# Calculate the mass of hydrogen peroxide that you need to take to obtain oxygen weighing 37 grams.

Hydrogen peroxide is a substance with the formula H2O2. Under n.u. – liquid. Mixes well with water in any ratio. Pure hydrogen peroxide is a relatively stable compound.

Under certain conditions, hydrogen peroxide decomposes into water and atomic oxygen. This makes the peroxide highly reactive. Hydrogen peroxide exhibits both oxidizing and reducing properties.

Atomic oxygen during the decomposition of hydrogen peroxide does not exist for a long time and quickly combines in pairs, forming oxygen molecules, which are released in the form of a gas. In summary, the equation for the decomposition of hydrogen peroxide can be written in the form:

2 H2O2 = 2 H2O + O2

Molar masses of substances:

M (H2O2) = 34 g / mol

M (O2) = 32 g / mol

Let’s make a proportion according to the reaction equation:

X g of hydrogen peroxide corresponds to 37 g of oxygen, as

2 * 34 g / mol of hydrogen peroxide corresponds to 32 g / mol of oxygen.

X = (37 * 2 * 34) / 32 = 78.625 g.

Answer: 78.625 g of hydrogen peroxide.

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