Enter your answer in the provided box. Compounds of boron and hydrogen are remarkable for their unusual bonding and also for their reactivity. With the more reactive halogens, for example, diborane (B,H6) forms trihalides even at low temperatures: B,H(g) + 6 Cl,(g) 2 BCI,(g) + 6 HCI(g) AH =-755.4 kJ rxn How much heat is released when 7.329 kg of diborane reacts? (Give your answer in scientific notation.) x 10 kJ

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Chapter6: Thermochemisty
Section: Chapter Questions
Problem 6.132QP
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Compounds of boron and hydrogen are remarkable for their unusual bonding and also for their
reactivity. With the more reactive halogens, for example, diborane (B,H) forms trihalides even at
low temperatures:
B,H6(g) + 6 Cl,(g)→ 2 BCI,(g) + 6 HCI(g)
AH =-755.4 kJ
rxn
How much heat is released when 7.329 kg of diborane reacts? (Give your answer in scientific
notation.)
x 10
kJ
Transcribed Image Text:Enter your answer in the provided box. Compounds of boron and hydrogen are remarkable for their unusual bonding and also for their reactivity. With the more reactive halogens, for example, diborane (B,H) forms trihalides even at low temperatures: B,H6(g) + 6 Cl,(g)→ 2 BCI,(g) + 6 HCI(g) AH =-755.4 kJ rxn How much heat is released when 7.329 kg of diborane reacts? (Give your answer in scientific notation.) x 10 kJ
Be sure to answer all parts.
Liquid hydrogen peroxide, an oxidizing agent in many rocket fuel mixtures, releases oxygen gas on
decomposition:
2 H,0,() → 2 H,0(1) + 0,(g)
=-196.1 kJ
Calculate the heat for the decomposition of 739 kg of H,O2.
x 10
kJ
(Enter your answer in scientific notation.)
Enter your answer in the provided box.
A serving of Grape-Nuts cereal (7.64 g) is burned in a bomb calorimeter with a heat capacity of 48.06
kJ/°C. During the combustion, the temperature of the water in the calorimeter increased by 2.15°C.
Calculate the energy content (in kJ/g) of Grape-Nuts.
energy content per gram =
kJ/g
Transcribed Image Text:Be sure to answer all parts. Liquid hydrogen peroxide, an oxidizing agent in many rocket fuel mixtures, releases oxygen gas on decomposition: 2 H,0,() → 2 H,0(1) + 0,(g) =-196.1 kJ Calculate the heat for the decomposition of 739 kg of H,O2. x 10 kJ (Enter your answer in scientific notation.) Enter your answer in the provided box. A serving of Grape-Nuts cereal (7.64 g) is burned in a bomb calorimeter with a heat capacity of 48.06 kJ/°C. During the combustion, the temperature of the water in the calorimeter increased by 2.15°C. Calculate the energy content (in kJ/g) of Grape-Nuts. energy content per gram = kJ/g
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