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Chemistry AS help

5.00cm3 of hydrogen peroxide bleach released 74.4cm3 of oxygen gas, measured under standard conditions. Calculate how many moles of oxygen gas were released

Reply 1

username4910484

Original post by Chungha_Soyeon

5.00cm3 of hydrogen peroxide bleach released 74.4cm3 of oxygen gas, measured under standard conditions. Calculate how many moles of oxygen gas were released

Okay I am only a gcse student but I hope I can point you in the right direction. So work out the amount of moles in the oxygen by dividing it by 24.
You divide it by 24 as this is the volume in decermeters 1 mole of gas takes up in normal conditions.
Sorry I couldn't do the actual calculations my little bro stole my calculator!

Reply 2

username5006362

Original post by glassalice

The volume of O₂ is given in cm³ and not dm³. Hence, they would need to divide the volume of O₂ by 24000 and not 24. Or simply convert the volume into dm³ first.

(edited 4 years ago)