JEE Mains · Chemistry · STD 11 - 5. Thermodynamics and thermochemistry
An average person needs about \(10000\, \mathrm{~kJ}\) energy per day. The amount of glucose (molar mass \(=180.0\, \mathrm{~g} \,\mathrm{~mol}^{-1}\) ) needed to meet this energy requirement is \(.....\,\mathrm{g}\). (Nearest integer) (Use : \(\Delta_{\mathrm{c}} \mathrm{H}(\) glucose \()=-2700\, \mathrm{~kJ}\, \mathrm{~mol}^{-1}\) )
- A \(700\)
- B \(667\)
- C \(845\)
- D \(321\)
Answer & Solution
Correct Answer
(B) \(667\)
Step-by-step Solution
Detailed explanation
\(2700\, \mathrm{~kJ}\) energy requires \(=180\, \mathrm{gm}\) \(10000\, \mathrm{~kg}\) energy requires \(=\frac{180 \times 10000}{2700} \,\mathrm{gm}\) mass of glucose \(=667\, \mathrm{gm}\)
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