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13 February, 23:18

At STP, a 12.0 liter sample of CH4 (g) has the same total number of molecules as

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Answers (2)
  1. 13 February, 23:35
    0
    Options Given:

    a. 6.0 L of H₂ (g) at STP

    b. 12.0 L of CO₂ (g) at STP

    c. 18.0 L of HCI (g) at STP

    d. 24.0 L of O₂ (g) at STP

    Answer:

    Option-B is the correct answer.

    Explanation:

    As we know that any gas (1 mole) at standard temperature (273 K or 0 °C) and pressure (1 atm) occupies exactly 22.4 L of volume.

    Therefore, at standard conditions 12 L of CH₄ containing 3.22 * 10²³ molecules will be equal to number of molecules (3.22 * 10²³) contained by 12 L of CO₂ as both the volumes are the same.
  2. 13 February, 23:36
    0
    There are four choices to choose from in regards with this problem and fortunately I know the answer to the said question:

    Listed below are the choices:

    a.) 6.0 L of H2 (g) at STP

    b.) 12.0 L of CO2 (g) at STP

    c.) 18.0 L of HCI (g) at STP

    d.) 24.0 L of O2 (g) at STP

    The correct answer is b. 12.0 L of CO2 (g) at STP

    Note:

    STP or (Standard Temperature and Pressure) - most commonly used when performing calculations on gases (e. g. gas density)
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