The mass of a single glucose molecule (C6H12O6, M = 180 g mol^-1) in grams is (take N_A = 6.02x10^23 mol^-1)

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JEE Main levelSingle correct optionDifficulty 2 of 3mc122

The mass of a single glucose molecule ( $C X_{6} H X_{12} O X_{6}$ , $M = 180 g mo l^{- 1}$ ) in grams is (take $N_{A} = 6.02 \times 1 0^{23} mo l^{- 1}$ )

A $1.08 \times 1 0^{26}$
B $1.66 \times 1 0^{- 24}$
C $2.99 \times 1 0^{- 22}$
D $2.99 \times 1 0^{- 25}$

Answer: C

Mass of one molecule = molar mass/

N_{A}

= 180/6.02e23 = 2.990e-22 g. The other options come from multiplying instead of dividing, or from forgetting the molar mass or the g-to-kg conversion.

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The mass of a single glucose molecule (CX6​HX12​OX6​, M=180 gmol−1) in grams is (take NA​=6.02×1023 mol−1)

Answer: C

More questions on Mole, molar mass, Avogadro number and molar volume

The mass of a single glucose molecule ( $C X_{6} H X_{12} O X_{6}$ , $M = 180 g mo l^{- 1}$ ) in grams is (take $N_{A} = 6.02 \times 1 0^{23} mo l^{- 1}$ )