Assume that a human body requires 2500 kcal of energy each day for metabolic activity and sucrose is the only source of energy, as per the equation `C

Question

Assume that a human body requires 2500 kcal of energy each day for metabolic activity and sucrose is the only source of energy, as per the equation `C

Assume that a human body requires 2500 kcal of energy each day for metabolic activity and sucrose is the only source of energy, as per the equation
`C_(12)H_(22)O_(11)(S)+12 O_(2) (g) rarr 12 cO_(2)(g) + 11 H_(2) O (l) , Delta H = -5.6xx10^(6)J`.
(Fill up the blanks)
(a) The energy requirement of the human body per day is _______ kJ.
(b) The mass of sucrose required to provide this energy is ________ g and the volume of `CO_(2)` (at STP) produced is _______ litres .

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

(a) ` 2500xx4.184 kJ = 10460` kJ ,
(b) 342 g of sucrose produces 5600 kJ of energy. To provide 10460 kJ we need `10460xx342//5600 g = 638 g`
`638 g // 342 g xx 12 xx 22.4 L = 501 L`

4 views Answered 2023-02-05 15:29