(PExercises: Molecules and Comp X PExercises: ThermochemistryFilesX(218) Enthan.com/eplayer/book/2E5IYU4ZQG2/page/adf65754b38ca13018768451b8d38a08c17019f2b?platforms.id-mastering&b=2E5Exercises: ThermochemistryIf a bottle of nail polish remover contains 177 mL of acetone, how much heat is releasby its complete combustion? The density of acetone is 0.788 g/mL.MISSED THIS? Read Section 7.6; Watch IWE 7.7D60.What mass of natural gas (CH) must burn to emit 267 kJ of heatCH4(g) +2 O2(g)CO2(g) + 2 H2O(g)AH 802.3 kJNitromethane (CH3NO2) burns in air to produce significant amounts of heat.61.2 CH3NO2 (1) 3/2 O2 (g)2 CO2 (g) +3 H20(1) + N2(g)AH-1418 kJIXnHow much heat is produced by the complete reaction of 5.56 kg of nitromethane?MISSED THIS? Read Section 7.6Watch IWE 7.762.Titanium reacts with iodine to form titanium(III) iodide, emitting heat.839 kJ2 Ti(s) +3 I2 (g)2 Til3 (s) AHflcIXnIs it TiDon'trDetermine the masses of titanium and iodine that react if 1.55 x 10 kJ of heatby the reaction.InvestThe propane fuel (C3H3) used in gas barbeques burns according to the thermo63.CLICKequation:

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Asked Nov 21, 2019
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Looking at #61. I got the correct answer of 6.46x10^4, but I don't understand why the solution is positive instead of negative.

(PExercises: Molecules and Comp X PExercises: Thermochemistry
Files
X
(218) Entha
n.com/eplayer/book/2E5IYU4ZQG2/page/adf65754b38ca13018768451b8d38a08c17019f2b?platforms.id-mastering&b=2E5
Exercises: Thermochemistry
If a bottle of nail polish remover contains 177 mL of acetone, how much heat is releas
by its complete combustion? The density of acetone is 0.788 g/mL.
MISSED THIS? Read Section 7.6; Watch IWE 7.7D
60.
What mass of natural gas (CH) must burn to emit 267 kJ of heat
CH4(g) +2 O2(g)
CO2(g) + 2 H2O(g)
AH 802.3 kJ
Nitromethane (CH3NO2) burns in air to produce significant amounts of heat.
61.
2 CH3NO2 (1) 3/2 O2 (g)2 CO2 (g) +3 H20(1) + N2(g)
AH
-1418 kJ
IXn
How much heat is produced by the complete reaction of 5.56 kg of nitromethane?
MISSED THIS? Read Section 7.6
Watch IWE 7.7
62.
Titanium reacts with iodine to form titanium(III) iodide, emitting heat.
839 kJ
2 Ti(s) +3 I2 (g)2 Til3 (s) AH
flc
IXn
Is it Ti
Don'tr
Determine the masses of titanium and iodine that react if 1.55 x 10 kJ of heat
by the reaction.
Invest
The propane fuel (C3H3) used in gas barbeques burns according to the thermo
63.
CLICK
equation:
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(PExercises: Molecules and Comp X PExercises: Thermochemistry Files X (218) Entha n.com/eplayer/book/2E5IYU4ZQG2/page/adf65754b38ca13018768451b8d38a08c17019f2b?platforms.id-mastering&b=2E5 Exercises: Thermochemistry If a bottle of nail polish remover contains 177 mL of acetone, how much heat is releas by its complete combustion? The density of acetone is 0.788 g/mL. MISSED THIS? Read Section 7.6; Watch IWE 7.7D 60. What mass of natural gas (CH) must burn to emit 267 kJ of heat CH4(g) +2 O2(g) CO2(g) + 2 H2O(g) AH 802.3 kJ Nitromethane (CH3NO2) burns in air to produce significant amounts of heat. 61. 2 CH3NO2 (1) 3/2 O2 (g)2 CO2 (g) +3 H20(1) + N2(g) AH -1418 kJ IXn How much heat is produced by the complete reaction of 5.56 kg of nitromethane? MISSED THIS? Read Section 7.6 Watch IWE 7.7 62. Titanium reacts with iodine to form titanium(III) iodide, emitting heat. 839 kJ 2 Ti(s) +3 I2 (g)2 Til3 (s) AH flc IXn Is it Ti Don'tr Determine the masses of titanium and iodine that react if 1.55 x 10 kJ of heat by the reaction. Invest The propane fuel (C3H3) used in gas barbeques burns according to the thermo 63. CLICK equation:

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Expert Answer

Step 1

The amount of nitromethane is 5560 grams

The molecular weight of nitromethane is 61.04 g/mol

 Let the moles of nitromethane in the feed is ‘x’

                               

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5560 g x 61.04 gmol 91.08 mol

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Step 2

2 moles of nitromethane produces 1480 kJ of energy.

The he...

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1418 kJ heat produced 91.08 mol X 2 = 6.46x 10 kJ

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