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24 December, 16:25

Hydrogen gas is explosive within the range of 4% - 75% v/v. Assuming that each student in your class produces 6 L of H2 and that the lab is not ventilated, is there danger of an explosion. Show your calculations to back up your answers.

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  1. 24 December, 16:31
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    In order to compute this, we must first take a couple of assumptions of:

    1) The laboratory size so we can calculate its volume

    2) The number of students working in the lab so we know the total gas produced

    Let the lab be

    11 m * 9 m * 6 m

    The volume then computes to be:

    594 m³

    We know that

    1 Liter is 1 dm³

    1 m = 10 dm

    1 m³ = 1000 dm³

    Therefore, the room volume in liters is:

    594,000 Liters

    Let there be 30 students in the laboratory

    Total gas being produced:

    6 * 30

    = 180 Liters

    This works out to be:

    0.03% of Hydrogen by volume

    Therefore, there is no risk of explosion given our assumption of size and students.
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