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28 December, 12:26

The molar mass of glucose is 180.18 grams per mole. Which of the following is the molecular formula of glucose?

CHO

C3H4O3

C6H12O6

C12H24O12

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Answers (2)
  1. 28 December, 12:28
    0
    C6H12O6 6 carbon 12 hydrogen 6 oxygen
  2. 28 December, 12:34
    0
    Answer: C) C6H12O6

    Explanation: The molar mass is the mass of a given substance (chemical element or chemical compound (in grams.) divided by its amount of substance (in mole). To determine which of the given options is the molecular formula of glucose, we need to calculate the molar mass of each one of them, and compare them with the given value (180.18 grams per mole):

    molar mass of the elements:

    C=12

    H=1

    O=16

    A) mCHO=12+1+16=29 g/mol

    B) mC3H4O3=12*3+1*4+16*3=88g/mol

    C) mC6H12O6=12*6+1*12+16*6=180g/mol

    D) mC12H24O12=12*12+1*24+16*12=360g/mol

    As we can see, the correct answer is option C.
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