The mass of hydrogen peroxide, H₂O₂ present in the bottle placed on the shelf is 27.2 grams
How to calculate the mass of hydrogen peroxide, H₂O₂
Considering the question given, we were informed of the following:
- Mole of hydrogen peroxide, H₂O₂ present in the bottle = 0.8 mole
- Mass of hydrogen peroxide, H₂O₂ present in the bottle =?
Now, we mole and mass are related by the following formula:
Mole = mass / molar mass
Now, cross multiply
Mass = Mole × molar mass
The molar mass of hydrogen peroxide, H₂O₂ = (2 × 1) + (16 × 2) = 34 g/mol
Thus,
Mass of hydrogen peroxide, H₂O₂ present = 0.8 × 34
= 27.2 grams
Therefore, we can say that the 27.2 grams of hydrogen peroxide, H₂O₂ is present in the bottle
Complete question:
0.80 mol of hydrogen peroxide, H2O2, in a bottle of antiseptic is placed on a shelf in laboratory. What is the mass of the hydrogen peroxide, H2O2 in the bottle?