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anastasiakonni1
31.01.2020 •
Chemistry
How many moles of oxygen will be released when 250.0 grams of kclo3 is thermally decomposed ? 2kclo3 --> 2kcl+3o2< br /> < br /> (must be made to fit into this chart)
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Ответ:
2 KClO₃ > 2 KCl + 3 O₂
2 * 122.5 g KClO₃ > 3 * 32 g O₂
250.0 g KClO₃ > ?
mass of O₂ = 250.0 * 3 * 32 / 2 * 122.5
mass of O₂ = 24000 / 245
mass of O₂ = 97.959 g
number of moles O₂ :
1 mole 32.0 g
? mole 97.959 g
moles = 97.959 * 1 / 32.0
= 97.959 / 32.0
= 3.061 moles of O₂
hope this helps!
Ответ:
pi= 3.14
3.14 + 6,909.04= 6912.18
Step-by-step explanation: