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6 July, 19:19

Determine the volume in liters occupied by 22.6 g of I2 gas at STP.

A. 1.99 L

B. 128483.71 L

C. 3.98 * 10^-3

D. 7.78 * 10^-6

(NOT B OR D)

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Answers (1)
  1. 6 July, 19:46
    0
    The volume in liters occupied by 22.6 g of I₂ gas at STP is 1.99 L (answer A)

    calculation

    Step: find the moles of I₂

    moles = mass: molar mass

    from periodic table the molar mass of I₂ is 253.8 g/mol

    moles = 22.6 g:253.8 g/mol = 0.089 moles

    Step 2:find the volume of I₂ at STP

    At STP 1 moles = 22.4 L

    0.089 moles=? L

    by cross multiplication

    ={ (0.089 moles x 22.4 L) / 1 mole} = 1.99 L
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