Chemistry
13.08.2020 01:09
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According to the following reaction, how many grams of hydrogen peroxide (H2O2)

According to the following reaction, how many grams of hydrogen peroxide (H2O2) are needed to form 32.0 grams of oxygen gas?
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javink18
javink18
4,7(43 marks)

The answer to your question is 34 g of H₂O₂    

Explanation:

Data

mass of H₂O₂ = ?

mass of O₂ = 32 g

Process

1.- Write the balanced chemical reaction

                   H₂O₂  ⇒   H₂  +  O₂

2.- Calculate the molar mass of H₂O₂ and O₂

Molar mass H₂O₂ = (1 x 2) + (16 x 2) = 34 g

Molar mass of O₂ = 2 x 16 = 32 g

3.- Use proportions to calculate the mass of O₂

                    34g of H₂O₂ 32g of O₂

                     x                   32g of O₂

                          x = (32 x 34) / 32

                          x = 34 g of H₂O₂                                

cinthyafleitas
cinthyafleitas
4,5(60 marks)

0.00057

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