120. Задачка по химии №012 094

100 ml of oxygen was added to 50 ml of a mixture of two carbon oxides and set on fire. As a result of the reaction, the total volume of gases was 135 ml. Considering that all volumes of gases were measured under the same conditions, determine the volumetric composition of the initial mixture as a percentage. (Answer: 60% CO, 40% CO2)

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