# Problem: How many grams of oxygen are formed when 5.30 moles of KOH are formed?4 KO(s) + 2 H2O(l) → 4 KOH(s) + O2(g) A) 21.2 g O2B) 84.8 g O2C) 170 g O2D) 5.30 g O2E) 42.4 g O2

###### FREE Expert Solution

Use stoichiometry to determine the mass of O2 produced when 5.30 moles of KOH is produced as well

Find the molar mass of O2 for the dimensional analysis

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###### Problem Details

How many grams of oxygen are formed when 5.30 moles of KOH are formed?

4 KO(s) + 2 H2O(l) → 4 KOH(s) + O2(g)

A) 21.2 g O2

B) 84.8 g O2

C) 170 g O2

D) 5.30 g O2

E) 42.4 g O2

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Stoichiometry concept. You can view video lessons to learn Stoichiometry. Or if you need more Stoichiometry practice, you can also practice Stoichiometry practice problems.

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