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1 September, 21:17

dimensional analysis: a room measures 775 cm x 1400 cm x 260 cm. the density of oxygen is. 001429 g/cm^3. how many kilograms of oxygen are present in the room

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  1. 1 September, 21:20
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    The number in Kg of oxygen that are present in the room is

    403.1209 kg

    calculation

    mass=density x volume

    density = 0.001429 g / cm³

    volume = 775 cm x 1400 cm x 260 cm = 2.821 x10^8 cm³

    mass = 0.001429 g/cm³ x (2.8 x 10^8 cm³) = 403120.9 grams

    convert g to Kg

    that is 1 kg = 1000 g

    ? kg = 403120.9 g

    by cross multiplication

    =[ (403120.9 g x 1 kg) / 1000 g] = 403.1209 kg
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