Write the reaction equation 2Н2О2 = 2Н2О + О2. Calculate the amount of the substance according to the formula m | M H2O2 340g / 34g / mol = 10 mol. We determine the amount of oxygen substance from the ratio by the reaction equation and by the condition. According to the equation, the ratio between H2O2 and O2 is 2 to 1, which means the amount of oxygen substance = 5 mol. Calculate the oxygen volume by the formula V = Vm * n (amount of substance). V (O2) = 5 mol * 22.4 L / mol = 112 L
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.