Question

If the volume of a house is 768000 cubic centimeters and the air is 0.00129 times heavier than water, what is the amount of air in the house?​

Answer 1

Answer:

CH4+2O2⟶CO2+2H2O

According to the reaction, 1 volume of CH4 needs two volumes of oxygen is required. So, 10 cm3 of CH4needs 20 cm3 of oxygen. As air contains 20% oxygen, so 100 cm3 of air is needed.

2C2H2+5O2⟶4CO2+2H2O

1 volume of C2H2 needs 2.5 volume of oxygen.  So, 10 cm3 of C2H2 needs 25 cm3 of oxygen. As air contains 20% oxygen, so 125 cm3 of air is required containing 25 cm3 of oxygen.

Step-by-step explanation:

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