41 D = 250.53– 9 %3D E = 75.44 9 %3D mole mole %3D mole G = 117.05 X = 10.93 Z = 50.01 mole mole mole If 18.23 g A, according to the balanced thermochemical equation below, how much heat (in kJ) is absorbed? 5 A+6 D→ 5 Z +5G AH = 515 kJ Please input your answer to the second decimal place Type your answer...

Please calculate Ccal for both runs!

14 Write the thermochemical equation for the combustion of liquid butane (C.H10). AH C,H10 0= -147.6 CO2 ( = -393.5 H,O (s) = kJ H.C -241.8 (3)

app.101edu.co Dashboard M Gmail.com YouTube MyCollege- MyVC.. TH ! Apps 23 Consider the hypothetical thermochemical equation 3 A+B-2 C for which AH = 71.5 kJ/mol. If you have 5.30 moles of A. how much heat would be absorbed? 0 of 1 point earned 10 attempts remaining If the reaction absorbs 345 kJ of heat, how many moles of C would be produced? O of 1 point earned 10 attempts remaining What would H be for the reaction 2 C-3 A+ B? O of 1 point earned 10 attempts remaining What would H be for the reaction 9 A+38-607 0 of 1 point earned 10 attempa remainng Which one of the following reactions would have an enthalpy change of-2×AH? Here AH refers to the enthalpy change of the original reaction. e O of 1 point earned Type here to search C O