The correct order of total number of atoms present in

Question

(A) 2 moles of cyclohexane

(B) 684 g of sucrose

(C) 90.8 L of dihydrogen at STP

is: [2026]

Smart Achievers · Accepted Answer

(4)

$(A) 2 mol cyclohexane$ $(C_{6} H_{12})$ $molecules$

$=$ $2 \times (6 + 12)$ $mol atoms = 36 mol atoms$

$(B) 684 g sucrose (C_{12} H_{22} O_{11}) = (\frac{684}{342}) mol sucrose molecules$

$= (\frac{684}{342}) \times (12 + 22 + 11) mol atoms = 90 mol atoms$

$(C) H_{2} molecules in 90.8 {L H}_{2} at STP$

$= \frac{90.8}{22.7} mol H_{2} molecules$

$= \frac{90.8}{22.7} \times 2 mol H atoms = 8 mol H atoms.$

$Correct order of number of atoms = B > A > C$

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