What is the maximum mass of oxygen that can react with hydrogen of 3.50 g?

| March 19, 2021 | education

The formula for the reaction of oxygen with hydrogen will look like this: H2 + O2 = H2O. Let’s equalize the number of atoms of substances on the left and right sides of the equation: 2H2 + O2 = 2H2O. Let’s calculate the molar mass of hydrogen: 2 * 1 = 2g / mol. Knowing the mass of hydrogen and its molar mass, you can find the amount of matter: n = m / M. n hydrogen is 1.75 mol. From the reaction equation given above, it can be seen that oxygen was taken 2 times less than hydrogen, to find the amount of oxygen, you need to divide the amount of hydrogen by 2. 1.75 / 2 = 0.875 mol. The molar mass of oxygen is 32 g / mol (16 * 2). Knowing the molar mass and the amount of a substance, you can find the mass of oxygen (m = Mn). The mass of oxygen is 28 grams (32 * 0.875).



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