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MMLU-Pro / 4170 / A sample of the sugar D-ribose of mass 0.727 mathrm{~g} was placed in a…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

A sample of the sugar D-ribose of mass $0.727 \mathrm{~g}$ was placed in a calorimeter and then ignited in the presence of excess oxygen. The temperature rose by $0.910 \mathrm{~K}$. In a separate experiment in the same calorimeter, the combustion of $0.825 \mathrm{~g}$ of benzoic acid, for which the internal energy of combustion is $-3251 \mathrm{~kJ} \mathrm{~mol}^{-1}$, gave a temperature rise of $1.940 \mathrm{~K}$. Calculate the enthalpy of formation of D-ribose.
Plain-text mathematical notation (without MathML)
A sample of the sugar D-ribose of mass $0.727 \mathrm{~g}$ was placed in a calorimeter and then ignited in the presence of excess oxygen. The temperature rose by $0.910 \mathrm{~K}$. In a separate experiment in the same calorimeter, the combustion of $0.825 \mathrm{~g}$ of benzoic acid, for which the internal energy of combustion is $-3251 \mathrm{~kJ} \mathrm{~mol}^{-1}$, gave a temperature rise of $1.940 \mathrm{~K}$. Calculate the enthalpy of formation of D-ribose.
Original LaTeX notation
A sample of the sugar D-ribose of mass $0.727 \mathrm{~g}$ was placed in a calorimeter and then ignited in the presence of excess oxygen. The temperature rose by $0.910 \mathrm{~K}$. In a separate experiment in the same calorimeter, the combustion of $0.825 \mathrm{~g}$ of benzoic acid, for which the internal energy of combustion is $-3251 \mathrm{~kJ} \mathrm{~mol}^{-1}$, gave a temperature rise of $1.940 \mathrm{~K}$. Calculate the enthalpy of formation of D-ribose.

category

chemistry

options

  1. -1210 $\mathrm{~kJ} \mathrm{~mol}^{-1}$
  2. -1130 $\mathrm{~kJ} \mathrm{~mol}^{-1}$
  3. -1285 $\mathrm{~kJ} \mathrm{~mol}^{-1}$
  4. -1270 $\mathrm{~kJ} \mathrm{~mol}^{-1}$
  5. -1150 $\mathrm{~kJ} \mathrm{~mol}^{-1}$
  6. -1450 $\mathrm{~kJ} \mathrm{~mol}^{-1}$
  7. -1200 $\mathrm{~kJ} \mathrm{~mol}^{-1}$
  8. -1500 $\mathrm{~kJ} \mathrm{~mol}^{-1}$
  9. -1340 $\mathrm{~kJ} \mathrm{~mol}^{-1}$
  10. -1380 $\mathrm{~kJ} \mathrm{~mol}^{-1}$

src

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Source and history

upstream_id / Original problem ID
4170
task_id
66d5a359-3167-517e-8909-1a43d09f1add
task_key
default--test--4170
task_revision_id
1
config / split
default / test

Official source

initial import